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3 years ago

If the price of gasoline is $2.99 per U.S. gallon, what is the cost per liter? (1 L = 1.06 qt)

Chemistry

2 answers:

sasho [114]3 years ago

8 0

Answer:

About $0.79

Explanation:

There is about 3.78541 liters in 1 gallon. So, you would divide $2.99 by 3.78541 to make it the amount per liter. 2.99/3.78541= 0.78987481. That number rounded to the nearest cent is $0.79. Hope this helps! :)

AfilCa [17]3 years ago

5 0

Answr: it is 22

Explanation: i

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Read 2 more answers

The standard molar enthalpy of formation of NH3(g) is -45.9 kJ/mol. What is the enthalpy change if 9.51 g N2(g) and 1.96 g H2(g)

Vladimir [108]

Answer:

$\Delta H=-29.7kJ$

Explanation:

Hello!

In this case, since the undergoing chemical reaction is:

$N_2+3H_2\rightarrow 2NH_3$

We first need to identify the limiting reactant given the masses of nitrogen and hydrogen:

$n_{NH_3}^{by\ H_2}=1.96gH_2*\frac{1molH_2}{2.02gH_2}*\frac{2molNH_3}{3molH_2}=0.647molNH_3\\\\ n_{NH_3}^{by\ N_2}=9.51gN_2*\frac{1molN_2}{28.02gN_2}*\frac{2molNH_3}{1molN_2}=0.679molNH_3$

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$\Delta H=0.647molNH_3*\frac{-45.9kJ}{1molNH_3}\\\\ \Delta H=-29.7kJ$

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