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A 2.5-gram sample of French fries is placed in a calorimeter with 500.0 g of water at an initial temperature of 21°C. After combustion of the French fries, the water has a temperature of 48°C. What is the caloric value (kcal/g) of the French fries? Specific heat of water is 1.00 cal/oC.

A catalyst is ________.

Which statement is false about the following reaction? Pb + I2  → PbI2

What is the mass of 0.057 moles of magnesium chlorate, Mg(ClO3)2?

What are the differences between a cation and an anion?

Give the following details about: HBr Total number of electrons: [electrons] Name: [name] Number of sigma bonds: [sigma] Number of pi bonds: [pi]

NH3 Molecular Shape: [shape] Hybridization of the central atom [hybridization] write in normal characters sp, sp2, sp3 Name: [name] Number of sigma bonds: [sigma] Number of pi bonds: [pi]

Upload your work. It is allowed to use your phone to upload your work to your exam.   Work not posted to the exam will not be accepted. You must complete the upload of your work before time ends (3 hours total). It is easier to save all of your work in one file, either as a .pdf or .doc. Don’t use .heic files! Turn off the Live feature of your iPhone and this will save your pictures as .jpg instead of .heic. Save your file with your last name in the file name. Completing this process is worth points if completed correctly.

CO2 Draw the Lewis structure on a separate piece of paper. Show your work and label the question number clearly. You will upload a photo of your response at the end of the test.

O2 Molecular Shape: [shape] Name: [name] Remember — diatomic molecules are named simply as the element’s name. Number of sigma bonds: [sigma] Number of pi bonds: [pi]