Which of the following is included in the measure of U.S. GDP?

A catalyst ______. (select all that apply.) multiple select question. is depleted in a chemical reaction undergoes no permanent

Keith_Richards [23]

The statements that are true regarding a catalyst are as follows:

It undergoes no permanent change during a reaction

It does not participate in a chemical reaction

What is a catalyst?

A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process.

A catalyst increases the rate at which a chemical reaction occurs by decreasing the activation energy of the reaction.

Since a catalyst is not used up in the reaction, the following statement applies:

It undergoes no permanent change during a reaction

It does not participate in a chemical reaction

Learn more about catalyst at:

#SPJ1

6 0

2 years ago

An ideal gas originally at 0.85 atm and 66°C was allowed to expand until its final volume, pressure and temperature were 94.0mL,

xeze [42]

Answer: The original volume in liters was 0.0707L

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1$ = initial pressure of gas = 0.85 atm

$P_2$ = final pressure of gas = 456 mm Hg = 0.60 atm (760mmHg=1atm)

$V_1$ = initial volume of gas = ?

$V_2$ = final volume of gas = 94.0 ml

$T_1$ = initial temperature of gas = $66^oC=273+66=339K$

$T_2$ = final temperature of gas = $113^oF=318K$ $(32^0F=273K)$

Now put all the given values in the above equation, we get:

$\frac{0.85\times V_1}{339}=\frac{0.60\times 94.0}{318}$

$V_1=70.7ml=0.0707L$ (1L=1000ml)

Thus the original volume in liters was 0.0707L

8 0

3 years ago

A green laser pointer emits light with a wavelength of 536 nm. What is the frequency of this light?

anastassius [24]

Answer:

Your answer is 5.63 × 10^14 Hz

We know the value of the speed of light and we are given the wavelength. All we have to do is rearrange the equation to solve for the frequency:

frequency: v = c/ λ

Now just plug in the given values:

v = 3.00 × 10 ^ 8 / 530 × 10^-9

v = 5.66 × 10 ^ 14 Hz

I hope this helps you.

3 0

3 years ago

The proposed mechanism for a reaction is 1. ClO-(aq) + H2O(l) => HClO(aq) + OH-(aq) SLOW 2. I-(aq) + HClO(aq) => HIO(aq) +

HACTEHA [7]

Answer:

The correct answer is option A.

Explanation:

Step 1 : Slow

$ClO^-(aq) + H_2O(l)\rightarrow HClO(aq) + OH^-(aq)$

Step 2: Fast

$I^-(aq) + HClO(aq)\rightarrow HIO(aq) + Cl^-(aq)$

Step 3: Fast

$OH^-(aq) + HIO(aq)\rightarrow H_2O(l) + IO^-(aq)$

When there is a recation which is taking place in a more that single steps than the rate of the reaction is determined by the slowest step occurring in the reaction mechanism.

So, according to question step 1 is slow step which means that rate of the reaction will be :

$R=k[ClO^-][H_2O]$

8 0

3 years ago

What is the molecular formula of a hydrocarbon with M+ = 108? (Write the formula with no subscripts, e.g. C4H10.)

Sidana [21]

Explanation:

M+=108 is way of representing molecular formula of a compound indicating simple numbers of each type of atom in a molecule and there is no information about the structure.

Here it given the molecule is hydrocarbon with 8 carbon atom and 12 hydrogen atom. Thus the compound is C8H12.

C8H12 has one ring and two double bonds.

6 0

4 years ago