Chapter 2, Problem 2.52E

For all problems involving calculations, show your work. Carry the units through each calculation and follow significant figure rules. Practice on scratch paper then here. 1. Perform the following: Write the formula for copper (II) phosphate.. b. Calculate the molecular weight for copper (11) phosphate. c. Calculate the number of moles of copper (II) phosphate in 129.4 g of copper (II) phosphate d. Calculate the total number of atoms of phosphorus in 129.4 g of copper (II) phosphate. 97

1. What do you call to the unit amount of a substance used for measuring large quantities of very small entities such as atomd, molecules, or other specified particle like counting molecules of medicine in 0.20g infusion? A. Mole B. Molecular Unit c. Molecules D. Formula Unit 2. Who was credited for the idea of that the number of molecules in the substance proportional to its physical mass? A. Amadeo Avogadro B. Emedeo Avogardo C. Jean Baptiste Perrin D. Jean Loschmidt 3. In Hubei China, Ten hospitals were used to do a trial for Remdesivir drugs. Patients age 18 and above was admitted with a laboratory confirmed SARS COV 2 infection. Patients were assigned to intake 0.20 g of Redmesivir on the first day and followed by 0.10 g on the following days. How much molecules of Remdesivir was used on the first day? A. 1998 x 1018 molecules of C27H35N6O8P B. 1998 x 1019 molecules of C27H35N6O8P C. 1998 x 1020 molecules of C27H35N6O8P D. 1998 x 1021 molecules of C27H35N6O8P 4. A mole consists of…

many molecules are contained in each compound? a. 1.35 mol of carbon disulfide (CS2) b. 0.254 mol of diarsenic trioxide (As2O3) How c. 1.25 mol of water d. 150.0 mol of HCl Determine the number of moles in each substance. a. 3.25 x 1020 atoms of lead b. 4.96 x 1024 molecules of glucose c. 1.56 x 1023 formula units of sodium hydroxide d. 1.25 x 1025 copper(II) ions Perform the following conversions. a. 1.51 x 1015 atoms of Si to mol of Si b. 4.25 x 10-2 mol of H2SO4 to molecules of H,SO4 c. 8.95 x 1025 molecules of CCl, to mol of CCI4 d. 5.90 mol of Ca to atoms of Ca