Answers
Speed in excess of 100 km/h, which is 208.8 km / h
Further explanationLinear motion consists of 2: constant velocity motion with constant velocity and uniformly accelerated motion with constant acceleration
• An equation of uniformly accelerated motion
\(\large {\boxed {\bold {x=xo+vo.t+\frac {1} {2} at ^ 2}}}\)
vt = vo + at
vt² = vo² + 2a (x-xo)
x = distance on t
vo / vi = initial speed
vt / vf = speed on t / final speed
a = acceleration
I think it's not chemistry but physics
KnownΔx = 290 m
vf = 0⇒stop
Δt = 10 s
We use the formula in the question
\(\tt \Delta x=\dfrac{1}{2}(vf+vi)\Delta t\\\\290=\dfrac{1}{2}(0+vi).10\\\\vi=58~m/s=\boxed{\bold{208.8~km/h}}\)
Related Questions
Pressure is exerted by a gas or liquid in one direction only.
O True
O False
Answers
Answer:
false
Explanation:
the pressure exerted by a gas or liquid can move in all directions whether the fluid is still, if it's moving at a constant speed or if it's changing speed!
equation . the value for for is at . the student places the same mass of into of different solutions with specific values and measures the concentration of ions in each solution after equilibrium is reached. based on the data in the table, what can be concluded about the solubility of ? (a) the solubility of is unaffected by because is a constant value at . (b) the solubility of is unaffected by because it is the same value for 7.00 and 8.00. (c) is more soluble at higher because lower concentrations of shift the solubility equilibrium toward and . (d) is less soluble at higher because
Answers
(c) is more soluble at higher because lower concentrations of shift the solubility equilibrium toward and.
The solubility of a substance refers to the amount of that substance that can dissolve in a given amount of solvent at a given temperature and pressure. In this situation, the student is placing a certain mass into different solutions with specific values, and then measures the concentration of ions in each solution after equilibrium is reached.
Based on the data in the table, it can be concluded that:
The solubility is affected by the concentration of ions in the solution.As the concentration of ions decreases (as the goes from 7.00 to 8.00), the solubility of increases.This is because as the concentration of ions decreases, the solubility equilibrium shifts, allowing more to dissolve in the solution.In summary, the solubility of is more at higher because lower concentrations of shift the solubility equilibrium towards and. It means as the concentration of ions decreases, the solubility of the substance increases.
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Solid aluminum has a specific heat capacity of 0.90 J/ gxK. How many joules of heat are absorbed to raise the temperature of 24.0 grams of aluminum from 300. K to 350. K?
1. 22 J
2. 45 J
3. 1100 J
4. 1200 J
Answers
Answer:: 1100 j
Explanation:
Solid aluminum has a specific heat capacity of 0.90 J/ gK joules of heat are absorbed to raise the temperature of 24.0 grams of aluminum from 300. K to 350. K is 11.080 J
Heat is the transfer of kinetic energy from one medium or object to another from an energy source to a medium or object
Here given data is
Specific heat capacity = 0.90 J/gK
Temperature = 300. K to 350. K = 350 - 300 = 50 K
Mass = 24.0 grams
We have to calculate the heat = ?
Q =mCΔT
Q = 24.0 grams× 0.90×50 K
Q = 11.080 J
11.080 J heat are absorbed to raise the temperature
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How many joules are required to eat 5.25 g of titanium from 85.5 celsius to 132.5 celsius
Answers
The amount of energy required to eat 5.25 g of Titanium from 85.5 celsius to 132.5 celsius is 129 joules.
How do we calculate required heat?Absorbed or released amount of heat will be calculated by using the below formula as:
Q = mcΔT, where
m = mass of titanium = 5.25g
c = specific heat of titanium = 0.523 J/gram degree celsius
ΔT = change in temperature = 132.5 - 85.5 = 47 degree celsius
On putting these values on the above equation we get,
Q = (5.25)(0.523)(47) = 129 joules
Hence required heat is 129 joules.
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An gel ice pack getting cold after you put it in the freezer for an hour.
substance change
chemical change
elemental change
physical change
Answers
Answer:
physical change
.............
Which statement is true for photosynthesis? A) producers use it B) Consumers use it C) Scavengers use it D) Decomposers use it
Answers
Answer:
A) producers use it.
Explanation:
producers have to make their own food. so they use photosynthesis to make glucose for them to eat.
Answer: the answer is
Explanation: Bc is a very popular emoji
1. Write the balanced reaction of Al with CuCl2.
2. What is the limiting reagent if 0.5 g Al is reacted with 3.5 g CuCl2? (Reminder: CuCl2 is a dihydrate)
3. What is the theoretical yield of copper produced by the reaction above?
help plsss
Answers
1. \(\sf \: Al + CuCl_2 = AlCl_3 + Cu\)
\(\\\)
2. CuCl₂·2H₂O is limiting reactant.
Chemical reaction: 3CuCl₂·2H₂O + 2Al → 3Cu + 2AlCl₃ + 6H₂O. m(Al) = 0,5 g.
\(\\\)
3. The molar mass of copper is 63.546 grams per mole.
If we multiply everything out, we'll get 0.50722 grams of copper, which is our theoretical yield.
\(\\\)
\(\rule{300px}{.7ex}\)
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Clouds form from liquid water and ice True Or False ? IF U ANSWER QUICK I WILL GIVE U A BRAINLIEST
Answers
Answer:
False
Explanation:
from gas such as vaporization
how much energy is needed to convert 120g of ice at -35°C to steam at 150°C?
Answers
what is the molarity of kmno4 in a solution of 0.0897 g of kmno4 in 0.450 l of solution?
Answers
The molarity of KMnO4 in the given solution is approximately 0.00126 M. Molarity is a measure of the concentration of a solute in a solution. It represents the number of moles of the solute present per liter of the solution.
To determine the molarity of KMnO4 in the given solution, we need to first calculate the number of moles of KMnO4 using its mass and molar mass, and then divide it by the volume of the solution.
The molar mass of KMnO4 can be calculated as follows:
(1 × atomic mass of potassium) + (1 × atomic mass of manganese) + (4 × atomic mass of oxygen)
= (1 × 39.10 g/mol) + (1 × 54.94 g/mol) + (4 × 16.00 g/mol)
= 39.10 g/mol + 54.94 g/mol + 64.00 g/mol
= 158.04 g/mol
Now, let's calculate the number of moles of KMnO4:
Number of moles = Mass / Molar mass
Number of moles = 0.0897 g / 158.04 g/mol
Number of moles ≈ 0.000567 mol
Next, we need to calculate the molarity using the number of moles and the volume of the solution:
Molarity (M) = Number of moles / Volume (in liters)
Molarity = 0.000567 mol / 0.450 L
Molarity ≈ 0.00126 M
In this case, the molarity tells us the concentration of KMnO4 in moles per liter.
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Different between organic fertilizer and inorganic fertilizer
Answers
Organic fertilizers are made from mined rock minerals, and natural plant and animal materials. They include ingredients like manure, guano, dried and powdered blood, ground bone, crushed shells, finely pulverized fish, phosphate rock, and wood.
Inorganic fertilizer is synthetic, comprised of minerals and synthetic chemicals. Most of the minerals in inorganic fertilizer are mined from the earth, and balanced inorganic fertilizers are high in all three macronutrients and can contain ammonium sulfate, magnesium sulfate, and potassium chloride.
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Question:
What conclusions can you draw about your aspirin based on the FeCl3 test? Answer in terms of both the structure of aspirin and the purity of your product.
Purity of Products
A pure product can be obtained after synthesizing a compound using various techniques in the laboratory. A pure compound is one that does not contain any impurities. Some examples of purification techniques include recrystallization, distillation, chromatography, crystallization, and sublimation among others.
Answers
According to the FeCl3 test, aspirin contains salicylic acid's phenol.
In this instance, we consider the ease with which ferric chloride, FeCl3, interacts with phenol groups; in fact, this is one method for qualitatively demonstrating the existence of phenols in an organic sample.
Hydroxile groups (-OH) joined to an aromatic ring are referred to as phenol groups. A material with phenol functional groups will now become purple if FeCl3 is added to it. In this instance, the aspirin sample will not react whereas the salicylic acid will become purple for the aforementioned reason because aspirin lacks a phenol group in contrast to salicylic acid, which is used to create aspirin but really has a phenol group.
Due to the creation of an iron-containing compound or chelant, this purple hue is evident.
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How many g are in 3 mol of Iron II Carbonate FeCO3
Answers
Answer:
348 g FeCO3
Explanation:Use your 3 mol's and find the atomic number of Iron II and CO3 which i think is 115.854 so you multiply it by the 3 and that should give you your grams in FeCO3.
how to convert ethene to ethanal
Answers
Answer:
First convert ethene into C2H5Br by adding HBr. Then add aqueous KOH to form C2H5OH. Oxidize it by dilute H2SO4 and K2Cr2O7 to form CH3COOH. Add SOCl2 to form CH3COCl and reduction with Pd-baso4 and xylene.
Explanation:
I hope this helps you! :D
Electrons in Atoms
The (type here) of the atom is the most up-to-date model of the atom at this point.
Answers
generally speaking, the Bohr model encapsulates the modern understanding of the atom. This model is often depicted in artwork showing a central atomic nucleus and oval lines representing the orbits of the electrons.
Bohr
MAGNESIUM (Mg)
+FLUORINE (F) =
Answers
Answer:
MgF2 magnesium fluoride
Select true or false: melting an ionic solid always results in an increase in entropy.
Answers
The given statement is false because Melting an ionic solid does not always result in an increase in entropy. The change in entropy during the process of melting an ionic solid depends on various factors such as the size and complexity of the ions.
When an ionic solid melts, the crystal lattice breaks down, and the individual ions become mobile in the molten state. This transition from a rigid, ordered structure to a disordered, fluid state generally suggests an increase in entropy. However, there are cases where the entropy may not increase or may even decrease.
Factors that can influence the change in entropy during melting include:
Size and Complexity of Ions: If the ions in the solid are small and simple, the increase in entropy upon melting is generally higher compared to larger and more complex ions. Smaller ions allow for greater freedom of movement, resulting in a larger increase in entropy.
Lattice Structure: The specific arrangement of ions in the crystal lattice can affect the change in entropy. Some crystal structures have more freedom of movement for ions even in the solid state, resulting in lower entropy change upon melting.
Temperature Conditions: The temperature at which the melting occurs can also impact the change in entropy. At higher temperatures, the kinetic energy of the ions increases, leading to greater disorder and increased entropy.
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Give the correct name for the structure in the image.
Answers
Answer:
2,5,6-trimethyloctane
Explanation:
1) Count the number of carbons in the longest chain. If the structure contains a functional group (e.g. double bond, -OH), they have to be part of the chain that you're counting.
• The straight chain is the longest chain, and it contains 8 carbons
• Without the additional 3 methyl (-CH₃) substituents, it would be called octane (since it is an alkane)
2) Assign location numbers for the substituents, ensuring that they are the lowest possible numbers
• From left to right, we could name it as 2,5,6-trimethyloctane
• From right to left of the parent chain, it would be called 3,4,7-trimethyloctane
• Assigning from left to right gives us the lowest location numbers as the sum of the numbers is 13 instead of 14
• Remember to add 'tri' since we have 3 methyl groups
If a silver ion has 47 protons and 46 electrons, what is the overall charge on the ion?
A) 0
B) +1
C) -1
Answers
Which equation is balanced? O Mg3N₂ + H₂O → 3MgO + 2NH3 C3H8 +50₂ → H₂O + 3CO₂ Zn + 2HCl → ZnCl₂ + H₂ O 3H₂SO4 + 2Fe → Fe₂(SO4)3 + H₂
Answers
The equation that is balanced is:
3H₂SO4 + 2Fe → Fe₂(SO4)3 + H₂
An equation is considered balanced if it has the same number of atoms of each element on both sides of the equation. In this equation, the number of hydrogen (H), sulfur (S), oxygen (O), and iron (Fe) atoms are equal on both sides.
If there are no inequalities, the chemical equation is said to be balanced. A balanced equation obeys the law of conservation of mass. Here among the given options, the balanced equation is C₃H₈ +50₂ → 4H₂O + 3CO₂. The correct option is B.
What is a balanced equation?A chemical equation in which the number of atoms of reactants and products on both sides of the equation are balanced is defined as the balanced equation. The amount of reactants and products on both sides of the equation will be equal.
The numbers which are added to balance the chemical equation are called the coefficients. The coefficients are added in front of the formula of the chemical compounds.
The balanced equation for the given reaction is:
C₃H₈ +50₂ → 4H₂O + 3CO₂
Here the number of 'C', 'H' and 'O' on both sides of the equation are equal.
Thus the correct option is B.
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calculate the mass of 25,000 molecules of nitrogen gas. (1 mole = 6.02 × 1023 molecules) group of answer choices 7.00 × 105 g 5.81 × 10−19 g 5.38 × 1026 g 1.16 × 10−18 g
Answers
The mass of the 25,000 molecules of Nitrogen gas is found to be 0.0000017 g (1.7 x 10⁻⁶ g).
We must use the molar mass of nitrogen and the Avogadro's number to get the mass of 25,000 molecules of nitrogen gas.
Nitrogen (N₂) has a molar mass of 28 g/mol.
The number of particles in one mole of any substance determined by Avogadro is 6.02 x 10²³.
One nitrogen gas molecule's mass can be determined as follows:
Nitrogen's (N₂) molecular weight is 28 g/mol.
Nitrogen gas molecules total 25,000.
Nitrogen gas moles equal (25,000 molecules) / (6.02 x 10²³ molecules/mol)
(Num. of moles) x = mass of nitrogen gas (molar mass)
[(25,000 molecules) / (6.02 x 10²³ molecules/mol)] is a formula for the mass of nitrogen gas. x (28 g/mol)
Nitrogen gas mass = 0.00000117 g
Therefore, 25,000 nitrogen gas molecules have a mass of about 0.00000117 g.
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4
What type of bond will form between Carbon and Fluorine atoms?*
Answers
Answer:
covalent bond
Explanation:
they allow donation of electrons
1. According to the equation, what mass of hydrogen fluoride is necessary to produce 2.3 g of sodium fluoride?
HF + NaNO3 -> HNO3 + NaF
Answers
Answer:
1.096g
Explanation:
You must know the atomic mass of Hydrogen, Fluorine, and Sodium before you can start:
Hydrogen: 1.008g/mol
Fluorine: 18.99g/mol
Sodium: 22.98g/mol
Next, find the composition percentage of NaF
22.98 + 18.99 = 41.97
Fluorine is 18.99/41.97 =45.25%
Sodium is 100-45.25 = 54.75%
Ultimately we want to know about HF so find how much F is in 2.3g: 2.3 * 0.4525 = 1.041g
Find comp. percentage of HF
18.99+1.008 = 19.998; H/total F/total
Hydrogen 5.041%
Fluorine 94.959%
Laws of conservation of say we have 1.041g of fluorine in our HF. We know 1.041 is 94.959% of the mass of HF so do some simple math to find the remaining: 1.041/0.94959 = 1.096g
Briefly account for the following relative values:
(c) Li boils more than 1100°C higher than it melts.
Answers
There is a very high energy requirement for the conversion of Li to gas at boiling point.
Why does boils more than 1100°C higher than it melts?We have to recall that the intermolecular forces hold a substances together in a particular state of matter. Matter exists in three states;
SolidLiquid GasGiven the fact that the transitioning of Li from liquid to gas implies the breaking off of all the metallic interaction that holds the substance together, a lot of energy is required. This high energy requirement is confirmed by the fact that Li boils more than 1100°C higher than it melts.
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how many grams of sodium chlorate are required to generate 50.0 g sodium chloride according to the following equation: 2naclo3→2nacl 3o2
Answers
To generate 50.0 g of sodium chloride according to the given chemical equation, we need 91.12 g of sodium chlorate.
To calculate the grams of sodium chlorate required to generate 50.0 g of sodium chloride, we first need to use the balanced chemical equation to determine the molar ratio of sodium chlorate to sodium chloride. From the equation 2NaClO3 → 2NaCl + 3O2, we can see that for every 2 moles of sodium chlorate, 2 moles of sodium chloride are produced.
The molar mass of sodium chloride is 58.44 g/mol, and so 50.0 g of sodium chloride corresponds to 50.0 g / 58.44 g/mol = 0.8557 moles.
Since the molar ratio of sodium chlorate to sodium chloride is 2:2, or simply 1:1, we know that we need 0.8557 moles of sodium chlorate to generate 50.0 g of sodium chloride.
The molar mass of sodium chlorate is 106.44 g/mol, and so to convert moles to grams, we can simply multiply the number of moles by the molar mass. Therefore, we need:
0.8557 moles x 106.44 g/mol = 91.12 g of sodium chlorate.
Therefore, to generate 50.0 g of sodium chloride according to the given chemical equation, we need 91.12 g of sodium chlorate.
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How is STEAM DISTILLATION carried out? What are the steps?
Answers
Explanation:
Steam distillation is carried out by passing dry steam through the plant material whereby the steam volatile compounds are volatilized, condensed and collected in receivers. Steam distillation has been in use for essential oil extraction for many years.
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Which of the following is an example of a learned response?
A.
A bird avoids moths that make it sick after eating one.
B.
A person's leg moves when a doctor taps his or her leg with a mallet.
C.
A plant turns to follow the sun during the day.
D.
An adult salmon is able to return to the river where it hatched.
Answers
Explanation: learned response - a reaction that has been acquired by learning. (a bodily process occurring due to the effect of some antecedent stimulus or agent)
a small negatively charged particle formed when an atom gains one or more electrons is called a(an) _____
Answers
Answer: Anion
Explanation:
Malonate is a competitive inhibitor of succinate dehydrogenase. If malonate is added to a mitochondrial preparation that is oxidizing pyruvate as a substrate, which compound would you expect to decrease in concentration?.
Answers
Fumarate is expected to decrease in concentration, If malonate is added to a mitochondrial preparation that is oxidizing pyruvate as a substrate.
Only succinate dehydrogenase is a membrane-bound TCA cycle enzyme; all other enzymes are dispersed throughout the matrix of the mitochondria. This enzyme participates in both the electron transport chain and the TCA. With the conversion of FAD to FADH2, the succinate dehydrogenase enzyme in TCA transforms succinate into fumarate. The reaction's cofactor and electron acceptor is FAD.
Succinate dehydrogenase is an enzyme complex anchored to the inner mitochondrial membrane that facilitates the Krebs cycle's oxidation of succinate to fumarate and the electron transport chain's concomitant reduction of ubiquinone to ubiquinol.
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What is the different between stereotyping someone and judging them? paragraph in length please
Answers
Answer:
Stereotyping provides humans with the ability to quickly sort out patterns in a randomly diverse world filled with people of every size, shape, gender, age, color, and sexual orientation. And it’s just a quick first pass, nothing more