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How many hydrogen atoms are in 35.0 grams of hydrogen gas?
Wiki User
∙ 14y ago
Joy Reyes
lenpollock
Remember the equa'n
Moles = mass(g) / Mr
The Mr(H2) is '2' NOT '1' , because hydrogen exists as a di-atomic molecule.
Ther mass is given at 75 g.
Hence mol(H2) = 75/2 = 37.5 moles.
Wiki User
∙ 14y ago0.35g X moles/gram of Hydrogen. 0.35g X 1 mole/1.008 grams or (0.35 X1) divided by 1.008= 0.347 or 0.35 Using dimensional analysis
Wiki User
∙ 9y agohow many atoms are in 0.35 mol of the element lithium
Wiki User
∙ 12y agoQuite a few!
75.00 grams hydrogen (1 mole H/1.008 grams)
= 74.40 moles of hydrogen
===================
Wiki User
∙ 11y agoThere are 17.5 moles of hydrogen molecules.
Joy Reyes
The number of hydrogen atoms in 35.0 g of hydrogen gas is 1.045 x 10 to the power of 25.
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How many moles of hydrogen gas are in 5.04 grams in hydrogen gas?
5 moles
How many GRAMS of hydrogen are present in 2.08 moles of water?
2.08 moles H2O (2 moles H/1 mole H2O)(1.008 grams H/1 mole H) = 4.19 grams of hydrogen ===================
How many grams is 0.5 moles of sodium bicarbonate?
The molar mass of sodium hydrogen carbonate is 84 grams per mole, therefore 0.5 moles of it weighs 42 grams.
How many moles of hydrogen will it take to make 36 grams of water?
Answer: 16 g of oxygen and 2 g of hydrogen.
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.
How many moles of hydrogen gas are in 5.04 grams in hydrogen gas?
5 moles
How many GRAMS of hydrogen are present in 2.08 moles of water?
2.08 moles H2O (2 moles H/1 mole H2O)(1.008 grams H/1 mole H) = 4.19 grams of hydrogen ===================
How many moles are in 454 grams in sodium?
atomic waight of hydrogen = 1.0079 weight of one mole of hydrogen = its atomic mass in grams(just like all elements). therefore 454g/1.0079g = 450.4 moles of hydrogen.
How many moles of H2 are in 30 grams of Na?
None. There is no hydrogen in sodium
How many moles are in 8.2 grams?
This cannot be answered because it is essential to know what element you're dealing with here. 8.2 grams of iron will contain considerably less atoms than 8.2 of hydrogen. Therefore, the number of moles in 8.2 grams of iron will differ from the number of moles in 8.2 grams of hydrogen.
How many grams is 0.5 moles of sodium bicarbonate?
The molar mass of sodium hydrogen carbonate is 84 grams per mole, therefore 0.5 moles of it weighs 42 grams.
How many pounds in 7500 grams?
7500 grams = 16.53 pounds. 1 pound = 453.59 grams.
How many hydrogen atoms are present in 3.65 grams of water?
3.65 grams of water is equal to .203 moles of H2O. This means there is also .203 moles of H2 present, or .408 grams.
How many moles of hydrogen will it take to make 36 grams of water?
Answer: 16 g of oxygen and 2 g of hydrogen.
How many grams in 7500 milligrams?
7500 mg = 7.5 g
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.
How many moles of hydrigen are present in a 2 grams sample of hydrogen gas?
Mass (g) = Mr * Moles If you rearrange it, you get Moles = Mass/Mr Working with a 2dp periodic table you get: Moles = 2/1.01 =1.98 There are 1.98 moles of hydrogen in 2g of H2 gas.
