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This will depend on the substance you are talking about. One mole is by definition equal to 6.02 x 1023 molecules or atoms of the substance, but the weight of one molecule or atom will vary depending on the substance you are referring to.

To figure out the number of grams in one mole of a substance, you need to calculate the molecular weight of the substance. This is done by adding the atomic weight of each ATOM in the molecule. For instance, in the molecule ethanol (C2H6), you would add the weight of the two carbon molecules (12 x 2) to the weight of the six hydrogen molecules (1 x 6) which gives you a total of 30. Therefore, for ethanol, there are 30 g in one mole of ethanol.

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How many oxygen atoms are in 0.87 g of water?

0.87 grams water (1 mole H2O/18.016 grams)(1 mole O/1 mole H2O)(6.022 X 1023/1 mole O) = 2.9 X 1022 atoms of oxygen --------------------------------------


What is the mass of grams of 1 mole of water?

18 grams


How many hydrogen atoms are in 871 grams of water?

Quite a few! 871 grams water (1 mole H2O/18.016 grams)(2 moles H/1 mole H2O)(6.022 X 1023/1 mole H) = 5.82 X 1025 atoms of hydrogen ========================


How many grams o are there in 18 grams of water?

18 grams of water is 1 mole water. Water is H2O. That means there's 2 moles H and 1 Mole O. We're looking for "O", and there's one 1. So find the molar mass of O. (which is approx. 16) so 16 * 1 = 16.


How many grams of H2O do you need to weigh out to have 1 mole of H2O?

To have 1 mole of H2O, you would need to weigh out approximately 18 grams of water (H2O). This is because 1 mole of water molecules (H2O) has a molar mass of about 18 grams/mol (2 grams/mol for hydrogen x 2 atoms + 16 grams/mol for oxygen).


How many atoms of oxygen are there in 13 grams of water?

There are 7.24 x 10^23 atoms of oxygen in 13 grams of water. This calculation is based on the molar mass of water (18.015 g/mol) and the fact that each water molecule contains two hydrogen atoms and one oxygen atom.


How many grams are in 1 mole of sulfuric acid?

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How many grams are in 1 mole of salt?

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How many molecules are in 4.21 grams of water?

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How many grams of hydrogen are in 25.0g of water?

25x(2/18)=2.78g of hydrogen 25x(16/18)=22.22g of oxygen