15.0 grams of NH4Cl is added to 80.0 grams of water in a calorimeter cup. The temperature of the solution goes from an initial temp of 22.0 ºC to 17.5 ºC. What is the ΔH in kcal/mol? Be sure to include a + or - sign.

What are the major products produced in the combustion of c10h22 under the following conditions? write balanced chemical equations for each. a. an excess of oxygen b. a slightly limited oxygen supply c. a very limited supply of oxygen d. the compound is burned in air

How many grams of aluminum will there be in 98g of al2o3?

Draw a line graph showing the relationship between temperature in kelvin as a function of kinetic energy.