If 4.99 g of CuSO4 (molar mass 159.61 g/mol) is dissolved in water to make a 0.250 M solution of CuSO4, what is the volume of the solution in milliliters ? Show all your work for full credit. Use the correct number of significant figures.

Consider the reaction: 4HCl(aq) + MnO2(s) → MnCl2(aq) + 2H2O(l) + Cl2(g) A sample of 39.1 g MnO2 (molar mass = 86.94 g/mol) is added to a solution containing 49.3 g HCl (molar mass = 36.46 g/mol). a) How many moles of Cl2 can be obtained from MnO2? b) How many moles of Cl2 can be obtained from HCl? c) How many moles of Cl2 can be obtained in this reaction? d) How many grams of Cl2 (molar mass = 70.91 g/mol) can be obtained in this reaction? e) What is the limiting reactant? f) If the yield of the reaction is 77.1%, what is the actual yield of Cl2? Show all your work for full credit. Use the correct number of significant figures.

An antacid tablet contains NaHCO3. What mass of this compound is required to neutralize 175 mL of 2.75 M HCl? NaHCO3(aq) + HCl(aq) → NaCl(aq) + CO2(g) + H2O(l)

Calculate the molar mass of a gas if 0.475 g of this gas occupies 0.250 L at 0.955 atm and 297 K. Show all your work for full credit. Use the correct number of significant figures.

Calculate the molar mass of a gas if 0.183 g of this gas occupies 0.280 L at 0.930 atm and 295 K. Show all your work for full credit. Use the correct number of significant figures.

A sample of 0.125 mol of NO2 occupies a volume of 2.15 L. What will the volume be if the number of moles of NO2 is increased to 0.725 mol, with no change in temperature or pressure ?

How many moles gaseous BF3 are contained in a 4.3410 L bulb at 515.0 oC if the pressure is 1.220 atm?

An oxygen sample of 1.62 L is at 0.911 atm and 30.0°C.How many moles of oxygen are in the sample?

A sample of 0.525 mol of SO2 occupies a volume of 2.25 L. What will the volume be if the number of moles of SO2 is increased to 0.825 mol, with no change in temperature or pressure ?

Select the statement that best describes the relationship between gas pressure and volume (Boyle’s law).