Calculate the molar mass for each of the following (2 pts):
a. ZnSO4
b. C7H6O2
c. K2CrO4
Calculate the molar mass for each of the following (2 pts): a. ZnSO4 b. C7H6O2 c....
The active ingredient in a zinc nutritional supplement is ZnSO4 .7H2O (molar mass 287.58 g/mol). Ten zinc tablets containing a mix of the active ingredient and an inactive filler were ground and mixed together thoroughly. The total mass of these 10 tablets was 10.600 g. A 1.980 g sample of the finely ground tablets was dissolved in an acidic solution. The solution tion of (NH4)PO to the s the precipitation of ZnNH,PO4. The precipitate was filtered and dried, then ignited...
2. Consider HC2H30, and NaC2H302. Calculate the molar mass of HC2H302. Calculate the molar mass of NaC2H302. (2 pts) 3. Calculate the moles HC2H302 in 2.102 g HC2H2O2. Calculate the moles NaCzH302 in 2.771 g NaC2H302 (2 pts)
Calculate the molar solubility of PbCrO4 in the following substances. Part B 1.3×10−3 M K2CrO4 Express your answer using two significant figures.
13. Calculate the effusion rate of the following gases. (4.0 pts, Gas Molar mass (g/mol) AAAAAAAAAAAA the following gases. (4.0 pts, show working out) Effusion rate (a) a MM SO2 NO CO2 CHA yyyyyyyyyyyyyyyy
calculate the molar mass for each of the following gases given the STP density: (a) oxygen, 1.43 g/L (b) phosphine, 1.52 g/L (c) nitrous oxide, 1.97 g/L (d) Freon-12, 5.40 g/L
Which of the following compounds is insoluble in water: a. Zn(NO3)2 b. Ag2SO4 c. ZnSO4 d. Na3PO4
a) Calculate the molar mass of CH14. 1.2 b) Calculate the number of moles of hexane in 0.774 g of C&H14. c) Calculate the mass in grams of 0.0406 moles of hexane.
Calculate the molar mass of each compound. CH g/mol C,H,O, g/mol
Molar Mass Determination by Freezing Point Depression Calculate and enter the freezing point depression of a solution of 57.6 g ethylene glycol (C2H602) in 734 g H20. Kffor H20 is 1.86 °C kg/mol. °C -2.53 1 homework pts Submit Answer Incorrect. Tries 3/5 Previous Tries A solution which contains 71.9 g of an unknown molecular compound in 363 g of water freezes at -3.85°C. What is the molar mass of the unknown? g/mol 1homework pts Submit Answer Tries 0/5 Molar...
Calculate the percent composition of carbon in each of the following molecular formulas: The molar mass of carbon is 12.01 g / mol, fluorine is 19.00 g / mol, hydrogen is 1.01 g / mol and oxygen is 16.00 g / mol. A. C2F4 (MM = 100.02g / mol) B. C2H4O2 (MM = 60.02g/mol)