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10699143Hi I need help on question 7 and 8. I've gotten my whole test

wrong and I'd appreciate some explanation because clearly when I thought it was doing it right I wasn't. Thank you

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Quiz: HW 13
An Ideal Gaseous Reaction Occurs At A Constant Pre... I...
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Question 7
0.2 pts
Calorimetry can also be used to determine nutritional Calories, which are actually kilocalories. One (1) nutritional
Calorie = 1000 calories, and 1 calorie = 4.184 J.
When 1.0 g of a snack cake is combusted in a constant-volume bomb calorimeter with a heat capacity (including
its water) of 10.0 kJ/C, the temperature of the calorimeter rises by 1.46C. How many nutritional calories
(Calories) are in one serving (28 g) of this snack cake?
Enter your answer to three significant figures in units of Calories.
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Question 8
0.2 pts
A common laboratory reaction is the neutralization of an acid with a base. When 41.0 mL of 0.500
M HCI at 25.0C is added to 56.8 ml of 0.500 M NaOH at 25.0C in a coffee cup calorimeter (with a .
negligible heat capacity), the temperature of the mixture rises to 28.2.C. What is the heat of
reaction per mole of NaCl (in kJ/mol)? Assume the mixture has a specific heat capacity of 4.18
J/(g.K) and that the densities of the reactant solutions are both 1.07 g/mL.
Enter your answer to three significant figures in units of kJ/mol.
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Question 9
0.2 pts
1
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