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QveST [7]
3 years ago
10

1

Chemistry
1 answer:
Otrada [13]3 years ago
3 0

Answer:

A. the iron atoms are gaining kinetic energy

Explanation:

when the iron melted and solidifies it loses potential energy and changes to kinetic energy

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Convert 31.9 g of N2 to moles
pashok25 [27]

Answer: 1.14mol

Nitrogen molar mass=14g/mol

N2 molar mass=14*2=28g/mol

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The rate of decay of a chemical involved in a reaction that is second order (bimolecular) in one reactant A is given by: = k [AJ
anyanavicka [17]

Explanation:

2A\rightarrow products

According to mass action,

\textrm{rate}=-\dfrac{\Delta[\textrm A]}{2\Delta t}=k[\textrm A]^2

Where, k is the rate constant

So,

\dfrac{d[A]}{dt}=-k[A]^2

Integrating and applying limits,

\int_{[A_t]}^{[A_0]}\frac{d[A]}{[A]^2}=-\int_{0}^{t}kdt

we get:

\dfrac{1}{[A]} = \dfrac{1}{[A]_0}+kt

Where,

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[A_0] is the initial concentration

Half life is the time when the concentration reduced to half.

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t_{1/2}=\dfrac{1}{k[A_o]}

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Some animals only have ___ cell.
DaniilM [7]
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What is the mass of 9.45 mol of aluminum oxide (Al2O3)?
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