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Consider the following reaction: C3H8 + O2 → CO2 + H2O If 10.0 g of C3H8 were allowed to react with 10.0 g of O2, how many grams of CO2 would be produced?

Silver nitrate and aluminum chloride react with each other by exchanging anions: 3 AgNO3 (aq) + AlCl3 (aq)

In which of the following ions are the bond lengths expected to be the shortest?

A sample of CaCO3(s) absorbs 40.3 J of heat, causing its temperatures to increase from 20.8 ºC to 27.3 ºC.  If the specific heat of CaCO3 (s) is 0.82 J/gK, what is the mass of the sample (in grams)?

Which of the following compounds contains pure covalent bonds?

The age of the earth has been estimated by scientists as 4.54 billion years (4.54 x 109 yr). If there was an imaginary unit of “Brigg” that was equal to 1,971 minutes, how old is the earth in Briggs? (you may disregard leap years in your calculation)

Which compound below has a different empirical formula than the other three?

A piece of pure aluminum foil is cut to dimensions of 5.00 cm x 8.00 cm and its mass is measured as 0.282 g.  Given the density of Al is 2.70 g /cm3, and the diameter of a single Al atom is 2.86 x 10-8 cm, how many Al atoms span the thickness of the foil?

Which of these elements is paired incorrectly with its chemical symbol?

What will happen to the pressure of a gas if the volume is increased by a factor of 4 while holding the temperature constant?