How many kilo joules of heat are absorbed
How many kilojoules of heat are absorbed when 7.20g of MgO(s) is decomposed into Mg(s) and O2 (g) at constant pressure?
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Translate the following word equations into balanced chemical equations and explain how the equations represent what happens in grid spaces a and g.
The term vapor pressure almost always means the equilibrium vapor pressure. What pysical arrangement is needed to measure vapor pressure?
What is the vapor pressure depression of a solution of 135 g of CaCl2 in 225 g of water? Use molar masses with at least as many significant figures as the data give.
you purchase a cup of coffee, but, at 98.4 degrees C, it is too hot. You add 45.5 g of ice that is -2.2 degrees C to the 248ml of coffee. What is the final temperature of the coffee? (assume the heat capacity and density of the coffee are the same
125g of sodium oxide and carbon dioxide gas. if the reaction occurs at 784 torr and 32.5 C. What volume of carbon dioxide gas is produced?
The density of liquid oxygen at its boiling point is 1.14, and its heat of vaporization is 213. How much energy in joules would be absorbed by 2.0 of liquid oxygen as it vaporized?
The extract and the insoluble residue both heated to dryness, could you determine the amounts of NaCl ,NH4Cl ,and SiO2 originally present? Why or why not?
Combustion analysis of 0.395 g sample of unknown compound produces 1.072 g CO2 and 0.307 g H2O. Analysis also indicates the presence the presence of 0.068 g N in the sample.
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