HCN is hydrocyanic acid and contains no oxygen, so producing it doesn't require oxygen. So zero grams.
I'm not sure about how many grams, but 16 molecules are needed.
2 hydrogen surrounded by 8 oxygen each.
That's why O is #8 on the PT.
16g of oxygen per mole of water
18
1 mole of oxygen weighs 16 grams. So, 1.8 moles would weigh 1.8 x 16 = 28.8g
1 mole of O (oxygen) weighs 15. 9996 grams. By definition, 1 mole of any element is equal to its atomic weight expressed in grams. 1 mole is equal to 6.02 x 1023 atoms of that element.
10 grams It's actually 20 grams. Reason is that the ATM on the periodic table is 20ATM, so therefore the mass is 20 grams. The person who wrote 10 grams is a troll.
By definition, one mole would be the same as the atomic mass. You take the number of moles and multiply it by the atomic mass. So if you have just 1 mole, the number of grams will be the atomic mass. Nitrogen's atomic mass is 14.007 grams.
It depends on what it is reacting with.
Approx 18 grams.
No. A mole of hydrogen (in its normal form) weighs 2 grams. A mole of water weighs 18 grams.
Adults weigh around 55 grams while newborns weigh 1.5 grams.
A mole weighs 58 grams
1.0088525g 0.0010088525kg
7.4 moles iron (55.85 grams/1 mole Fe) = 413.29 grams iron
In order to figure this out, you must do dimensional analysis. Here it is: 3.0 moles He x 4.0026 grams/ mole He = 12 grams
4.003 grams
Use stoichometry to figure this out. 1 mole Fe * 56 g Fe ...............1 mole Fe
It is 55.8 grams.
Na2SO4 10.0 grams Na2SO4 (1 mole Na2SO4/142.05 grams)(2 mole Na/1 mole Na2SO4)(22.99 grams/1 mole Na) = 3.24 grams of sodium -------------------------------
The answer is 165,23 grams.