3 years ago

Which statement about gravity is true?

Chemistry

1 answer:

Alecsey [184]3 years ago

3 0

Answer:

statement about property is not true

Explanation:

if you think the answer is Grace Mark me as brain a list

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What element has two electrons in the outer most shell

RUDIKE [14]

Answer:

Helium

Explanation:

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3 years ago

Consider this reaction: →2NH3g+N2g3H2g At a certain temperature it obeys this rate law: rate =2.11·M−1s−1NH32 Suppose a vessel c

enot [183]

Answer: It takes 5.89 s for the concentration of $NH_3$ to decrease by 88.0%.

Explanation:

$2NH_3(g)\rightarrow N_2(g)+3H_2(g)$

As the units of rate constant is $M^{-1}s^{-1}$ , the kinetics must be second order.

Integrated rate law for second order kinetics is given by:

$\frac{1}{a}=kt+\frac{1}{a_0}$

$a_0$ = initiaal concentration = 0.590 M

a= concentration left after time t = $0.590-\frac{88}{100}\times 0.590=0.0708M$

$\frac{1}{0.0708}=2.11\times t+\frac{1}{0.590}$

$t=5.89s$

Thus it takes 5.89 seconds for the concentration of $NH_3$ to decrease by 88.0%.

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3 years ago

Which of these steps should always be followed for effective problem solving? a. buying a larger quantity of material than estim

Nesterboy [21]

The best steps that should always be used for effective problem solving would be C. Developing a plan and then implementing the plan.

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4 years ago

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Which of the following is NOT a renewable energy source?

n200080 [17]

Answer:

A. Nuclear Energy

Explanation:

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Which of the following is true about the relationship between the energy gap (DE) between the spin states for a 1H nucleus and t

Alecsey [184]

Answer:

Explanation:

They are directly proportional. That's what the relationship states

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3 years ago