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2 years ago

According to collision and transition state theories, what is the importance of activation energy?

1 answer:

3 0

According to the collision theory, the following criteria must be met in order for a chemical reaction to occur: Molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break.

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Find the mass of 3.02 mol Cl2.<br> Answer in units of g.

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the answer is 70.906 g/mol

Explanation:

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An archaeologist graduate student found a leg bone of a large animal during the building of a new science building. The bone had

Vlad [161]

Answer : The time passed in years is $2.74\times 10^2\text{ years}$

Explanation :

Half-life of carbon-14 = 5730 years

First we have to calculate the rate constant, we use the formula :

$k=\frac{0.693}{t_{1/2}}$

$k=\frac{0.693}{5730\text{ years}}$

$k=1.21\times 10^{-4}\text{ years}^{-1}$

Now we have to calculate the time passed.

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant = $1.21\times 10^{-4}\text{ years}^{-1}$

t = time passed by the sample = ?

a = initial amount of the reactant disintegrate = 15.3

a - x = amount left after decay process = 14.8

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$t=\frac{2.303}{1.21\times 10^{-4}}\log\frac{15.3}{14.8}$

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2 years ago

0.820 L has a mass of 2.56kg what is the density of this liquid in kg/L

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Density ρ= $\frac{m}{v}$

= $\frac{2.56 kg}{0.820 L} \\=3.121kg/L$

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In the reaction: NH4+ + H2O ⮀ NH3 + H3O+ water is acting as a(n)

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Answer:

see explaination

Explanation:

Please kindly check attachment for the step by step solution of the given problem

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