You want to quickly set up a temporary water bath in your lab with a volume of 10.0 L and a temperature of 37.0 \deg C. You only have hot water from your hot water faucet (temperature = 51.8 \deg C) and cold water from your cold water faucet (temperature = 22.0\deg C). What volume of hot water (in liters) must you mix with cold water to get 10.0 L of 37.0 \deg C water? Assume the specific heat of the water is 4.184 J/g⚫K and that the water has a density of 1.00 g/mL.

In lab, a student was given a hydrated version of Ba(OH)2 as the unknown. The initial mass of the hydrated salt was 0.848 g. The student heated the crucible for 10 minutes with the cover slightly ajar. After cooling, the dried salt weighed 0.767 g. Based on these results, answer the following questions. The chemical formula for this hydrate is: Ba(OH)2⋅Ba(OH)2⋅ ___H2O The IUPAC name for this hydrate is:

A standard crank ice cream maker uses a mixture of ice water and salt to cool ice cream mix to the point of freezing. If ice cream freezes at 27 degrees Fahrenheit, what is the minimum concentration of salt needed to make ice cream?

Automobiles are often implicated as contributors to global warming because they are a source of the greenhouse gas CO2. How many pounds of CO2 would your car release in a year if it was driven 110. miles per week? Gasoline is a complex mixture of hydrocarbons. In your calculations, assume that gasoline is octane (molecular formula C8H18) and that it is burned completely to CO2 and H2O in the engine of your car. Also assume that the car averages 27.3 miles per gallon and that the density of octane is 0.703 g cm-3.