What would have been the effect on the formula weight you calculated for your unknown if some of your unknown had not dissolved prior to the addition of Mg to the solution? (Think of the effect on the recovered mass and how this would alter your calculations.)

What volume in mL of 0.300 M NaF would be required to make a 0.0800 M solution of NaF when diluted to 250.0 mL with water? O of 1 point earned

C Determine the moles of sodium carbonate that need to be taken from the concentrated solution. (To avoid introducing rounding errors on intermediate calculations, enter your answer to four significant figures.) Moles from the concentrated solution = Show/Hide Help Submit mol Concentrated solution conc. Diluted solution conc. Diluted solution volume Diluted solution moles 2.45 M 0.250 M 100.0 mL 0.02500 mol

You may want to reference (Pages 306 - 308) Section 9.5 while completing this problem. Part A Determine the volume, in milliliters, required to prepare each of the following diluted solutions. 23.0 mL of a 0.250 M KNO3 solution from a 6.50 M KNO3 solution Express your answer with the appropriate units. HÁ Value Units Submit Request Answer Part B 28.0 mL of a 2.50 M H2SO4 solution from a(n) 12.4 M H2SO4 solution Express your answer with the appropriate units. HA ? Value Units