Barium metal was quantitatively precipitated from a 1.52 g sample of BaCl2-2H2O. The mass of the barium that was collected was 0.844 g. 1. Calculate the experimental mass percent of barium in the sample. 2. Calculate the theoretical mass percent of barium in BaC2-2H2O.

A 35 mL of a Na3PO4 aqueous solution and 35 mL of a BaCl2 aqueous solution were combined to form 0.520 g of Ba3(PO4)2 precipitate. If reagent tests demonstrated that Na3PO4 was the limiting reactant in the precipitation reaction, calculate the concentration of the Na3PO4 solution.

ABS plastic is a polymer consisting of three monomer units: acrylonitrile (C₃H₃N), butadiene (C₄H₆), and styrene (C₈H₈). A sample of ABS plastic contains 13.7% N by mass. It took 1.56 g of Br₂ to react completely with a 2.00 g sample of ABS plastic. Bromine reacts 1:1 (by moles) with the butadiene units in the polymer and nothing else, so bromination is a method for determining the quantity of butadiene in the polymer. What is the percent by mass of styrene in the polymer?

8. Calculate the mass, in grams, of 0.433 mol of CO2.

3. What mass of NaCl can be produced from 0.55 mol Cl2 in the following reaction? 2 Naa + Cle) → 2 NaCle) d. 88 g a. 0.55 g b. 1.1 g с. 64 g С.

An impure sample of table salt (NaCl) that was dissolved in water and treated with silver nitrate to form silver chloride. If the initial sample had a mass of 1.741 g and the final mass of the AgCl was found to be 4.084 g, what is the mass percent of NaCl in the impure sample?

A mass of 2.50 g of hydrated copper (II) sulfate is placed in a crucible and heated. On heating, 1.59 g of white anhydrous copper (II) sulfate is left behind. Determine the percentage of water in copper (II) sulfate.

A 0.9 g sample of a mixture of KCl and MgCl2 is treated with excess AgNO3(aq). If 2.37 grams of AgCl(s) are obtained, then what is the percentage by mass of KCl in the original mixture? Your answer must be accurate to two significant digits. Keep several extra digits in your calculations and round off only at the end. Do not include the percent sign (%) as part of your answer.   Molar masses (in g mol−1): KCl, 74.55 MgCl2, 95.21 AgCl, 143.35

ABS plastic is a polymer consisting of three monomer units: acrylonitrile (C₃H₃N), butadiene (C₄H₆), and styrene (C₈H₈). A sample of ABS plastic contains 11.9% N by mass. It took 1.56 g of Br₂ to react completely with a 2.00 g sample of ABS plastic. Bromine reacts 1:1 (by moles) with the butadiene units in the polymer and nothing else, so bromination is a method for determining the quantity of butadiene in the polymer. What is the percent by mass of styrene in the polymer?

In a certain experiment two solutions are prepared and mixed. Solution 1 is prepared by dissolving 5.00 g of KNO3 and 5.00 g of BaCl2 in enough water to make a homogeneous solution. Solution 2 is prepared by dissolving 5.00 g of AgNO3 in enough water to make a homogeneous solution. A white color precipitate is formed upon mixing the two solutions. Identify the formula of the product and calculate the theoretical yield in grams.