A student wants to measure the heat of neutralization reaction. To do this they mixed in a coffer cup calorimeter 58.0 mL of 0.50M HCl solution and 42.0 mL of 0.60M NaOH solution both at 22.0oC initially. They then continued to measure the temperature of the mixture for 10 minutes. What is the SURROUNDING of this reaction?

Explanation:

Determine the molar masses to the nearest whole number.

NaoH

First, use the molar masses of N and O to determine the molar mass of N2O5.

2 mol N 14.0 g N

1 mol N

× + 5 mol O 16.0 g O

1 mol O

× -1 = 108.0 g mol ⋅

Next, use the molar mass to convert the given moles into mass.

3.24 mol N O2 5 × 2 5

2 5

108.0 g N O

1 mol N O 2 5 = 350. g N O

b) How many moles of N2O5 are present in a 12.7-g sample of N2O5?

Use the molar mass determined in Part A to convert from mass to moles.

12.7 g N O2 5 × 2 5

2 5

1 mol N O

108.0 g N O 2 5

calculate how many grams of ammonia can be produced from 4.21 grams of

n2 + 3h2 = 2nh3

my answer:

25.0g n2 x (1 mol/ 28.0gn2) x (2 mol nh3/ 1 mol n2) x (17.0g nh3/ 1 molnh3) = 30.36g n2

25.0g h2 x (1 mol h2/ 2.00g h2) x (2 mol nh3/ 3 mol h2) x (17.0g nh3/ 1 mol nh3) = 141.67g h2

lr = n2

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explanation:

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