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Density of H2 in liquid is 0.07099 g/L
so 31.6 ml = 0.0316 Liters
0.07099 g/L = mass in grams/0.0316 Liters
= 2.24 X 10^-3 grams
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∙ 13y ago
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How many grams of KOH and 4 g of H2?
Yes.
How many grams of hydrogen are there in 150g of ammonia?
This is based on calculations. It contains 25 grams of H2.
How many molecules of H2(g) are there in a 21.25 gram sample?
The number of molecules is 6,3985.10e24.
How many grams of ammonia NH3 will be prepared when 6.00g of hydrogen H2 has reacted?
34 grams of Ammonia
What is the volume of hydrogen gas when a sample of 9 grams of aluminum metal is added to an excess of hydrochloric acid?
9g Al x (1 mol Al/27g Al) x (3mol H2 / 2 mol Al) x (22.4L / 1 mol H2) = 11.2L H2
How many grams of KOH and 4 g of H2?
Yes.
How many grams of hydrogen are there in 150g of ammonia?
This is based on calculations. It contains 25 grams of H2.
If you have 3 64 grams of H2 how many grams of NH3 can be produced?
The answer is 20,664 g ammonia.
How many grams of ammonia NH3 will be prepared when 6.00g of hydrogen H2 has reacted?
34 grams of Ammonia
How many molecules of H2(g) are there in a 21.25 gram sample?
The number of molecules is 6,3985.10e24.
How many moles of H2 are in 30 grams of Na?
None. There is no hydrogen in sodium
How many atoms in 1g H2?
1 gram H2 (1 mole H2/2.016 grams)(6.022 X 1023/1 mole H2) = 3 X 1023 atoms of hydrogen gas =========================
What is the volume of hydrogen gas when a sample of 9 grams of aluminum metal is added to an excess of hydrochloric acid?
9g Al x (1 mol Al/27g Al) x (3mol H2 / 2 mol Al) x (22.4L / 1 mol H2) = 11.2L H2
How many grams of hydrogen are needed to produce 30.0 grams of water?
The synthesis reaction is 2 H2 + O2 = 2 H2O. Every two moles of hydrogen reacts with one mole of oxygen to make two moles of water. Then 30.0 grams of water is 1.67 moles, and 1.67 moles of H2 has a mass of 3.37 grams. 25.0 grams of O2 is .781 moles, so 1.562 moles of H2 are needed, or 3.15 grams.
What is the percent yield of h2o if 58g h2o are produced by combining 60g o2 and 7g h2?
Balanced equation. 2H2 + O2 >> 2H2O ( now find limiting reactant ) 7 grams H2 (1 mole H2/2.016 grams) = 3.472 moles H2 60 grams O2 (1 mole O2/32 grams) = 1.875 moles O2 1.875 moles O2 (2 mole H2/1 mole O2) = 3.75 mole H2 ( checked O2, but I know H2 limits because you do not have 3.75 moles H2, so H2 drives reaction) 3.472 moles H2 (2 mole H2O/2 mole H2)(18.016 grams/1 mole H2O) = 62.552 grams H2O produced, so; 58 grams/62.552 times 100 = 92.7% yield of H2O, call it 93%
How many grams of water can be prepared from 5moles of hydrogen at standard conditions?
Balanced equation. 2H2 + O2 --> 2H2O 5 moles H2 (2 moles H2O/2 mole H2)(18.016 grams/1 mole H2O) = 90 grams of water ===============
How many grams of NH3 can be produced from 4.33 mol of N2 and excess H2. Express your answer numerically in grams.?
The mass of ammonia is 147,5 g.
