7. How many hydrogen molecules are in a tank that has 0.76 moles of hydrogen mol
ID: 3504773 • Letter: 7
Question
7. How many hydrogen molecules are in a tank that has 0.76 moles of hydrogen molecules? 8. How many atoms of potassium make up 2.00 moles? 9. How many molecules of water make up 1.52 mole? 10. How many moles are in 2.43 x 104 sodium atoms? 11. How many moles ar in 926 x 10 water molecules? 12. How many molecules of water make up 1.15 moles of water? 13. How many moles of hydrogen atoms are in 1.00 mole of water? 14. How many moles of carbon atoms are present in 2.53 moles of methane (CH)? 15. How many hydrogen atoms are in a tank that has 0.76 moles of hydrogen molecules? 47Explanation / Answer
7 How many hydrogen molecules are in a tank that has 0.76 moles of hydrogen molecules?
Answer: 0.76mol x (6.02 x 10^23 /1mol) = 4.57
=4.6 x10^23 hydrogen molecules
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8. How many atoms of potassium makeup 2.00 moles?
Answer: 1.204 x 10^24 potassium (K)
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9. How many molecules of water makeup 1.52 mole?
Answer: 1.52 mol x (6.02 x 10^23/1 mol) = 9.1504
9.15 x 10^23 molecules of water.
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10. How many moles are in 2.43 x 10^24 sodium atoms?
2Answer: 43 x 10^24 x (1mol/6.02 x 10^23)= 4.036544
4.04 moles
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11. How many moles are in 9.26 x 10^23 water molecules?
Answer: 9.26 x 10^23 x (1mol/ 6.02 x10^23) = 1.58 moles
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12. How many molecules of water makeup 1.15 moles of water?
Answe: 1.15 moles of water x (6.02 x 10^23/1 mole) = 6.923
6.92 x 10^223
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13. How many moles of hydrogen atoms are in 1.00 mole of water?
Answer: 2 moles of hydrogen x 1 mole of water = 2 moles
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14: How many moles of carbon atoms are present in 2.53 moles of methane (CH4)?
Answer: 1 mole of carbon x 2.53 mole of methane = 2.53 moles
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15. How many hydrogen atoms are in a tank that has 0.76 moles of hydrogen molecules?
Answer: 0.76 moles of hydrogen x (6.02 x10^23/1 mol)2
9.16 hydrogen atoms
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