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The mass of NH3 mole = its molecular weight = 14 + 3 x 1 = 17

The mass of H2O mole = its molecular weight = 2 x 1 + 16 = 18

This means that one mole of NH3 weigh less than one mole of H2O

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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 grams are in one mole of water using 4 significant figures?

1 mole H2O = 18.02g --- water is H2O ... 2 x 1.008 + 1 x 15.996 = 18.012 g/mole = 18.01 grams


How many grams of H2O are necessary to weigh out 1 mole of H2O?

HCN is hydrocyanic acid and contains no oxygen, so producing it doesn't require oxygen. So zero grams.


How many molecules of H2O equals 1 mole of H2O?

the rule for solving amount of molecules is N(molecules)=6x10^23 x n(amount of mole) therefore there are 6x10^23 molecules in 1 mole of anything or in this case of H20


What is the mass of 2 mole of h2o?

36g


Which weighs more a mole of water or a mole of methane?

It would be a mole of water because you find the molar mass of each compound, finding water is 18.016 g/mol and methane is 16.042 g/mol. Why? water= H2O H 2 x 1.008 O 1 x 16.000 18.016 g/mol methane= CH4 C 1 x 12.010 H 4 x 1.008 16.042 g/mol


How many grams are there in 1.57 moles of water?

1 mole H2O = 18.015g H2O 1.57mol H2O x 18.015g H2O/1mol H2O = 28.3g H2O


Calculate the number of moles of H atoms in 11.5mol H2O?

11.5 mole H2O (2 mole H/1 mole H2O)(6.022 X 10^23/1 mole H)(1 mole H/6.022 X 10^23) = 23.0 moles of H atoms


How many mole h2o have in this reaction caco3 plus 2hcl---cacl2 co2 h2o?

Molar ratio's in this balanced equation: 1 + 2 --> 1 + 1 + 1 (H2O) respectively


What is the mass in grams of 4.5 moles of h2o?

0.25 mole of H2O


Does a mole of water weigh less than a mole of sugar?

A mol is a mol is a mol - no. A mol is a standard unit of measurement and thus any substance, when designated a "mol" will have the same number of particles. Therefore, a mol of salt would have the same number of particles as a mol of sugar. It is like asking if a pound of feathers would weigh more or less than a pound of steel.


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 --------------------------------------