UOLL 6. Find the number of atoms in each of the following: a. 55.3 moles of...
6. Find the number of moles of each of the following. a. 6.023 x 1023 atoms of Polonium b. 4.7g of sulfur c. 23.2 g of Aluminum 7. What is the mass of each of the following elements? a. 2.33 mol of Pb b. 0.266 mol of Na c. 0.99 mol of an element with a molar mass of 123 g/mol 8. How many moles of Ag are produced in the decomposition of 1.00kg of silver () oxide? 9. In...
38. Calculate the number of atoms in each of the following quantities. Show work by using moles. a. 10.8 g boron b. 20.0 g calcium c. 35.9 g titanium d. 45.8 g barium e. 26.97 g silver d. 682.8 g platinum
7.4 Calculate each of the following: a number of Li atoms in 4.5 moles of Li b. number of CO2 molecules in 0.0180 mole of CO2
6. Calculate each of the following: a. the number of C atoms in 0.5 mol of C b. the number of SO, molecules in 1.28 mol of SO2 c. the moles of Fe in a sample containing 5.22 x10atoms of Fe 7. Calculate the molar mass for each of the following (use the periodic table for the atomic mass): H2SO4 Fe:O
What would you multiply "moles of sodium" by to get the units "atoms of sodium"? (unit) moles Na x (number) = atoms Na (number) (unit) What would you multiply "atoms of helium" by to get the units "moles of helium"? (unit) atoms He x (number) -= moles He (number) (unit) What would you multiply "atoms of boron" by to get the units "grams of boron" ? (number) (unit) (number) (unit) atoms B = g B (number) (unit) (number) (unit)
10.Fill in the following table, converting the following number of atoms to moles and moles to atoms as needed. (3 points per problem 12 points total) Atoms Moles 3.25 moles 5.0 x 1025 atoms 0.030 moles 1.8 x 1022 atoms Focus
1. Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 3.80 moles of magnesium perchlorate, Mg(ClO4)2. Express the number of moles of Mg, Cl, and O atoms numerically, separated by commas. 2. A sample of propane, C3H8, contains 10.4 moles of carbon atoms. How many total moles of atoms does the sample contain? Express the total number of moles of carbon and hydrogen numerically. One molecule of ozone, O3, contains three oxygen atoms. Similarly, 1 mole of...
3. How many atoms are in each of the following? a. 7.75 moles of carbon tetrahydride, CH4 b. 0.0888 moles of carbon monoxide c. 75.00g of calcium nitrate d. The number of hydrogen atoms in 15.00g of ammonium hydrogen phosphate e. The number of carbon atoms in 15.00g calcium acetate f. The number of oxygen atoms in 15.00g of dinitrogen tetroxide 1 Rotorming the man of one of the following
12. Calculate the number of moles containing each of the following (a) 1.00 x 1022 atoms of cobalt, Co (b) 2.00 x 1023 molecules of carbon dioxide, CO2 (c) 3.00 x 1024 formula units of cobalt(II) carbonate, COCO,
Part A Calculate the number of moles of aluminum, sulfur, and oxygen atoms in 4.00 moles of aluminum sulfate, Al2(SO4)3 Express the number of moles of Al, S, and O atoms numerically, separated by commas Hints moles of Al, S, O = moles Submit My Answers Give Up Part B Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 8.40 moles of magnesium perchlorate. Mg(CIO4) 2 . Express the number of moles of Mg, Cl, and O...