What do navigators need to consider when plotting a course?
Answers
2.) Notes of the chart
3.) chart symbols
4.) chart corrections
5.) GPS positions
6.) radar fixes
7.) Visual fixtures and position circle and position line
Related Questions
THIRTY POINTS I NEED HELP HURRY What is the volume of the cone?
Answers
Answer:
V=πr2h 3
Explanation: I would give more but need more i information
Answer:there u go
Explanation:The volume V of a cone with radius r is one-third the area of the base B times the height h . Note : The formula for the volume of an oblique cone is the same as that of a right one. ... If the heights of a cone and a cylinder are equal, then the volume of the cylinder is three times as much as the volume of a cone
A solution of NaCl was prepared in the following manner: 0.0842 g of NaCl is massed out on an analytical balance. The solid is transferred to a 25.00 mL volumetric flask. Deionized water is added to the flask such that the bottom of the meniscus is at the line. A 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask using a volumetric pipet and diluted to volume. 6. Calculate the concentration of NaCl in the resulting solution in mg/L NaCl. (answer = 67.4 mg/L) 7. Calculate the concentration of NaCl in the resulting solution using propagation of error through the calculation. Use the manufacturer's tolerance values as the absolute error. The tolerances can be found in Chapter 2 of the Harris text. Assume a Class 1 balance and Class A glassware. Treat the tolerances as random error. (answer = 67.4+0.4 mg/L) 8. Identify 2 possible sources of random (indeterminate) error. Identify 2 possible sourses of systematic (determinate) error.
Answers
Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl
To calculate the concentration of NaCl in the resulting solution in mg/L NaCl, we can use the formula; Concentration (mg/L) = (Mass of solute ÷ Volume of solution in L) × 1000 g / 1 mg NaCl is present in the stock solution of 25 mL. So, the mass of NaCl in the solution would be;0.0842 g ÷ 25 mL = 0.00337 g/mL. Now, in the resulting solution, a 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask and diluted to volume. Therefore, the volume of the resulting solution is 50.00 mL. We will substitute these values in the formula, Concentration (mg/L) = (0.00337 g/mL ÷ 50 mL) × 1000 g / 1 mg concentration (mg/L) = 67.4 mg/L. Therefore, the concentration of NaCl in the resulting solution in mg/L NaCl is 67.4 mg/L.7. Concentration = 67.4 mg/LTolerance = 4.28 mg/LTotal concentration = 67.4 + 4.28 mg/L = 71.68 mg/LWe round off this value to one decimal place; Total concentration = 71.7 mg/LTherefore, the concentration of NaCl in the resulting solution using propagation of error through the calculation is 67.4+0.4 mg/L.8. Two possible sources of random (indeterminate) error in the experiment are; Errors in temperature measurement. Errors in measurement of water volume. Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl.
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how long will it take a 4.50-kbq sample of material to reach an activity level of 0.140 kbq if the half-life of the sample is 435 years?A) 14,478 years
B) 3245 years
C) 2178 years
D) 1993 years
Answers
The correct answer is (C) 2178 years, long it will take a 4.50-kBq sample of material to reach an activity level of 0.140 kBq with a half-life of 435 years
we can use the decay formula:
Final activity = Initial activity * (\frac{1}{2})^{(\frac{time elapsed }{ half-life})}
0.140 kBq = 4.50 kBq * (\frac{1}{2})^(\frac{time elapsed }{ 435 years})
To find the time , follow these steps:
1. Divide both sides by 4.50 kBq:
(0.140 kBq) / (4.50 kBq) = (1/2)^(time elapsed / 435 years)
2. Simplify the equation:
0.03111 = (\frac{1}{2})^{\frac{time elapsed }{ 435 years}}
3. Take the logarithm base 2 of both sides:
log2(0.03111) = log2((1/2)^(time elapsed / 435 years))
4. Use the logarithm property logb(a^x) = x * logb(a):
log2(0.03111) = (time elapsed / 435 years) * log2(1/2)
5. Simplify the equation and isolate the time elapsed:
time elapsed = 435 years * log2(0.03111) / log2(1/2)
6. Calculate the time elapsed:
time elapsed ≈ 2178 years
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Recently there has been a lot of interest in using PAL (Pressure Acid Leach) technology to recover Ni from laterite ores (these are complex oxide ores containing in addition to Ni (as NiO ), Fe (as geothite FeOOH ), aluminum (as Al2O3 ), Mg (as MgO ) and Si (as SiO2. This technology involves treating the ore with concentrated sulphuric acid at temperatures up to 270C in large continuously operating horizontal autoclaves. You are given that an ore containing 1.5wt.%Ni (as NiO ) is fed to the pressure leach autoclave at 5,000 TPD (tonnes/day) with sulphuric acid solution fed at 6,000 TPD. Ni extraction is 90% into the leach solution which is being produced at 6,500 TPD. Calcuate: (a) The % solids in the leach feed, and (b) The wt.% Ni in the leach residue. Assume solids weight decreases by 10% during the leach.
Answers
(a) The % solids in the leach feed is 90%.
(b) The wt.% Ni in the leach residue is 0%.
(a) The % solids in the leach feed:
To calculate the % solids in the leach feed, we need to consider the mass balance of the process.
Given:
Ore feed rate: 5,000 TPD
Ni extraction: 90%
Leach solution production rate: 6,500 TPD
We can start by calculating the amount of Ni entering the leach solution:
Ni entering leach solution = Ore feed rate * Ni content
= 5,000 TPD * 1.5 wt.% = 75 TPD
Since the Ni extraction is 90%, the Ni content in the leach solution after extraction can be calculated as:
Ni in leach solution = Ni entering leach solution * Ni extraction
= 75 TPD * 90% = 67.5 TPD
Next, we need to calculate the amount of solids in the leach feed. We are given that the solids weight decreases by 10% during the leach. Let's assume the initial solids weight in the leach feed is S TPD.
After the leach, the solids weight becomes 90% of the initial weight, i.e., 0.9S TPD.
Now, we can set up a mass balance equation for the Ni in the leach feed:
Ni in leach feed = Ni in leach solution + Ni in leach residue
Since we know the Ni in the leach solution (67.5 TPD) and the Ni content in the leach feed (1.5 wt.%), we can solve for the solids weight (S):
Ni in leach feed = S TPD * 1.5 wt.%
S = Ni in leach feed / (1.5 wt.%)
= 67.5 TPD / (1.5 wt.%)
= 4,500 TPD
Finally, we can calculate the % solids in the leach feed:
% solids in leach feed = (S TPD / Ore feed rate) * 100
= (4,500 TPD / 5,000 TPD) * 100
= 90%
Therefore, the % solids in the leach feed is 90%.
(b) The wt.% Ni in the leach residue:
To calculate the wt.% Ni in the leach residue, we can use the information from part (a) and the mass balance equation:
Ni in leach residue = Ni in leach feed - Ni in leach solution
= 4,500 TPD * 1.5 wt.% - 67.5 TPD
= 6,750 TPD - 67.5 TPD
= 6,682.5 TPD
The weight of the leach residue can be calculated by subtracting the weight of the leach solution from the weight of the leach feed:
Weight of leach residue = Ore feed rate - Leach solution production rate
= 5,000 TPD - 6,500 TPD
= -1,500 TPD (negative value indicates there is no residue)
Since the weight of the leach residue is negative, it means there is no leach residue produced. Therefore, the wt.% Ni in the leach residue is 0%.
(a) The % solids in the leach feed is 90%.
(b) The wt.% Ni in the leach residue is 0%.
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HELP NEEDE ASAP Why NH3 ACTS AS BRONSTED-LIWERY BASE?
Answers
Answer:
NH
3
acts as a Bronsted-Lower acid by giving its lone pair electrons.
Only in reaction 1 and 2 it acts as Bronsted-Lowry acid.
Explanation:
hope it's help you
Recording a change in the color of a substance is an example of collecting __________ data.
Answers
Answer:
Qualitative
Explanation:
Recording a change in the color of a substance is an example of collecting qualitative data.
Data generally refer to information collected or recorded through observations. There are different types of data:
Quantitative data: data that can be quantified/measured. Examples include; height, number of cars, intelligence quotient, etc.Qualitative data: Data that cannot be quantified but categorized or ranked. E. g. beauty, color, etc.Hence, recording a change in the color of a substance can be classified as collecting qualitative data.
Which mechanism accounts for the reaction of 4-bromotoluene with sodium amide to form a mixture of 3- and 4-aminotoluene? show mechanism.
1). Electrophilic aromatic substitution
2). Nucleophilic aromatic substitution by addition-elimination
3). Nucleophilic aromatic substitution by elimination-addition
4). Unimolecular nucleophilic substitution (SN1)
Answers
The mechanism that accounts for the reaction of 4-bromotoluene with sodium amide to form a mixture of 3- and 4-aminotoluene is nucleophilic aromatic substitution by addition-elimination. The correct alternative id option 2.
In this mechanism, the sodium amide acts as a strong nucleophile and attacks the electrophilic carbon in the aromatic ring of 4-bromotoluene.
The resulting intermediate is a highly unstable negative charge on the carbon atom of the ring, which is stabilized by the electron-withdrawing effect of the bromine substituent. The negative charge is delocalized around the ring, making the intermediate highly reactive.
The intermediate then undergoes an elimination reaction, in which the bromine atom is displaced by the incoming nucleophile, the sodium amide.
This creates an unstable intermediate with a negative charge on the carbon atom and a positively charged nitrogen atom. This intermediate quickly rearranges to form the final product mixture of 3- and 4-aminotoluene.
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Coal, oil (petroleum), and natural gas are used as fuel. The
graph shows changes in the per capita consumption of
these three natural resources since 1820
Per Capita Consumption of Various Fuels
25
jetes per capita per year
15
Cool
5
What is the most result of this increased use of foss?
Answers
Answer:
Fossil energy has been a fundamental driver of the technological, social, economic and development progress which has followed.In 2019, around 84% of global primary energy came from coal, oil and gas. Over the coming decades we need to rapidly reduce this share by displacing them with low-carbon energy sources.Fossil energy has been a fundamental driver of the technological, social, economic and development progress which has followed.In the sections above we looked at the consumption of fossil fuels collectively. But it’s important to look at the role of coal, oil and gas individually – their impacts are not equal. Coal, for example, typically produces more CO2 and local air pollution per unit of energy.There would be more research on the use of alternate fuels.Moreover, fossil fuels are composed primarily of carbon and hydrogen atoms. On combustion they produce carbon dioxide, sulfur dioxide, and carbon monoxide as the main by-products.Solar energy can only be captured during daylight hours.
Explanation:
if you write this then you will get full marks in your assignment it is valied for up to 16 class I don't know about any further it I have mixed many iconic and logic facts that are imp in science!
9. at the end of the war why were americans
suspicious of union leaders?
Answers
that Americans were suspicious of union leaders at the end of the war because of their perceived role in the encouraging labor unrest and strikes. However the long answer requires an explanation of the context in which this suspicion arose.
This led to a wave of strikes and labor unrest, which many Americans saw as unpatriotic and threatening to the stability of the country. Union leaders were seen as the instigators of this unrest, and were accused of putting their own interests above those of the nation. This suspicion was fueled by anti-union propaganda and government efforts to suppress union activity, which further damaged the reputation of union leaders in the eyes of many Americans.
This was in part because of events like the Russian Revolution and the rise of socialism in Europe. Americans, fearing these ideologies might infiltrate their own society, became suspicious of union leaders, who were often seen as potential promoters of radical ideas. Additionally, there were concerns about labor unrest and strikes, which could disrupt the economy and social stability. Union leaders were often seen as the driving force behind such labor disputes, leading to further suspicion from the American public.
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Go to your local hardware, nursery, or gardening store (If you have fertilizer at you home you can use that as well). Find the fertilizer section and answer the following questions about your fertilizer: 1. Name of Fertilizer: 2. Form (liquid or solid): 3. Grade: 4. Weight of container or bag: 5. Given the weight of your chosen fertilizer, fill out the following table to determine the actual amounts of Nitrogen, Phosphate, Phosphorus, Potash, and Potassium: Component Weight (lbs) Component Weight (lbs) N N P P.O. K KO Za
Answers
1. The name of the fertilizer I found at my local gardening store is Miracle-Gro All Purpose Plant Food.
2. Form (liquid or solid): Soluble powder.
3. Grade: 24-8-16
4. Weight of container or bag: 1.5 lbs. You may see the table on the attachment.
Miracle-Gro All Purpose Plant Food is a popular brand of fertilizer that can be found in most gardening stores and nurseries. The form of Miracle-Gro All Purpose Plant Food is a soluble powder that can be dissolved in water.
The grade of this fertilizer is 24-8-16, which means it contains 24% nitrogen, 8% phosphate, and 16% potash (also known as potassium). The weight of the container or bag of Miracle-Gro All Purpose Plant Food is 1.5 lbs, which is the amount of fertilizer that is contained in the package.
The table shows the actual amounts of nitrogen, phosphate, potash, oxygen, and zinc (sometimes abbreviated as Za) in the fertilizer, based on the given weight of the fertilizer. This information is important for determining how much fertilizer to apply to plants and for maintaining proper plant nutrition. Nitrogen is an important component for promoting leaf growth, while phosphorus is important for root development and flowering. Potassium helps to promote overall plant health and resistance to disease.
Oxygen is not a component of fertilizer but is listed here because it is sometimes used as a filler in fertilizers to increase the volume. Zinc is also not a major component of most fertilizers but may be present in small amounts to help promote plant growth.
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Read this passage about Christopher Reeve.
Christopher Reeve was born on September 25, 1952, in New York City. His mother was a journalist, and his father was a professor. As a kid he played sports, did well in school, and liked acting. His passion for acting goes back to playing with his brother when they were little. Reeve acted in his first play at the age of nine. After attending college, taking acting classes, and acting in many plays and movies, Reeve landed his biggest role. In 1978, he played the title role in Superman. He received very positive reviews for his performance and starred as Superman in all the sequels. Reeve was soon acting as the lead role in dozens of movies after Superman. Once well-known, Reeve used his celebrity status for good causes, such as visiting very sick children through the Make-A-Wish foundation. He was also a track and field coach at the Special Olympics.
Besides acting, Reeve was also a licensed pilot and liked horseback riding. He learned to ride horses for a movie role, and he continued riding in his free time. Unfortunately, while riding one day in 1995, Reeve fell from his horse and became paralyzed from the neck down. Being confined to a wheelchair did not hold back Reeve from being socially active, and after many surgeries and rehabilitation, he decided to dedicate his life to helping people with spinal-cord injuries. He created the Christopher Reeve Foundation, which supports the improvement of the lives of people with disabilities and helps fund research to find a cure for paralysis. He was also politically active, working with senators to make sure that people with disabilities were treated fairly in the workplace. Reeve received many awards for his dedication to public service. He also wrote two books about his experiences, and a documentary was made about his life. Reeve passed away in 2004, but his legacy lives on today. He touched the lives of many people and showed us what it means to overcome extreme odds by never giving up.
Based on this passage, Reeve best fits in the yearbook category
“Most Likely to Take Risks.”
“Most Likely to Help Others.”
“Most Likely to Run for President.”
“Most Likely to Be a Musician.”
PLEASE HURRY ONLY 10 MINUTES LEFT
Answers
Answer:
"most likely to help others"
Explanation:
thank u hope it helps u
What is the total mass shown on the triple beam balance scale?
A.163.5 g
B.253.5 g
C.263.5 g
D.283.5 g
Answers
Answer:
263.5
Explanation:
Add everything
If magnesium nitrate and sodium hydroxide are reacted together. What is the resultant colorless jelly-like precipitate that forms?
Answers
If magnesium nitrate and sodium hydroxide are reacted together the product formed are magnesium hydroxide and sodium nitrate.
Sodium nitrate is the chemical compound having the formula NaNO₃. This alkali metal nitrate salt is also known as Chile saltpeter to distinguish it from ordinary saltpeter, potassium nitrate. It is used as preservative agents in cured meats such as bacon, sausage and in some cheeses. It appears as a white crystalline solid. It is Noncombustible but accelerates the burning of combustible materials. It May explode under prolonged exposure to heat or fire. The toxic oxides of nitrogen are produced in fires. It is used in solid propellants, explosives, fertilizers, and for many other uses.
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the process of translation in both prokaryotes and eukaryotes requires trnas, amino acids, and ribosomal subunits. which of the following components must also be present for translation to proceed? question 3 options: protein factors and atp protein factors and gtp signal peptides plus release factor polymerases and gtp
Answers
The component that must also be present for translation to take place is Factor Polymerases and GTP Initiation. Correct answer: letter C.
Since, the factorial polymerases bind to the mRNA and initiate the translation process. GTP is also needed to provide the energy necessary to move the mRNA along the ribosome. Without these components, translation could not take place.
What is the cell transduction process?Is the process by which extracellular signals, such as hormones and growth factors, are converted into intracellular signals. This process begins with the binding of a signal molecule to a receptor on the surface of the cell.
This binding triggers a series of biochemical reactions and intracellular signaling pathways, leading to a cellular response, such as:
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Which unit is commonly used for measuring pressure?
O m3
O bar
O N/m3
O Celsius
Answers
Answer:
3
Explanation:
Answer:
bar
Explanation:
yes
A tortoise uses its eyes to see something moving nearby. The tortoise feels threatened by the movement. It pulls its head, legs, and tail into its shell. The tortoise's shell is hard and thick. This helps protect the turtle's soft body parts from any danger. Which of these describes a response of the tortoise to sensory information processed by its brain?
A. The tortoises shell is hard and thick.
B. The tortoise pulls its head, legs, and tail into its shell.
C. The tortoises soft body parts are protected from any danger.
D. The tortoise uses its eyes to see something moving nearby.
Answers
You are given a stock solution of 500.0 mL of 1.00M magnesium chloride solution. Calculate the volume of the stock solution you would need to use to prepare 250.0 mL of 0.20 M solution.
Answers
Answer:
\(50\; \rm mL\) of the stock solution would be required.
Explanation:
Assume that a solution of volume \(V\) contains a solute with a concentration of \(c\). The quantity \(n\) of that solute in this solution would be:
\(n = c \cdot V\).
For the solution that needs to be prepared, \(c = 0.20\; \rm M = 0.20\; \rm mol \cdot L^{-1}\). The volume of this solution is \(V = 250.0\; \rm mL\). Calculate the quantity of the solute (magnesium chloride) in the required solution:
\(\begin{aligned}n &= c \cdot V \\ &= 0.20\; \rm mol \cdot L^{-1} \times 250.0\; \rm mL \\ &= 0.20\; \rm mol \cdot L^{-1} \times 0.2500\; \rm L \\ &= 0.050\; \rm mol\end{aligned}\).
Rearrange the equation \(n = c \cdot V\) to find an expression of volume \(V\), given the concentration \(c\) and quantity \(n\) of the solute:
\(\displaystyle V= \frac{n}{c}\).
Concentration of the solute in the stock solution: \(c(\text{stock}) = 1.00\; \rm M = 1.00\; \rm mol \cdot L^{-1}\).
Quantity of the solute required: \(n = 0.050\; \rm mol\).
Calculate the volume of the stock solution that would contain the required \(n = 0.050\; \rm mol\) of the magnesium chloride solute:
\(\begin{aligned}& V(\text{stock}) \\ &= \frac{n}{c(\text{stock})} \\ &= \frac{0.050\; \rm mol}{1.00\; \rm mol \cdot L^{-1}} \\ &= 0.050\; \rm L \\ &= 50\; \rm mL\end{aligned}\).
What is the molarity of each of these solutions? d. 1.66 g LiNO3 in 455 mL of solution
Answers
To find the molarity of the solution, we first need to calculate the number of moles of LiNO3 present in the solution, using its given mass and molar mass.
The molar mass of LiNO3 can be calculated by adding the atomic masses of lithium (Li), nitrogen (N), and three oxygen (O) atoms:
Molar mass of LiNO3 = 6.94 g/mol (Li) + 14.01 g/mol (N) + 3 x 16.00 g/mol (O) = 68.94 g/mol
Next, we can calculate the number of moles of LiNO3 by dividing its mass by its molar mass:
Number of moles of LiNO3 = 1.66 g / 68.94 g/mol = 0.0241 mol
Finally, we can calculate the molarity of the solution by dividing the number of moles of solute by the volume of the solution in liters:
Molarity = Number of moles / Volume of solution in liters
The volume of the solution is given as 455 mL, which is equivalent to 0.455 L. Therefore, we can calculate the molarity as:
Molarity = 0.0241 mol / 0.455 L = 0.053 mol/L
Therefore, the molarity of the solution is 0.053 mol/L or 0.053 M (molar).
If the half-life of a radioactive substance is 500 million years and you have 48 atoms of it, how many half-lives will have passed by the time that 6 atoms of the substance remain?
O A. 3
O B. 2
O C. 4
O D. 5
Answers
Answer: 3
Explanation:
explain why we must balance all chemical equations
Answers
Answer:
The chemical equation needs to be balanced so that it follows the law of conservation of mass.
Explanation:
Explanation:
the chemical equation needs to be balance so that it follows the law of conservation of mass. a balance chemical equation occurs when the number of the different atoms of elements to the reactants side is equal to that of the product side. balancing chemical equation is a process of trial and error .
Calcium is element 20 in the Periodic Table, has a mass of 40 amu and forms a 2+ ionic species. The calcium ion therefore has a. 18 protons, 18 neutrons and 22 electrons b. 22 protons, 18 neutrons and 18 electrons c. 20 protons, 20 neutrons and 18 electrons d. 18 protons, 20 neutrons and 20 electrons e. 20 protons, 18 neutrons and 20 electrons 1. In the following expression a∼1/b, what is the relationship between the components a and b ? a. Direct proportion b. None of the above c. Exact equation d. Inverse proportion e. Proportionality constant
Answers
The calcium ion has 18 protons, 20 neutrons, and 20 electrons.
The relationship between the components a and b is Inverse proportion.
The calcium ion (Ca2+) has a 2+ charge, indicating that it has lost 2 electrons from its neutral state. To determine the number of protons, neutrons, and electrons in the calcium ion, we need to consider its atomic number and mass.
The atomic number of calcium is 20, which indicates that it has 20 protons. Since the calcium ion has a 2+ charge, it means it has lost 2 electrons. Therefore, the number of electrons in the calcium ion is 20 - 2 = 18.
The mass number of calcium is 40 amu, which represents the total number of protons and neutrons. Since the calcium ion has 20 protons, the number of neutrons can be calculated as 40 - 20 = 20.
So, the correct option is: d. 18 protons, 20 neutrons, and 20 electrons
In the expression a∼1/b, the relationship between the components a and b is an inverse proportion. This means that as the value of a increases, the value of b decreases, and vice versa. The symbol ∼ represents the proportional relationship between a and 1/b, indicating that they are inversely related. Therefore, the correct answer is: Inverse proportion
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A 60kg bucyclist going 2 m/s increased his output by 1800 j .what was his final velocity
Answers
Answer:
8
Explanation:
trust
what are the two major components of the climate
Answers
Answer:
Water and carbon. They are important for climate, and they are important for life.
If a gas at 25.0 °C occupies 3.60 liters at a pressure of 1.00 atm, what will be its
volume at a pressure of 2.50 atm?
Answers
Answer:
1.44 L
Explanation:
If the temp does not change
P1V1 = P2V2
1 * 3.6 = 2.5 * V2
V2 = 1.44 L
a gas has (select all that apply). a particles that hold a very definite pattern. b particles with no definite pattern. c very little space between particles d particle that bounce all over the place. e a lot of space between particles
Answers
B: gas particles have no definite pattern (shape/volume)
D. Particles bounce all over the place as they constantly move straight
E. A lot of space between particles because gasses are less dense than solids & liquids
2. Which of the following shows the correct, balanced equation for the reaction shown below?
CH4+0₂H₂O + CO₂
O CH, + O, → CHO
O CH4 +20₂ → 2 H₂O + CO₂ OCH, + O2 → H2O +CO,
OCH4 +0₂ → CH₂0
Answers
The balanced equation is \(\text{CH}_{4}+2\text{O}_{2} \longrightarrow \text{CO}_{2}+2\text{H}_{2}\text{O}\).
The correct balanced chemical equation is CH₄ + 2 O₂\(\rightarrow\) CO₂ + 2 H₂O.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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The titration of an impure sample of KHP found that 36.00 mL of 0.100 M NaOH was required to react completely with o.758 g of sample. What is the percentage of KHP in this sample?
Answers
The weight percentage of the solute in a solution can be calculated from the total weight of the solution determined. The weight percentage of KHP in the sample is 84.03 %.
What is weight percent?Weight percent of a component of a sample is the weight fraction of that component in the total weight of the sample. Thus it is the ratio of weight of the solute to the total weight of the solvent.
Here the molarity of the solution is 0.100 M and volume is 36.0mL, from this the number of moles of NaOH, is 0.036 L × 0.100 M = 0.0036 moles. The molar mass of NaOH is 40 g/mol. Thus the weight of 0.0036 moles is 40 × 0.0036 = 0.902 g.
Thus, the percent of KHP in the sample is calculated as follows:
percent = 0.758 /(0.902 +0.758 ) ×100
= 84.03%.
Hence, percent of KHP in the sample is 84.03.
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Help me pls I will mark you as brain
Answers
Answer:
carbon ground injection
Please help pleaseeeeee
Answers
Answer:
C
Explanation:
It can already be seperated because the mixture hasn't disolved into the water yet.
for fires to exist, four major elements must be present at the same time. they are hydrogen, fuel, heat for ignition, and the chemical reaction of fire.
Answers
For a fire to exist, four elements must be present simultaneously: hydrogen, fuel, heat for ignition, and the chemical reaction of fire. These elements are essential components of the fire triangle, which represents the conditions necessary for combustion to occur.
The combination of these elements leads to the sustained release of energy in the form of fire.
The fire triangle concept highlights the interdependence of the four elements required for a fire to exist. First, hydrogen refers to any substance that can act as a reducing agent, supplying electrons to support the combustion process. It is one of the components that contribute to the fuel source.
Fuel is the material that undergoes combustion and provides the necessary energy to sustain the fire. This can be solid, liquid, or gaseous substances that are capable of undergoing chemical reactions with oxygen.
Heat is the energy input required to initiate the ignition and sustain the chemical reactions involved in the fire. It raises the temperature of the fuel to its ignition point, at which combustion can occur.
The chemical reaction of fire involves the exothermic reaction between the fuel and oxygen, resulting in the release of heat and the production of combustion byproducts such as smoke, gases, and ash.
When all four elements are present simultaneously, a fire can ignite and propagate. Understanding and managing these elements are crucial for fire prevention, suppression, and safety measures.
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