2 years ago

Based on the kinetic theory, which statement is true?

Chemistry

1 answer:

Citrus2011 [14]2 years ago

5 0

Answer:

(D) The particles of matter are arranged in different ways for the different states.

Explanation:

The particles of matter arrange differently based on the different states

They don't stay the same for each state. They have to change depending on certain things.

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inessss [21]

Radioactive material obeys 1st order decay kinetics,
For 1st order reaction, we have
k = $\frac{2.303}{t}Xlog \frac{\text{initial conc.}}{\text{final conc.}}$
where, k = rate constant of reaction

Given: Initial conc. 100, Final conc. = 6.25, t = 18.9 hours

∴ k = $\frac{2.303}{18.9} X log \frac{100}{6.25}$ = 0.1467 hours^(-1)

Now, for 1st order reactions: half life = $\frac{0.693}{k} = \frac{0.693}{0.1467}$ = 4.723 hours.

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2 years ago

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igor_vitrenko [27]

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Rhenium (Re) is made up of 37.4% 185Re and 62.6% 187Re. The atomic mass of 185Re is 184.953 amu. The atomic mass of 187Re is 186

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Hope this answers the question. Have a nice day.</span>

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