Mole 1. What is the molar mass of Ba(OH)₂ ? (6)-171.3 grams b. 155.3 grams 154.3 grams C. d. 308.6 grams 2. What percent

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Mole 1 What Is The Molar Mass Of Ba Oh 6 171 3 Grams B 155 3 Grams 154 3 Grams C D 308 6 Grams 2 What Percent 1 (54.82 KiB) Viewed 12 times

Mole 1. What is the molar mass of Ba(OH)₂ ? (6)-171.3 grams b. 155.3 grams 154.3 grams C. d. 308.6 grams 2. What percent of the mass of Na,Si is sodium? a. 77% b. 14% c. 23% d. 68% 3. How many moles of helium is represented by 5.7 grams of helium? a. 8.6 X 1023 moles b. 1.4 moles c. 22.8 moles d. 0.70 moles 4. How many molecules are in 72.0 grams of SO₂? a. 64.07 molecules b. 1.12 molecules c. 6.77 X 1023 molecules d. 1.86 X 1023 molecules 5. How many grams of glucose are in 6.63 x 1023 molecules of glucose, C₂H₁₂O6 a. 1.19 x10 g b. 198 g c. 1.10 g d. 3.68 g 6. How many moles of methanol, CH₂OH, are there in 1.93 x 1025 molecules of methanol? a. 1.08 moles b. 32.0 moles c. 0.922 moles d. 34.71 moles Stoichiometry lom Sta For questions 7-11, balance the equation and solve: _Zn + HCI → ZnCl₂ + H₂ - 7. If 4.13 moles of HCI are used, how many moles of ZnCl₂ are produced? Orad