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28 maj 2020 · Determine the number of moles of the compound and determine the number of moles of each type of atom in each of the following: (a) 2.12 g of potassium bromide, KBr. (b) 0.1488 g of phosphoric acid, H 3 PO 4. (c) 23 kg of calcium carbonate, CaCO 3. (d) 78.452 g of aluminum sulfate, Al 2 (SO 4) 3.
- Solution Composition (Worksheet) - Chemistry LibreTexts
Work in groups on these problems. You should try to answer...
- Solution Composition (Worksheet) - Chemistry LibreTexts
Worksheet: Mole Calculations & Percent Composition. A. Mole Calculations. You will need a periodic table to look up molecular weights. Do each type of calculation until you feel that you could do it without looking at notes. If you are very comfortable with a problem, skip down to harder ones. The answers will be on the web. 1.
Calculate the normality of Cu2+ in a solution that is made by dissolving 8.77 g of Au(NO 3 ) 3 in enough water to make 175 mL of solution when copper metal is added to the solution.
Percent Composition Worksheet - Solutions. Find the percent compositions of all of the elements in the following compounds: 1) CuBr2 Cu: 28.4%.
This quiz helps you practice determining mass ratios, percent compositions and empirical formulas of a variety of chemical compounds.
Chemistry: Molar Mass and Percentage Composition. Calculate the molar masses and percentage composition of each of the following compounds. Show your work and always include units. Ca3P2. Ca(OH) 2. Na2SO4. CaSO4. (NH4) 2SO4. Zn3(PO4) 2.
Work in groups on these problems. You should try to answer the questions without referring to your textbook. If you get stuck, try asking another group for help.