Calculate the density of an irregularly shaped object that weighs 15.324 g. The volume of the object was measured through displacement. The initial volume in the graduated cylinder was 20.8 mL and the final volume was 34.8 mL.
Answers
The correct option is C. The density of an irregularly shaped object weighs 1.09 g/mL.
Mass = 15.324 g
The volume of the object = final volume - initial volume
= 34.8 mL - 20.8 mL
= 14 mL
Now use:
density = mass/volume
= 15.324 g / 14 mL
= 1.09 g/mL
Density (volumetric mass density or specific mass) is the substance's mass in line with a unit of volume. The symbol most usually used for density is ρ (the decreased case Greek letter rho), although the Latin letter D also can be used. Mathematically, density is defined as mass divided by using extent:
The density of cloth varies with temperature and stress. this alteration is commonly small for solids and liquids but a great deal more for gases. increasing the stress on an object decreases the volume of the object and for that reason increases its density. increasing the temperature of a substance (with a few exceptions) decreases its density by growing its volume. In maximum substances, heating the bottom of fluid results in convection of the heat from the bottom to the top, because of the lower density of the heated fluid, which reasons it to rise relative to the denser unheated fabric.
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Complete Question:
Calculate the density of an irregularly shaped object that weighs 15.324 g. The volume of the object was measured through displacement. The initial volume in the graduated cylinder was 20.8 mL and the final volume was 34.8 mL.
A).0.914g/ml
B).0.737g/ml
C).1.09g/ml
D).0.440g/ml
Related Questions
When a bunsen burner is properly adjusted, what should the flame look like?.
Answers
When a bunsen burner is properly adjusted, the flame look like outer violet and inner blue colour.
What is the clolur of flame?When a burner is properly adjusted the flame should have an outer violet oxidizing flame and an inner blue reducing flame. The temperature of blue colour is 15000 degree Celsius whereas the cool region outside the blue has 3000C temperature.
So we can conclude that When a bunsen burner is properly adjusted, the flame look like outer violet and inner blue colour.
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2 c2h2(g) 5 o2(g) -----> 4 co2(g) 2 h2o(g) if you have 3.40 moles of acetylene (c2h2) for a complete reaction, how many moles of o2 are needed:
Answers
The 0.16 moles of o2 are needed for to complete this reaction.
What is mole?
The term "mole" refers to the volume of a system that includes as many elementary particles as there are atoms in 0.012 kilograms of carbon 12.
What is acetylene?
The simplest alkyne chemical, often known as acetylene. Ethyne, narceine, and vinylene are other names for acetylene. It is widely utilised as a fuel and a component of chemical compounds. It is treated as a solution even though it is unstable in its pure state.
2C2H2(g)+5O2(g)→4CO2(g)+2H2O(g)
A) 2 moles C2H2 require 5 moles O2
3.0 moles C2H2 require 3.0 x 5 / 2 = 7.5 moles O2
moles of O2 required = 7.5
B) 2 moles C2H2 produce 4 moles CO2
3.2 moles CH2 produce 3.2 x 4 / 2 = 6.4
moles of CO2 produced = 6.4
C) 2 moles H2O require 2 moles C2H2
0.58 moles H2O require 0.58 x 2 / 2 = 0.58 moles C2H2
moles C2H2 require = 0.58
D) 5 moles O2 produce 4 moles CO2
0.20 moles O2 produce 0.20 x 4 / 5 = 0.16
moles CO2 produced = 0.16
Therefore, 0.16 moles of o2 are needed for to complete this reaction.
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Reaction between silver nitrate and sodium chloride. A balanced chemical equation
Answers
Answer:
NaCl(aq) + AgNO3(aq) Sodium Silver chloride nitrate AgCl(s) + NaNO3(aq) Silver Sodium chloride nitrate
consider an iron cube and an aluminun cube. If the two cubes were at the same temperature, how would the average kinetic energy of the particles in iron compare with the average kinetic energy of the particles in aluminun
Answers
Answer:
I think there would be no differences
#7) How many waves are in this picture?
Answers
Answer:
4
Explanation:
Answer:
B.
Explanation:
I don't know much about this subject, but it seems that a wave is when the line is above the line in the middle.
How many centimeters are in 5 miles? Hint: 1 miles = 5280 feet
Answers
Which term is defined as the change from liquid water to water vapor?.
Answers
evaporation is the process of liquid water changing to water vapor
Which one of the following compounds is most likely to be ionic? select one:
a. hnf2
b. h2co
c. n2h4
d. cacl2
e. icl
Answers
CaCl2 is the compound which is more likely to be ionic .
Ionic compounds: what makes them?Ions, charged particles that develop when an atom (or group of atoms) gets or loses electrons, are the building blocks of ionic compounds. An anion is a negatively charged ion, whereas cations are positively charged ions. When two elements create molecules by a covalent link and share electrons, this results in covalent or molecular compounds.
When Cacl2 dissolve in aqueous solution it gives Ca+² and cl- ions.
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write an assignment on primary sources of information on modern Indian history
please answer
please
please
Answers
Explanation:
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arrow_backSources of Information on Modern Indian History
Summary
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References
A primary source of information for historians is the official records of the British administration. The British kept written records of every key instruction, meeting, transaction, investigation, plan, policy decision and agreement. They attached record rooms with all the important administrative institutions.
The British built specialized institutions like museums and archives to preserve important documents.
Historians gather important information about the provincial administrative system from the reports, memos, notings and letters preserved in the 19th century in the archives and record rooms across India.
For effective administration, the British carried out a number of surveys in the early 19th century.
By the end of the 19th century, censuses of all the Indian provinces were being carried out every ten years. This helped to collect information on the religion, caste and occupation of the people. These surveys have helped historians to collect information about modern India.
Personal diaries of personalities like Jawaharlal Nehru and Sardar Vallabhbhai Patel, newspapers, popular books like The Discovery of India and Glimpses of World History, autobiographies of personalities like Mahatma Gandhi, and accounts of travellers and pilgrims give a deep insight into the lives of the common people.
Proxima Centauri is the nearest star to Earth, besides the sun. What can you predict about its brightness compared to other stars? A. Proxima Centauri would be one of the brightest stars in the night sky. B. Proxima Centauri would have the same brightness as other stars in the night sky. C. Proxima Centauri would be one of the dimmer stars in the night sky. D. There is not enough information to make this prediction.
Answers
Answer:
ITS D
Explanation:
Answer:
I did the test and the answer is A.
PLEASE HELPPPPP I WILL GIVE BRAINLEST FOR WHOEVER FINDS THE ANSWER!!!
As stated in the article, “As Sticky as a Gecko . . . but Ten Times Stronger!,” the adhesive the researchers developed sticks best when it is pulled down parallel to the surface. What type of adhesion is this called?
nano adhesion
perpendicular adhesion
shear adhesion
weak adhesion
Answers
Answer:
sheer adhesion
Explanation:
edge 2021
What mass of HI should be present in 0.200L of solution to obtain a solution with each of the following pH's?
pH=1.20
pH=1.75
pH=2.85
Answers
The mass of HI should be present in 0.200l of solution to obtain a solution with pH value's,
(a) pH value is 1.20 the mass is 1.08g
(b) pH value is 1.75 the mass is 0.0066g
(c) pH value is 2.85 the mass is 0.00012g
To solve this problem, we must determine the concentration of H+ ions in the solution using the pH of the solution and the dissociation constant of HI. The concentration of HI and the mass of HI required to make the solution may then be calculated.
The dissociation reaction for HI is:
HI(aq) ↔ H+(aq) + I-(aq)
The dissociation constant, Ka, for this reaction, is:
Ka = [H+][I-]/[HI]
This formula may be simplified by assuming that the starting concentration of HI is equal to the concentration of I- produced, which is equal to the concentration of H+ produced due to the reaction's 1:1 stoichiometry. This results in:
Ka = [H+]^2/[HI]
Solving for [H+], we get:
[H+] = sqrt(Ka*[HI])
Taking the negative log of both sides gives us the pH of the solution:
pH = -log[H+] = -log(sqrt(Ka*[HI]))
pH= -0.5*log(Ka) - 0.5*log([HI])
Rearranging this equation, we get:
[HI] = 10^(-(pH + 0.5*log(Ka)))/V
where V is the volume of the solution.
Now we can calculate the mass of HI required for each pH:
(a) For pH = 1.20:
Ka for HI is 1.3 x 10^-10. Substituting this value into the equation above, we get:
[HI] = 10^(-(1.20 + 0.5*log(1.3 x 10^-10)))/0.200L ≈ 0.0042 M
The mass of HI required is:
mass = concentration x volume x molar mass
= 0.0042 mol/L x 0.200 L x 127.91 g/mol
≈ 1.08 g
Therefore, approximately 1.08 grams of HI is required to prepare a solution with a pH of 1.20.
(b) For pH = 1.75:
[HI] = 10^(-(1.75 + 0.5*log(1.3 x 10^-10)))/0.200L ≈ 0.00026 M
mass = 0.00026 mol/L x 0.200 L x 127.91 g/mol ≈ 0.0066 g
Therefore, approximately 0.0066 grams of HI is required to prepare a solution with a pH of 1.75.
(c) For pH = 2.85:
[HI] = 10^(-(2.85 + 0.5*log(1.3 x 10^-10)))/0.200L ≈ 0.0000047 M
mass = 0.0000047 mol/L x 0.200 L x 127.91 g/mol ≈ 0.00012 g
Therefore, approximately 0.00012 grams of HI is required to prepare a solution with a pH of 2.85.
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b. 8500°C 600°C d. 3700°C с C 9. Which organic acid is found in apple a. Tannic acid b. Malic acid c) Lactic acid d citric acid
Answers
Answer:
b. Malic Acid
Explanation:
Malic (organic) Acid is found in apple.
GL
For the set of ionic compounds, LiCl, AgCl, PbCl2, choose the correct characterization of their solubilities in water from the response list. Group of answer choices All three salts are soluble. None of the three salts are soluble. Two of the three salts are soluble. One of the three salts is soluble.
Answers
Answer:
Two of the three salts are soluble.
One of the three salts is soluble.
Explanation:
One or two of the three salts would be soluble in water depending on if the water is cold or hot.
According to the solubility rules of chloride salts, all chlorides are soluble in cold water except for those of silver (Ag), lead (Pb), and mercury (I) (Hg).
This thus means that both AgCl and \(PbCl_2\) would be insoluble in cold water while LiCl would be soluble.
\(PbCl_2\) is, however soluble in hot water.
Hence, in cold water, one of the three salts (LiCl) would be soluble, while in hot water, two of the three salts (LiCl and \(PbCl_2\)) would be soluble.
The down-slope movement of material on Earth is called a slope failure. It is the failure of the slope resulting in transport of debris downhill by
sliding, rolling, falling, or slumping. This is an example of slope failure called
Answers
To solve this we must be knowing each and every concept related to landslides. Therefore, the given process describe the landslides process.
What is landslides?Slope collapses are essentially natural calamities that occur in a variety of locations across the world. Slope failures, often known as landslides, define a wide range of mechanisms that produce the outward or downward of slope-forming materials such as rock, soil, or landfills.
The down-slope movement of material on Earth is called a slope failure. It is the failure of the slope resulting in transport of debris downhill by sliding, rolling, falling, or slumping. This is an example of slope failure called landslides.
Therefore, the given process describe the landslides process.
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3. How does genetic variation allow humans to survive long-term? Which
type of reproduction is responsible for genetic variation?
Answers
Answer:
more genetic variation within a population usually enables more phenotypic variation.
Explanation:
Because natural selection acts directly only on phenotypes, Some new alleles increase an organism's ability to survive and reproduce, which then ensures the survival of the allele in the population.
Genetic variation lets the organisms survive long term as it increases the phenotypic and the genotypic variation. Genetic variation is due to the type of reproduction that involves two parents.
What is genetic variation?Genetic variation is the modification of the original genome of the organism by genetic recombination and mutation that can be beneficial in the survival and the natural selection process.
Reproduction involving two parents of the same species allow genetic variation as the process of independent assortment and crossing over of the chromosomes inherited from both creates species with different traits and genotype.
Therefore, the reproduction involving two parents results in genetic variation.
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Non-native species are typically introduced into an area because they serve a purpose. Why was kudzu introduced into the United States? Check all that apply.
Answers
Answer:
Explanation:
The Kudzu is a plant that was introduced to the United States from Japan in the year 1876. In the United States it was introduced as an ornamental plant but with a reason which was to prevent soil erosion. Kudzu was disseminated as being high-protein content used to steer feed as well as a spreading plant to counteract soil erosion.
Answer:
Kudzu was introduced as an ornamental plant.
+
Kudzu was introduced as a way of preventing soil erosion.
So, A and D!
1.40 L solution was made by mixing 69.3 mL of dioxane, Which has a density of 1.03 g/mL, and 1.3 L of Toluene, Which has a density of 0.87 g/mL. Calculate the volume percent of dioxane in the solution. Be sure your answer has the right number of significant digits.? %(v/v)
Answers
To calculate the volume percent of dioxane we will apply the following formula:
\(Volumepercent=\frac{\text{Volume of solute}}{Volume\text{ of solution}}\times100\)In this case, the solute will be dioxane, and the volume will be 69.3 mL.
To calculate the volume of solution we will sum both volumes:
Volume of solution = Volume of dioxane + Volume of Toluene
Volume of solution = 69.3 mL + 1300 mL
Volume of solution = 1369.3 mL
\(Volumepercent=\frac{\text{6}9.3\text{ mL}}{1369.3\text{ mL}}\times100\text{ = 5.1}\)We are given all the data with a significant digit, therefore we must report the result also with a significant digit. So the answer will be.
The volume percent of dioxane in the solution is 5.1 %(v/v)
if you had 8 moles of sodium and an excess amount of oxygen gas how many moles of sodium oxide would you expect to produce
Answers
The balanced chemical equation for the reaction between sodium and oxygen to form sodium oxide is: 4Na + O2 → 2Na2O According to the balanced equation, 4 moles of sodium react with 1 mole of oxygen to produce 2 moles of sodium oxide.
Therefore, the stoichiometric ratio is 4:1:2 (sodium:oxygen:sodium oxide). If you have 8 moles of sodium, you can use the stoichiometry to determine the amount of sodium oxide produced. Since the ratio of sodium to sodium oxide is 4:2, you would expect to produce half the number of moles of sodium oxide compared to the moles of sodium. Therefore, with 8 moles of sodium, you would expect to produce 4 moles of sodium oxide.
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What is the missing word? When biofuels are burned they release the same amount of carbon dioxide as was removed from the atmosphere
by the plant. Biofuels are therefore described as being carbon___
Answers
Answer:
Many scientists view biofuels as inherently carbon-neutral: they assume the carbon dioxide (CO2) plants absorb from the air as they grow completely offsets, or “neutralizes,” the CO2 emitted when fuels made from plants burn.
Explanation:
put in your own words, happy to help
To solve such this we must know the concept of combustion reaction. Therefore, the missing word is neutral that is Biofuels are therefore described as being carbon neutral.
What is chemical reaction?Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.
When biofuels are burned they release the same amount of carbon dioxide as was removed from the atmosphere by the plant. Biofuels are therefore described as being carbon neutral. the products of combustion reaction are carbon dioxide and water.
Therefore, the missing word is neutral.
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whats the unit for mass
Answers
Answer:
The unit for mass is the kilogram (Kg).
Explanation:
Hope this helped!! <3 good luckk!!
Which one is a single replacement reaction? (Whoever gets it correct first I’ll mark)
Answers
The equation that represents a single replacement reaction given the various options is 2Al(s) + 6HCl -> 2AlCl₃(aq) + 3H₂O(g) (option 2)
What is a single replacement reaction?A single replacement reaction, also known as single displacement reaction is a reaction in which elements higher in the electro-chemical series displace or replace elements lower in the electro-chemical series displace from a solution.
The following example illustrates single replacement reaction:
A + BC -> AC + B
From the above reaction, we can see that A has replace/displace B to from AC.
With the above information, we can determine the equation that represents single replacement reaction. Details below:
Equation from the questions:
2Al + 3Cl₂ -> 2AlCl₃2Al(s) + 6HCl -> 2AlCl₃(aq) + 3H₂O(g)2AlCl₃(aq) -> 2Al + 3Cl₂ AlCl₃ + 3KOH -> Al(OH)₃ + 3KClFrom the above, we can see that only 2Al(s) + 6HCl -> 2AlCl₃(aq) + 3H₂O(g) conform to single replacement reaction.
Thus, the correct answer to the question is: 2Al(s) + 6HCl -> 2AlCl₃(aq) + 3H₂O(g) (option 2)
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Which of these conclusions is correct about P and Q in the diagram?
P represents the land and Q represents the ocean.
P represents the ocean and Q represents the land.
P represents the land and Q represents the atmosphere.
P represents the atmosphere and Q represents the ocean.
Answers
Answer:
P represents the atmosphere and Q represents the ocean.
Explanation:
The temperature of water at the bottom of the deep ocean near the equator is likely to be closest to
12 Celsius
19 Celsius
50 Celsius
2 Celsius
Answers
Answer:
Four folk love legends: "Cowhand and Weaver Girl", "Meng Jiangnu crying at the Great Wall" (cry Wan Xiliang), "Liang Shanbo and Zhu Yingtai", "The Legend of the White Snake", the author does not know
The development history of the Four ancient Chinese folk legends: China is a country with a vast territory and abundant resources and a long history, which contains extremely rich national cultural heritage. Among them, the four most Chinese ones are the famous "Cowhand and Weaver Girl", "Meng Jiangnu", "Liang Shanbo and Zhu Yingtai" and "The Legend of the White Snake". The most widespread, the most influential.
Brief introduction: the gigolo knit legend began in the book of songs, cable ":" Qi he vega ", "Huan he cow". "Nineteen Ancient Poems · Long Distance Star" has called the cowherd and weaver girl husband and wife. Ying Shao "custom" Yi wen: "Zhinv Tanabata when crossing the river, make magpie bridge, legend has it that the magpie head without reason all Kun, because beam (note: bridge) to cross Zhinv also. The story has been preliminarily formed and combined with the Qixi Festival custom.
The legend of Meng Jiangnu originated from the record of Qi Liang's wife refusing to hang herself in the area of the Marquis of Qi and adhering to the rules of etiquette in the Zhuan. Later, it was added in the Dangong that "Duke Zhuang of Qi attacked Ju and took away (tunnel) and Qi Liang died. The weeping wife who greeted his coffin on the road is the archetype of the story. Han Liu Xiang's Biography of Liannu (IV) : "Qi Liangzhu died in battle, his wife cried in the city, ten days the city collapsed." And Tang (anonymous) "carved jade collection" record "Qin when Yan Qi Liang, married Meng Chao female Zhongzi wife, because good was built the Great Wall officials killed, Zhongzi cry under the Great Wall, the city collapsed. It is known that this legend was popular in the Tang Dynasty, but Meng Zhongzi and Qiliang were renamed Meng Jiangnv and Fan Xiliang in the legend. The story of Butterfly lovers first appeared in Tang's "Ten Taoist and Four Tibetan Records", which recorded the story of Liang and Zhu "having a taste of schoolmates" and "sharing the tomb". There are more detailed records in Xuanbaozhi of late Tang Zhang Reading. To the Ming Dynasty Feng Menglong's "Ancient and modern novels", and added to the British Taiwan confused belt, Liang Shanbo doubts and butterflies.
The story of White Snake came into being the latest. The origin of the story is as follows. It originates from the Three Towers of West Lake. To the Ming Dynasty Feng Menglong's "Lady White Forever Town Leifeng Pagoda" (" Warning Word "), the story has been preliminarily finalized.
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1. You learned that waves in the ocean, sound waves, and light waves all have certain things in common. They all carry energy. The velocity, frequency, and wavelength of each is connected by the same equation. Which type of wave would you most want to learn more about? Why does it interest you? What would you want to find out about it? Write your answers in 2-3 paragraphs. (10 points) Would you like to know more about how waves in the ocean move, how sound travels, or how light works?
2. If you could somehow travel inside an atom and look around, what part of the atom would you want to look at? Why? What would you want to understand better as a result of your "travels"? Write your answers in 2-3 paragraphs. (10 points) Do electrons or the nucleus interest you more? What questions do you still have about how an atom works?
Answers
Answer:
Explanation:
1) I personally would want to learn more about how the waves in the ocean move. About what causes high tide. What causes low tide. Why some waves are big and some small.
I know it has something to do with the gravitational pull of the moon. But that is as far as my knowledge extends on the subject. I have always been fascinated with the secrets of the ocean and the secrets of space. To me learning, this is a little of both.
2) The nature of the interaction between neutrons and protons in the atomic nucleus, which binds the nucleons together, is the biggest wonder in the inside of the atom that I would like to really know. Protons have a positive charge, but neutrons do not. What form of interaction between a charged particle and an uncharged particle is possible? That is what I expect to learn more about as a result of my explorations into the inner workings of the atom.
The inside of the atom is made up of the nucleus and electrons that travel about in orbits. The nucleus is made up of protons and neutrons. Electrons have a negative charge, protons have a positive charge, and neutrons have none. The nucleus is held together by electrostatic interaction between electrons and protons. The majority of the mass of an atom is made up of protons and neutrons.
I'm interested in finding out more about ocean waves travel. regarding the reason for high tide. what brings on a low tide. Although some waves become also large while others are smaller.
What are ocean waves?Ocean waves seem to be alterations to the ocean's surface. They could be produced by water being moved by the wind, gravity, as well as other forces.
What are waves?A disturbance that moves from one place to another across a medium has been referred to as a wave. As an illustration of a wave, think of a sinuous wave.
Personally, I'm interested in finding out more about ocean waves travel. regarding the reason for high tide. what brings on a low tide. Although some waves become also large while others are smaller I'm certain that the moon's gravitational force is somehow implicated. Because that is basically the extent of my expertise on the matter. The mysteries of the water and the mysteries of space have always interested me. I'm still learning, so this combines a bit of both.The largest enigma in the interior of the atom something I would really like to understand is the nature of the connection involving neutrons as well as protons in the nucleus of an atom, which holds the nucleons together. Neutrons just don't have a positive electrical charge, whereas protons do. What kind of interactions is conceivable between charged as well as uncharged particles. Through my investigations into the internal workings of the atom, I hope to understand more about it.
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what type of chemical reaction is
10.Pb + FeSO, → PbSO, + far
Answers
Answer: To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. The balanced equation will appear above. Use uppercase for the first character in the element and lowercase for the second character.
Explanation:
A 10-kg rock falls from a height of 8.0 m above the
ground. What is the potential energy of the rock?
Answers
The mass of the rock is 10 kg, the height is 8 m and the gravitational acceleration on earth is ALWAYS constant (9.8m/s^2). So this is what you do:
PE= 10 x 9.8 x 8
PE= 784 Joules.
balance the following skeleton equations Mg+02---->MgO
Answers
Answer: \(2Mg+O_2\rightarrow 2MgO\)
Explanation:
Skeletal equations are defined as the equations in which formula are used to indicate the chemicals that are involved in a chemical reaction.
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
Thus the balanced chemical equation will be :
\(2Mg+O_2\rightarrow 2MgO\)
Conclude Is the element silicon likely to form ionic or covalent bonds? Explain.
Answers
What gas is measured in an ICE CORE and what is the correlation between that gas and temperature?
Answers
Answer:
Explanation By looking at past concentrations of greenhouse gasses in layers in ice cores, scientists can calculate how modern amounts of carbon dioxide and methane compare to those of the past, and, essentially, compare past concentrations of greenhouse gasses to temperature. Ice coring has been around since the 1950s.n:
Answer:
oh what the guys said above me