Chemistry - aluminum - A piece of aluminum with a mass of 234 grams is heated to a temperature of 231 degrees Celcius and then is dropped into 123 mL of 21 degrees celcius water. If no energy is lost to the surroundings, w ...
K values - I have the following problem where the gas phase decomposition of HI into H2 and I2is found to have Ea = 182 kj/mol. The rate constant at 700 degrees Celcius is 1.57 X 10 -3 M/s. I have to find the ...
Mole Fraction - A certain mixture of He and Ne in a 356cm^3 bulb weighs 0.1480 grams and is at 20.0 degrees Celcius and 748 torr. Find the mole fraction of He present.
general chemistry - find energy, volume, mass, molarity, moles etc. - I need to see the steps involved in solving these problems please so I can understand it.
benzene is an organic solvent with the formula C6H6. it boils at 80.1 degrees celcius and melts at 5.5 degr ...
This deals with calorimeter and heat capacity. - If 2.500 g of Mg is burned in a constant volume calorimeter with a heat capacity of 1.10 kJ/degrees Celsius containing 1.500 L of water at 23.50 degrees Celsius and releases 37.33 kJ of heat, what is ...