19 days ago

Under standard conditions, a given reaction is endergonic (i.e., ΔG >0). Which of the following can render this reaction favo

rable: using the product immediately in the next step, maintaining a high starting-material concentration, or keeping a high product concentration? View Available Hint(s) Under standard conditions, a given reaction is endergonic (i.e., ΔG >0). Which of the following can render this reaction favorable: using the product immediately in the next step, maintaining a high starting-material concentration, or keeping a high product concentration? maintaining a high starting-material concentration keeping a high product concentration using the product immediately in the next step and maintaining a high starting-material concentration using the product immediately in the next step

Chemistry

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The formula is Na₂CO₃·2H₂O. To find the integer x representing the amount of crystallization water, we analyze the given mass before and after heating.

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3 months ago

What volume of co2 gas at 645 torr and 800. k could be produced by the decomposition of 45.0 g of caco3? caco3(s) → cao(s) + co2

KiRa [2933]

In the reaction: <span>caco3(s) → cao(s) + co2(g), it is evident that
1 mol (which is 100 g) of CaCO3 yields 1 mol (which is 44 g) of CO2
Now, the molarity of CaCO3 present in the reaction system is
</span>= $\frac{weight of CaCO3 (g)}{gram molecular weight}$
= $\frac{45}{100}$ = 0.45 mol

Thus, 0.45 mol of CaCO3 leads to the formation of 0.45 mol of CO2.

According to the ideal gas equation, we have PV = nRT
V = $\frac{nRT}{P}$ .
Considering P = 645 torr = 0.8487 atm (because 1 atm = 760 torr)
In that case, V = $\frac{0.45 X 0.08206 X 800}{0.8487}$

= 34.8 l

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2 months ago