12. Calculate the number of moles containing each of the following (a) 1.00 x 1022 atoms...
moles of C. 6) 0.400 mole of sucrose, C12H22011. contains A) 12 B) 6.02 x 1023 C) 5.02 x 1022 D) 2.89 x 1024 E) 4.80 7) How many moles of carbon atoms are there in 0.500 mole of C2H6? A) 0.500 mole B) 1.00 mole C) 3.00 moles D) 6.02 x 1023 moles E) 4.00 moles 8) Calculate the molar mass of magnesium chloride, Mg (12. A) 24.31 g/mole B) 95.21 g/mole C) 125.9 g/mole D) 59.76 g/mole E)...
6. Calculate each of the following: a. the number of atoms in 0.5 mol ofc b the number of So, molecules in 1.28 mol of SO c. the moles of Fe in a sample containing 5.22 x10 - atoms of Fe 7. Calculate the molar mass for each of the following use the periodic table for the atomic mass): H2SO4 Fe2O3 Al(SO.) Mg(OH)2 (NH4)2CO3 8. How many moles of Cl2 are there in 25 g of Ciz? 9. How many...
Calculate the number of atoms in each of the following masses: a. 54.0 g of aluminum ogAlx imetat x 6.022 X 10 atoms Al 26.98gAT imotat = 1.21x102t atoms Al b. 69.45 g of lanthanum (La) c. 0.697 g of gallium d. 0.000 000 020 g beryllium 6) Calculate the mass of the following numbers of atoms: a. 6.022 x1024 atoms of tantalum (Ta) 6022 X 1024 atoms Tax imotta X 6.022 x 1023 abousta 180 95g Ta motta =...
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
31). 31) To convert a given number of moles into the number of atoms, one would multiply by which of the following factors? A) 1.66 x 10-24 atoms/1 mol B) 1 mol/6.022 x 1023 atoms C) molar mass D) 6.022 x 1023 atoms/1 mol E) 1 mol/1.66 x 10-24 atoms 32) 32) How many atoms of sulfur are present in a 155 g sample of sulfur? [Molar mass: S, 32.06 g/mol] A) 6.02 x 1023 atoms B) 2.91 x 1023...
m105%20Makeup%20Exam%20(2).pdf 31) 31) To convert a given number of moles into the number of atoms, one would multiply by which of the following factors? A) 1.66 x 10-24 atoms/I mol B) 1 mol/6.022 1023 atoms C) molar mass D) 6.022 * 1023 atoms/1 mol E) 1 mol/1.66 x 10-24 atoms 3 2) 32) How many atoms of sulfur are present in a 155 g sample of sulfur? [Molar mass: S 32.06 g/mol) A) 6.02 x 1023 atoms B) 2.91 x...
How many moles are each of the following? (a) 3.17 x 1022 atoms of C
explanation please 8) How many molecules are present in 4.25 mol of CC14? A) 9.26 x 1024 molecules (B)2.56 x 1024 molecules C) 653.69 molecules D) 153.81 molecules E) 3.69 x 10-23 molecules 9) How many molecules are there in 3.00 moles of NH3? A) 1.00 molecules B) 3.00 molecules C) 17.00 molecules D) 1.20 x 1024 molecules E1.81x 1024 molecules 10) How many molecules are present in 3.25 mol of C2H60? A) 3.25 molecules B) 46.0 molecules C) 1.85...
1.) Calculate the number of molecules in 7.00 moles H2S. Express your answer numerically in molecules. 2.) Calculate the number of moles of Cl atoms in 3.61×1024 formula units of magnesium chloride, MgCl2. Express your answer numerically in moles.
9) What is the total number of atoms in 0.139 mol of Fe(OH263-? A) 19.0 B) 2.64 98.37. 1022 D) 1.59. 1024 E) 184. 1024 10) How many carbon atoms are there in 52.06 g of carbon dioxide? A) 8.648.10-23 B) 3.134 x 1025 C) 7.122 1023 D) 5.206 X 1024 E) 1.424 . 1024 11) A nitrogen oxide is 63.65% by mass nitrogen. The molecular formula could be A) NO B) NO2 CN204 D) N20 E) either NO2 or...