What factor affects the rate of a chemical reaction?
a) collision frequency
b) fraction of collisions with sufficient energy
c) orientation of molecules
d) all of these

Answer:

\(\huge \fbox \pink {A}\huge \fbox \green {n}\huge \fbox \blue {s}\huge \fbox \red {w}\huge \fbox \purple {e}\huge \fbox \orange {r}\)

A. Skin

Explanation:

Skin unlike teeth, bones & shells is fragile & get decomposed easily under the soil.

Answer:

um a I think because when you look at dinosaur you don't see their skin anymore just like the bones and teeth

The minerals effervesce (produces a bubbling, fizzing reaction) in hydrochloric acid is calcite. The correct option is D, calcite.

Calcite is a mineral that is very hard, and highly reactive.

It is present in many colors, white, yellow, orange, red, green, and blue.

In Ancient Egypt, calcite was used to carve many things, such as bast, alabaster, etc.

Thus, the correct option is D, calcite.

Learn more about calcite

https://brainly.com/question/16855546

#SPJ1

The subsequent The following chemical equations are balanced:

Chemical equations serve to represent the transformation of reactants into products. For instance, iron sulfide is created when iron (Fe) and sulfur (S) combine (FeS). S(s) + Fe(s) = FeS (s) The + symbol denotes an iron-sulfur reaction.

A chemical equation can be used to condense the details of a chemical process. A chemical equation's generic form is: Products Reactants. In a chemical equation, the reactants are the chemicals that are present before the action begins, and the product are the materials that are created during the reaction.

2 AlBr3 + 3 K2(SO4) → 6 KBr + Al2(SO4)3

2 O2 + CH4 → 2 CO2 + 2 H2O

2 Na3(PO4) + 3 CaCl2 → 6 NaCl + Ca3(PO4)2

2 Al + 6 HCl → 3 H2 + 2 AlCl3

3 F2 + N2 → 2 NF3

2 NH3 + H2SO4 → (NH4)2SO4

C3H8 + 5 O2 → 3 CO2 + 4 H2O

To know more about Chemical equation visit:

https://brainly.com/question/30087623

#SPJ1

Answer:0.58 atm

Explanation:see attached photo

Answer:

\(P=0.583atm\)

Explanation:

Hello,

In this case, by using the ideal gas equation:

\(PV=nRT\)

We can compute the pressure as shown below, considering the given data and absolute temperature:

\(P=\frac{nRT}{V}=\frac{0.325mol*0.082\frac{atm*L}{mol*K}*(35+273)K}{14.08L}\\ \\P=0.583atm\)

Best regards.

Answer: time

Explanation: time

Answer:

The formula for density is D = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre..

The density equation is density equals mass per unit volume or D = M / V. The key to solving for density is to report the proper mass and volume units. If you are asked to give density in different units from the mass and volume, you will need to convert them..

The five steps for determining density can be expressed in simple form as follows: measure the mass of the container, measure the volume of the liquid, measure the combined mass of the liquid and the container, determine the mass of the liquid alone and divide the mass by the volume..

Explanation:

I hope it helps..

Just correct me if I'm wrong, okay?(;ŏ﹏ŏ)

But... Your Welcome!!

(ꏿ﹏ꏿ;)(◍•ᴗ•◍)

Answer:

102/46Pd

Explanation:

The mass numbers and the atomic numbers must balance on both sides of the equation. The product side shows a beta particle, indicating that this is a beta decay equation.

Beta decay doesn’t change the mass number of the original atom, so the mass number of the atom on the product side will be the same as the mass number of the atom on the reactant side, 102.

The sum of the atomic numbers on the product side needs to be 45, which is the atomic number of the reactant side. So, the atom on the product side must have a mass number of 46.

Use the periodic table to find the element to be palladium (102/46Pd).

654 grams of Zn metal will completely react with 730 grams of HCl

The balanced chemical equation for this reaction is:
Zn + 2HCl → ZnCl2 + H2

From the equation, we can see that for every 1 mole of Zn, 2 moles of HCl are required for a complete reaction. This means the mole ratio of Zn to HCl is 1:2.

To determine the number of moles of HCl used, we need to convert the given mass of HCl to moles. The molar mass of HCl is 36.5 g/mol, so:

730 g HCl x (1 mol HCl/36.5 g HCl) = 20 moles HCl

Using the mole ratio from the balanced equation, we can determine the number of moles of Zn required:

20 moles HCl x (1 mol Zn/2 mol HCl) = 10 moles Zn

Finally, we can convert the number of moles of Zn to grams using its molar mass of 65.4 g/mol:

10 moles Zn x (65.4 g Zn/mol) = 654 grams of Zn

Therefore, 654 grams of Zn metal will completely react with 730 grams of HCl to produce ZnCl2 and H2.

To know more about Balanced Equation:

https://brainly.com/question/11904811

#SPJ11

The characteristics and the type of molecular bond they describe:

1. Bonds found in Halite (between Na⁺ and Cl⁻): Ionic bond

2. Bonds found between Si and O in the Si-O tetrahedron: Covalent bond

3. Bonds inside the water molecule (between the H and O): Covalent bond

4. Bonds that exist between two water molecules: Hydrogen bond

5. Strongest bond type: Covalent bond

6. Weakest bond type: Van der Waals bond

7. Bonds that are used by water to dissolve salt: Ionic bond

The ionic bond is a type of molecular bond found in halite (between Na⁺ and Cl⁻). The Si-O tetrahedron is held together by a covalent bond. The bond inside the water molecule (between the H and O) is also a covalent bond. The hydrogen bond is the type of bond that exists between two water molecules. The covalent bond is the strongest bond type, while the van der Waals bond is the weakest bond type. Water uses the ionic bond to dissolve the salt.

Learn more about bonds: https://brainly.com/question/32306693

#SPJ11

Answer:

3

Explanation:

there are 3 significant figures in this number because of 6.01

Using Henry's law equation we can see that the final pressure of the gas is 2.12 atm

To determine the final pressure, we can use Henry's law equation, it is written as:

S₁/P₁ = S₂/P₂

Where the variables in the equation are:

S₁ = Initial solubility

P₁ = Initial pressure

S₂ = Final solubility

P₂ = Final pressure

We are given:

S₁ = 0.95 g/L

P₁ = 2.8 atm

S₂ = 0.72 g/L

Let's solve for P₂:

S₁/P₁ = S₂/P₂

P₂ = (S₂ * P₁) / S₁

P₂ = (0.72 g/L * 2.8 atm) / 0.95 g/L =  2.12 atm

Learn more about solubility:

https://brainly.com/question/23946616

#SPJ1

The concentration of [H3O+] in the solution is approximately 3.16 x 10^(-5) mol/L or M (molar)

The pH of a solution is the degree of measurement of hydronium ions, [H3O+], in the solution. The pH scale is logarithmic, hence the formula applicable here is:

pH = -log[H3O+]

To find the concentration of [H3O+], we have:

[H3O+] = 10^(-pH)

Substituting the given pH value of 4.52 into the equation, we are able to calculate the concentration of hydronium ions:

[H3O+] = 10^(-4.52)

[H3O+] ≈ 3.16 x 10^(-5) mol/L

Therefore, the concentration of [H3O+] ions in the solution is about 3.16x 10^(-5) mol/L or M (molar).

For more information on the pH of a solution:

https://brainly.com/question/26424076

https://brainly.com/question/12609985

Answer:the dimmer the light is,the more sleepy the students become

Explanation:

The moles of KMnO₄ needed to form 0.886 moles of carbon dioxide is 2.42 moles.

Balanced chemical reaction

14KMnO₄ + 4C₃H₅(OH)₃ → 7K₂CO₃ + 7Mn₂O₃ + 5CO₂ + 16H₂O.

Given the question:

n(CO₂) = 0.886 mol

From the chemical reaction:  n(CO₂) : n(KMnO₄) = 5 : 14

n(KMnO₄) = [n(CO₂) x 14] ÷ 5

n(KMnO₄) = [0.866 mol x 14] ÷ 5

n(KMnO₄) = 12.124 ÷ 5

n(KMnO₄) =2.42 mol

So, moles of KMnO₄ are consumed to form 0.886 moles of carbon dioxide is 2.42 mol.

Learn more about the number of moles of KMNO₄ for carbon dioxide consumed at https://brainly.com/question/28744804

#SPJ4

the pressure of the system when all the stopcocks are opened, assuming that the temperature remains constants 532.4 torr

for H₂, P₁ = 532 tor, V₁ = 0·5 Lt, V₂ = 2·5 L+, P₂ = Pu₂ = ? using P, V₁ = P₂ V2, 582-X 0.5 = p x 2.5, Ph2 = 106.4form. Now, according to botton's law total. pressure of the system is the summation. & partial pressure of all individual gases. P total = pn2 + pn2 + ph2 = (106 +220 + 106·4)= 532.4 torr. Pressure is defined as force per unit area of surface; the SI pressure measurement is the pascal (Pa), which is defined as one newton per square metre (N/m2). An object's pressure is proportional to the applied force it expends and inversely related to the area over which the force is exerted. In chemistry, the temperature of a substance is defined as the average velocity of all of its atoms or molecules. A substance's particles do not all have same kinetic energy. The kinetic energy of the particles can be depicted by a distribution at any given time.

Learn more about pressure here:

https://brainly.com/question/15265703

#SPJ4

1. Deprotonation of butanal to yield enolate 1: In this step, the hydrogen (H) atom present on the carbon alpha to the carbonyl group in butanal is removed and replaced with a base such as sodium hydride (NaH) or potassium hydroxide (KOH).

Butanal is an organic compound belonging to the aldehyde family of chemicals. It is composed of a single carbon atom bonded to an oxygen atom and two hydrogen atoms, and is most commonly found in its gaseous form.

This results in a conjugate base, known as an enolate anion, which is stabilized by resonance.

2. Reaction of enolate I with butanal to yield addition 2:

In this step, the enolate anion formed in the previous step reacts with butanal to form an adduct. This reaction is an aldol condensation and the product is an α,β-unsaturated aldehyde.

3. Protonation of addition to yield intermediate 3:

In this step, the proton from the α-carbon of the aldehyde is replaced by acid. This results in an intermediate ketone in the form of a tertiary alcohol.

4. Dehydration of intermediate 3 to yield condensation 4:

In this step, the tertiary alcohol is treated with a strong base such as sodium methoxide (NaOMe), which removes the proton from the α-carbon of the ketone and results in an α,β-unsaturated ketone.

5. Catalytic hydrogenation of condensation 4 to yield the final product:

In this step, the α,β-unsaturated ketone is treated with a catalyst such as palladium on charcoal and hydrogen gas. This results in the reduction of the double bond and the formation of the desired product, ethyl-1-hexanol.

The structure of addition 2 is shown below:

To learn more about butanal

https://brainly.com/question/9943463

#SPJ4

Answer:

compression

Explanation:

Hope it helps!!!!!!!!!!

Answer:

PV=nRT

0.20×v = 0.070×8.00

0.20V= 0.56

0.20v÷0.20v = 0.56÷0.20v

= 2.8

Answer:

\(C_A=0.144M\)

Explanation:

Hello,

In this case, given the rate constant, we infer this is about a second order reaction, whose equation is:

\(\frac{dC_A}{dt}=kC_A^2\)

Thus, by integration we obtain:

\(\frac{1}{C_A}= \frac{1}{C_A_0}+kt\)

Hence, we solve for the final concentration after 0.385 s:

\(\frac{1}{C_A}= \frac{1}{0.155M}+\frac{1.308}{Ms} *0.385s=\frac{6.955}{M}\\ \\C_A=\frac{M}{6.955} \\\\C_A=0.144M\)

Best regards.

Answer:

47,070 joules are needed.

Answer:

47,070 J are needed to increase the temperature of 150 g of water from 25 degrees C to its boiling point of 100 degrees C.

Explanation:

25 degrees Celsius is 298 degrees Kelvin; 100 degrees Celsius, 373 degrees Kelvin. = 150 g x 4.184 J/g/K x (373 - 298) K = 47,070 J. Thus, 47,070 J are needed to increase the temperature of 150 g of water from 25 degrees C to its boiling point of 100 degrees C.

Answer:

matter is substance that has mass.

Answer: Mass and Volume?

Explanation:

All of the statements are true

Answer:

Yes.

Explanation:

Wasting household water does not ultimately remove that water from the global water cycle, but it does remove it from the portion of the water cycle that is readily accessible and usable by humans. Also, "wasting" water wastes the energy and resources that were used to process and deliver the water.

Answer:

I feel like there should be more parts to this question but I think it depends on how you got your water. If you waste water after you got it from a local stream yourself, you wasted your body energy but no real electricity of any kind. If the water is processed and filtered and you end up wasting it, I guess it counts as energy being wasted too? Because the sole purpose was to bring you clean water but you didn't utilize it

The molar mass of the unknown gas is approximately 4.28 g/mol.

What is molar mass?

The molar mass is the mass of a substance in grams that is equal to one mole of the substance. The mole is a unit of measurement in chemistry that represents the number of entities in a substance, such as atoms, molecules, or ions. One mole of any substance contains Avogadro's number of entities, which is approximately 6.022 x 10^23.

The rate of diffusion of a gas is inversely proportional to its square root of molar mass. This relationship is known as Graham's Law of Diffusion.

Given that CO2 diffuses 3.2 times faster than the unknown gas, we can set up the following equation:

(Diffusion rate of CO2) / (Diffusion rate of unknown gas) = 3.2

(1/√(molar mass of CO2)) / (1/√(molar mass of unknown gas)) = 3.2

Squaring both sides:

(1/molar mass of CO2) / (1/molar mass of unknown gas) = 3.2^2 = 10.24

Therefore,

(1/molar mass of unknown gas) = (1/molar mass of CO2) / 10.24

Given that the molar mass of CO2 is 44.01 g/mol,

(1/molar mass of unknown gas) = (1/44.01) / 10.24

Solving for molar mass of the unknown gas:

molar mass of unknown gas = 44.01 / 10.24 = 4.28 g/mol

So, the molar mass of the unknown gas is approximately 4.28 g/mol.

To learn more about molar mass:

https://brainly.com/question/21334167

#SPJ4

1. Calculate the moles of hydrazine. 2. Use the balanced chemical equation to determine the stoichiometry. 3. Calculate the theoretical yield of water vapor. 4. Compare the actual yield with the theoretical yield.

To find the percent yield, we need to compare the actual yield with the theoretical yield. The percent yield is calculated by comparing the actual yield (65.0 L of water vapor) with the theoretical yield, which is calculated based on the amount of hydrazine used in the reaction.

The balanced chemical equation allows us to determine the stoichiometry, and by using the molar mass of hydrazine, we can calculate the moles of hydrazine used. From there, we can calculate the moles of water vapor produced, assuming it follows the same stoichiometry as hydrazine.

Finally, by comparing the actual and theoretical yields, we can calculate the percent yield.

To know more about hydrazine visit.

https://brainly.com/question/2795143

#SPJ11

To determine the order of the reaction with respect to each reactant, we must compare how the reaction rate changes when its concentration changes.

We have in experiment one the same concentration of reactants and a speed equal to 8.0x10^-4 mol/(L.s).

Now, in the second experiment, the concentration of BrO3 doubles, and the rest of the reagents remain the same. The speed is also doubled since 8.0x10^-4 x 2 = 1.6 x 10^-3.

The same happens with Br-, in the third experiment. The rate doubles as the Br concentration doubles.

So for these two reactants, the rate of reaction will be first-order, since as the concentration increases the rate increases in the same proportion.

Now, for H+ we have that by doubling the concentration the rate quadruples. This means that the reaction order is second order. When changing the concentration, the speed changes in order equal to 2

Answer:

the order of reaction will be:

Respect BrO3-: First order

Respect Br-: First order

Respect H+: Second order

Answer:

1.00784 u

Explanation:

Answer:

1.00784 u

Explanation:

hydrogen atomm