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hammer [34]
2 years ago
8

The reaction 3NO ---> N2O + NO2 is found to obey the rate law Rate = k[NO]^2^. If the first half-life of the reaction is foun

d to be 2.0 s, what is the length of the fourth half-life.
Chemistry
1 answer:
agasfer [191]2 years ago
6 0

Answer:

8.0 s.

Explanation:

Hello,

In this, case, by knowing that the half-life time allows as to compute the rate constant in terms of the initial concentration as shown below:

k=\frac{1}{[NO]_0*t_{/2}} = \frac{1}{[NO]_0*2.0}=\frac{1}{2[NO]_0}

Therefore, the fourth half-life time implies that the concentration is 1/16 the initial one, therefore:

t_{1/2}^{4th}=\frac{1}{k/16}= 8.0s

That is analyzed considering that if the initial concentration is 1M the first half-time is at 0.5M, the second at 0.25M, the third at 0.125M and the fourth at 0.0625M which is 16 times smaller than 1M.

Best regards.

You might be interested in
7.32 moles of hydrogen reacts with 48.97 grams of nitrogen, how many moles of ammonia is produced?
faust18 [17]

3.5 moles of ammonia (NH₃) are produced

Explanation:

We have the following chemical reaction where hydrogen (H₂) reacts with nitrogen (N₂) to produce ammonia (NH₃):

3 H₂ + N₂ → 2 NH₃

number of moles = mass / molecular weight

number of moles of N₂ = 48.97 / 28 = 1.75 moles

We see from the chemical reaction that 1 mole of N₂ will react with 3 moles of H₂, so 1.75 moles of nitrogen will react with 3 × 1.75 = 5.25 moles of H₂. We have 7.32 moles of H₂, a quantity more of what is needed, so the limiting reactant is N₂.

Knowing this we devise the following reasoning:

if         1 mole of N₂ produces 2 moles of NH₃

then   1.75 moles of N₂ produces X moles of NH₃

X = (1.75 × 2) / 1 = 3.5 moles of NH₃

Learn more about:

limiting reactant

brainly.com/question/7144022

#learnwithBrainly

7 0
3 years ago
Hey do you guys have any ideas for a science fair project
Ierofanga [76]
You could do how different liquids affect plant growth. Take 3 SAME plant seeds and plant them in the SAME environment. For plant A use juice, for plant B, use milk, and for planting C, use coffee.
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3 years ago
Select the reactants of photosynthesis
chubhunter [2.5K]

Answer:

glucose and oxygen are the reactants of photosynthesis

Explanation:

hope it helps you

8 0
2 years ago
Read 2 more answers
What is the answer if u know please answer
forsale [732]
An atom having 52 protons and 54 electrons would have an atomic number of 52 and a net charge of -2. This element would be 52 Te 2-, or choice A.
7 0
3 years ago
Type the temperatures in Kelvin) in the left column
docker41 [41]

Answer: the data appear to be ( linear )

The line of best fit is v= 0.003 t+ 0.003

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3 years ago
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