Answer Happy

X DIMENSIONAL ANALYSIS, STANDARDS OF MEASUREMENT, CHEMICAL COMPOSITION & STOICHIOMETRY 3. Using the average atomic masses given inside the front cover of the text, calculate the indicated quantities. a. The number of mol of cobalt in 2.75 g of cobalt X c. The number of cobalt atoms in 0.00103 g of cobalt The mues 5.00 1021 cobalt 4. What mass of cobalt contains the same number of atoms as 57.0 g of fluorine?
DIMENSIONAL ANALYSIS, STANDARDS OF MEASUREMENT, CHEMICAL COMPOSITION & STOICHIOMETRY Molar Mass - Read Section 3.1 of the OpenStax text, "Chemistry". 6. Give the formula and calculate the molar mass for each of the following substances. a. Nitrogen dioxide b. Dinitrogen monoxide c. Xenon tetrafluoride d. Sodium hypochlorite 7. Calculate the number of moles of the indicated substance in each of the following. a. 4.26 x 10 g of sodium dihydrogen phosphate -3 b. 521 g copper (1) chloride c. 8.76 g of strontium fluoride
DIMENSIONAL ANALYSIS, STANDARDS OF MEASUREMENT, CHEMICAL COMPOSITION & STOICHIOMETRY 8. Calculate the mass in grams of each of the following samples. a. 1.27 mmol of carbon dioxide b. 4.12 x 10³ mol of nitrogen trichloride c. 0.00451 mol of ammonium nitrate 9. Calculate the number of molecules present in each of the following samples. a. 6.37 mol of carbon monoxide b. 2.62 x 106 g of water c. 5.23 g of benzene, C6H6
AL ANALYSIS, STANDARDS OF MEASUREMENT, CHEMICAL COMPOSITION & STOICHIOMETRY 10. Calculate the number of moles of sulfur atoms present in each of the following samples. a. 2.01 g of sodium sulfate b. 2.01 g of tetrasulfur tetranitride c. 2.01 g of sodium dithionite (Na-S204) d. 2.01 g of potassium thiosulfate 11. Explain the process/procedure used to calculate the numbers of moles of a particular atom in a sample of a compound when given the mass of the sample of the compound as you did in the previous problem.