Please Help 40 Points!! During an experiment, the percent yield of calcium chloride from a reaction was 85.22%. Theoretically, the expected amount should have been 113 grams. What was the actual yield from this reaction? CaCO3 + HCl → CaCl2 + CO2 + H2O
96.3 grams
99.0 grams
113 grams
121 grams

What mass of carbon dioxide is produced from the complete combustion of 4.50×10−3 g of methane?

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution. calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

Idont understand it 1.what is the boiling point of a solution of 675 grams of ethylene glycol (c2h6o2) in 2.50 liters of water?