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rosijanka [135]
3 years ago
10

Look at the data in the table below. Which measurement has five significant figures?

Chemistry
1 answer:
laila [671]3 years ago
7 0
D. 750 pretty sure it’s the answer
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Which layer of the atmosphere is between the stratosphere and the thermosphere
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3 years ago
my tens digit is 2 more than my hundreds digit and my ones digit is 1 more than my tens digit. my Hundreds digit is 5. what numb
Marta_Voda [28]
578 is definitely the answer
6 0
3 years ago
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Correct answer will be marked brainliest!
tigry1 [53]

Answer:

0.0660 moles

Explanation:

Change torr to atm and change celcius to kelvin.

(1.35L)(.987 atm)/(0.08206 L atm /mol k)(290k)

= 0.0660 mol

4 0
3 years ago
Given the following data, determine the order of reaction with respect to H2.
alex41 [277]

Answer:

First-order with respect to hydrogen.

Explanation:

Hello!

In this case, considering that the rate law of this reaction can be expressed via:

r=k*p_{H_2}^m*p_{ICl}^n

If we want to know m, the order of reaction with respect to hydrogen, we need to relate the experiments 1 and 3 in order to get rid of the pressure of ICl:

\frac{r_1}{r_3} =\frac{k*p_{H_2,1}^m*p_{ICl,1}^n}{k*p_{H_2,3}^m*p_{ICl,3}^n}

Thus, we plug in the given rates, and pressures to get:

\frac{1.34}{0.266} =\frac{k*250^m*325^n}{k*50^m*325^n}

So we can cancel wout k and 325^n:

\frac{1.34}{0.266} =\frac{250^m}{50^m}

Next we solve for m, the order of reaction with respect to hydrogen:

5.04 =5^m\\\\log(5.04)=m*log(5)\\\\m=\frac{log(5.04)}{log(5)} \\\\m=1.0

It means it is first-order with respect to hydrogen.

Regards!

7 0
3 years ago
Which is true about reaction rates?
Nataliya [291]

Answer:

Reaction rates are not related to spontaneity

Explanation:

A spontaneous reaction is one which occurs on its own or on some activation. Non spontaneous reactions are those which do not occur on their own and thus constant energy must be supplied to make them happen.

Reaction rate is dependent on the amount of reactants and the activation energy and not on the spontaneity of the reaction. Reactions with high activation energy are slow and reactions with low activation energy are fast.

7 0
3 years ago
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