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Lesechka [4]
3 years ago
14

What term expresses the ratio of moles of reactants and products according to the coefficients in the balanced chemical equation

? A) mole ratio B) reactant ratio C) product ratio D) yield ratio E) none of the above
Chemistry
1 answer:
bogdanovich [222]3 years ago
6 0

Answer:

A) mole ratio

Explanation:            

<em>A mole ratio</em>, also known as a mole-to-mole ratio, <em>is ​the ratio between the amounts in moles of one reactant/product to the moles of the other reactant/product. </em>This ratio is determined considering the coefficients in a balanced chemical equation. This ratio is used in chemical problems as a conversion factor between the compounds involved in the reaction.

I hope you find this information useful and interesting! Good luck!

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What mass of CaCO3 is required to react completely with 0.56 L of HCl?
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The balanced equation for the above reaction is as follows;
CaCO₃ + 2HCl ----> CaCl₂ + H₂O + CO₂
stoichiometry of CaCO₃ to HCl is 1:2
molar volume states that 1 mol of any gas occupies a volume of 22.4 L at STP.
volume of 22.4 L occupied by 1 mol
therefore 0.56 L occupied by - 0.56 L / 22.4 L/mol = 0.025 mol
number of HCl moles reacted - 0.025 mol
2 mol of HCl reacts with 1 mol of CaCO₃
therefore 0.025 mol reacts with - 0.025/2 = 0.0125 mol 
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Suppose that a certain biologically important reaction is quite slow at physiological temperature (37 oC) in the absence of a ca
Oksi-84 [34.3K]

Answer:

30 kJ

Explanation:

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k=Aexp(-Ea/RT)\\

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taking natural log of both side

ln k = ln A - Ea/RT

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Therefore,

ln\frac{k_2}{k_1} =\frac{Ea_1-Ea_2}{RT}

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4 0
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