Which of the following is an endothermic reaction?

a. burning wood

b. an explosion

c. burning a match

d. the cooling of an ice pack

What is the specific heat of a substance if 1560 cal are required to raise temperature of a 312 g substance by 15 degrees celsius?

The Lewis structure of HCl has a double-bond. TRUE FALSE

Which electrolyte is stronger, NaOH or Ca (OH) 2? Why?

With pressure, volume, and temperature being known values, the ideal gas law can be used to

When something occurs or repeats at regular intervals it is called

If you wanted to study the science of describing, naming, and classifying organisms, what would you study?

The specific heat of silver is 0.234 j / (g·c). calculate the amount of energy that is needed to raise the temperature of 175 g of silver from 22.5°c to 40.0°c.

Gypsum is hydrated calcium sulfate. a 4.89 g sample of this hydrate was heated. after the water was removed, 3.87 g anhydrous calcium sulfate remained. determine the formula of this hydrate and name the compound.

A chemical reaction produces CO2 (g). If 44 g is produced at 1.0 atm and 25°C, what volume will the gas occupy? (Assume that CO2 behaves as an ideal gas under these conditions.

What is the smallest carbohydrate called?