In a coffee-cup calorimeter, 1.60 g of NH4NO3 is mixed with 75.0 g of water at an initial temperature of 25.00oC. After dissolution of the salt, the final temperature of the calorimeter content is 23.34 oC. Assuming the solution has a heat capacity of 4.18 J/goC and assuming no heat loss to the calorimeter, calculate the energy absorbed (kJ/mole NH4NO3) by dissolving NH4NO3.

0.66y = 0.9x + 0.48 if y has a value of 108.45 what is the value of x?

The minerals found in bones are deposited by living cells called

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced.be sure your answer has the correct number of significant digits.