Question Get Answer

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

attachment_10012019.png
File
Edit
View History
Bookmarks Window Help
ufl.instructure.com
C
Search Textbook Solutions | Chegg.com
Quiz: HW 13
An Ideal Gaseous Reaction Occurs At A Constant Pre... I...
D
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.
D
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.
D
Question 9
0.2 pts
1
Q
Subject: Chemistry, Science

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question
Let our 24/7 Chemistry tutors help you get unstuck! Ask your first question.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes