3. Chemical Reactions

What is the mass percent of bromine in the compound NaBr?

What is the percent by mass of chlorine in FeCl_3?

What is the percent by mass of sulfur in sulfur dioxide (SO_2)?

If you have a solution containing 120 g of NaCl dissolved in 480 g of water, what is the mass percent of NaCl in the solution?

What is the mass percent of carbon in oxalic acid (C2H2O4)?

What is the mass percent of oxygen (O) in carbon dioxide (CO_2)? Provide your answer to two decimal places.

Which formula is used to calculate the percent by mass of an element in a compound?

Which of the following best describes the percent composition (mass percent) of a compound?

What is the mass percent of sulfur in SO_2?

What is the approximate percent by mass of potassium (K) in potassium bicarbonate (KHCO3)?

What is the mass percent of Na in NaF? Provide your answer to two decimal places.

An alloy used in aerospace applications contains 15.0 g of titanium in a 120.0 g sample. What is the mass percent of titanium in the alloy?

What is the mass percent of sodium (Na) and chlorine (Cl) in NaCl?

A solution is prepared by dissolving 17.5 g of MgCl_2 in 85.0 g of H_2O. What is the mass percent of MgCl_2 in the solution?

What is the mass percent of iron in iron(III) chloride (FeCl_3)?