Issue: Calculating the heat evolved per mole of sodium hydroxide (NaOH) when the amount of NaOH is doubled. Context: Original calculation: 4.00 g of NaOH releases 3762 J of heat. New scenario: 8.00 g of NaOH is used. Figure out how much heat is evolved per mol.

Name: Solved: Issue: Calculating the heat evolved per mole of sodium hydroxide (NaOH) when the amount of NaOH is doubled. Context: Original calculation: 4.00 g of NaOH releases 3762 J of heat. New scenario: 8.00 g of NaOH is used. Figure out how much heat is evolved per mol. - MathMaster
Brand: MathMaster
Rating: 4.9 (191 reviews)

191

likes

955 views

Answer to a math question Issue: Calculating the heat evolved per mole of sodium hydroxide (NaOH) when the amount of NaOH is doubled. Context: Original calculation: 4.00 g of NaOH releases 3762 J of heat. New scenario: 8.00 g of NaOH is used. Figure out how much heat is evolved per mol.

$Expert avatar$

Cristian

4.7

118 Answers

\text{Given heat per 4.00 g of NaOH:} \\ q_{4 \text{g}} = 3762 \, \text{J}

\text{New heat for 8.00 g of NaOH:} \\q_{8 \text{g}} = 2 \times q_{4 \text{g}} = 2 \times 3762 = 7524 \, \text{J}

\text{Molar mass of } \text{NaOH}: \\M = 23.00 + 16.00 + 1.00 = 40.00 \, \text{g/mol}

\text{Heat evolved per mole of NaOH:} \\q_{\text{mol}} = \frac{7524 \, \text{J}}{8.00 \, \text{g}} \times 40.00 \, \text{g/mol} = 752.4 \, \text{J/g} \times 40.00 \, \text{g/mol} = 37620 \, \text{J/mol}

Frequently asked questions (FAQs)

What is the length of the hypotenuse if one leg is 6 and the other leg is 8?

What is the volume of a rectangular solid with length (L) = 5 units, width (W) = 3 units, and height (H) = 4 units?

What is the measure in degrees of an angle that measures π/4 radians?

New questions in Mathematics

1 + 1

How much volume of water in MegaLiters (ML) is required to irrigate 30 Hectare crop area with depth of 20mm?

Two fire lookouts are 12.5 km apart on a north-south line. The northern fire lookout sights a fire 20° south of East at the same time as the southern fire lookout spots it at 60° East of North. How far is the fire from the Southern lookout? Round your answer to the nearest tenth of a kilometer

a ferry travels 1/6 of the distance between two ports in 3/7 hour. The ferry travels at a constant rate. At this rate, what fraction of the distance between the two ports can the ferry travel in one hour.

-6n+5=-13

The actual length of an object is 1.3 m . If the blueprint uses a scale of 1 : 12 , what is the length of the line on the drawing?

(2b) to the 1/4th power. Write the expression in radical form.