Hydrate Find  the % of water for Na2SO4            7H2O

What is the percent composition of water in the compound magne- sium sulfate heptahydrate, MgSO4 •7H₂O₂ A 7.3% B C D 24.8% 48.8% 51.2%

What is the mass percent of ethanol (C2H5OH) if 495 moles of ethanol is added to 3 kg of water?

What volume (in L) of 1.5 M Na₂CO₃ would be required to obtain 0.65 moles of Na⁺ ions?

How many liters of a 2.00 M solution of sodium chloride are needed to have 1.00 g of radium chloride if the GFW is 58.44 g ? We must first convert 1.00 g into moles so that we can use the concentration To calculate the moles we cancel out liters                                                    Blank 1. Fill in the blank, read surrounding text. mol (  Blank 2. Fill in the blank, read surrounding text. g)(–––––––––––––––––––––––) =  Blank 3. Fill in the blank, read surrounding text. mol                                                        Blank 4. Fill in the blank, read surrounding text. g Then we convert moles into liters using  Blank 5. Fill in the blank, read surrounding text. as a conversion factor                                                        Blank 6. Fill in the blank, read surrounding text. L (  Blank 7. Fill in the blank, read surrounding text. mol)(–––––––––––––––––––––––) =  Blank 8. Fill in the blank, read surrounding text. L…

What is the molarity of a 5% (m/m) solution of HNO; has a density of 1.1 g/mL? 0.50 M O 0.11 M 0.87 M O 0.79 O 0.05 M

How many mL of 0.02 M Na2S2O3 contain this number of moles?

How many moles of H2SO4 are there in 117.4 mL of a stock solution that reads 0.763M ?

What is the minimum amount (in mL) of 8.00 M H₂SO4 needed to neutralize 10.0 mL of 4.00 M NaOH? Hint. Write the balanced reaction. Do not include units or use scientific notation on your final answer (on the blank).