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kow [346]
2 years ago
12

What is the height on human

Chemistry
1 answer:
scoundrel [369]2 years ago
5 0

Answer:

5 feet 6 inches is the optimal height for a human

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The rate constant for a certain reaction is measured at two different temperatures:
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Answer: The activation energy Ea for this reaction is 22689.8 J/mol

Explanation:

According to Arrhenius equation with change in temperature, the formula is as follows.

ln \frac{k_{2}}{k_{1}} = \frac{-E_{a}}{R}[\frac{1}{T_{2}} - \frac{1}{T_{1}}]

k_1 = rate constant at temperature T_1 = 2.3\times 10^8

k_2 = rate constant at temperature T_2 = 4.8\times 10^8

E_a= activation energy = ?

R= gas constant = 8.314 J/kmol

T_1 = temperature = 280.0^0C=(273+280)=553K

T_2 = temperature = 376.0^0C=(273+376)=649K

Putting in the values ::

ln \frac{4.8\times 10^8}{2.3\times 10^8} = \frac{-E_{a}}{8.314}[\frac{1}{649} - \frac{1}{553}]

E_a=22689.8J/mol

The activation energy Ea for this reaction is 22689.8 J/mol

3 0
3 years ago
Consider the balanced equation:
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Answer:

well hello there ms gabby I might not know the answer but you could text me on Ig or sc

ig:wavy_sean5

sc:despeechless5

ur really pretty

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3 years ago
Other than exercises, what other factors do you think influences breathe/minute? <br>why?​
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Explanation:

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NaOH  + H2SO4 =
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2NaOH+H_2SO_4\Rightarrow\ Na_2SO_4+2H_2O\\&#10;NaOH+HNO_3\Rightarrow\ NaNO_3+H_2O\\&#10;Cu(OH)_2+2HCl\Rightarrow\ CuCl_2+2H_2O\\&#10;Cu(OH)2+H_2SO_4\Rightarrow\ CuSO_4+2H_2O\\&#10;Cu(OH)_2+2HNO_3\Rightarrow\ Cu(NO_3)_2+2H_2O
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What is a magnetic reversal
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