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Q: What is the number of molecules in 9.0 g of steam and how?
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How many molecules are there in 39 grams of water?

Steam is just water. Water weighs the same per molecule regardless whether it is ice, water, or steam. That said, the molecular weight of water is right at 18 g/mole. So it seems that 9.0 grams of steam is about half a mole of water. Therefore we just divide avagrado's number by 2 and we get: 6.022 x 1023 / 2 = 3.011 x 1023 molecules


How many molecules of H2(g) are there in a 21.25 gram sample?

The number of molecules is 6,3985.10e24.


What is the number of molecules of 140 g of CO?

The number of molecules of 140g of CO is 3.01x10^24 molecules of CO. CO is Carbon monoxide, with the mono meaning one. It's molar mass is 28.01 g/mol.


How many molecules are in 6.9 g H2O?

The number of molecules is 2,308.10e23.


What molecules contain 60g of alcohol and 60g of water?

Ethanol molar mass: 46,07 gWater molar mass: 18 gAvogadro number: 6,02214129.10 ex.2346,07 g--------------Avogadro number=number of molecules60 g------------------xx = 60 . A/46,07 = 7,842.10 ex.23 molecules of ethanol18 g--------------Avogadro number=number of molecules60 g------------------xx = 60 . A/18 = 20,074.10 ex.23 molecules


How many molecules of water are there in 12g of ice?

[10.0(g) / 18.0(g/mol H2O)] * 6.02.10+23(molecules/mol) = 3.34.10+23 molecules in 10 g of H2O(never mind the physical state: solid, liquid, vapor; it's all 10.0 grams of it)


What would requires more heat melting 500 g of ice or turning 500 g of water into steam?

Water to steam. Think about the bonds. In melting, you are breaking some bonds, but on the whole you still have one group of molecules. In vaporizing, the molecules must break away from the group completely. It is much harder to accomplish this than it is to melt.


How many molecules are in 12.5g of water?

The molar mass of water (H2O) is approximately 18 g/mol. To calculate the number of molecules in 12.5 g of water, we need to convert grams to moles by dividing by the molar mass. 12.5 g / 18 g/mol = 0.694 moles. Since 1 mole of any substance contains 6.022 x 10^23 molecules (Avogadro's number), multiplying 0.694 moles by Avogadro's number gives us approximately 4.18 x 10^23 molecules of water in 12.5 g.


How many molecules of nitric acid are in 300 g of nitric acid?

The number of nitric acid molecules is 28,6723.10e23.


How many molecules (not moles) of NH3 are produced from 5.95104 g of H2?

The number of ammonia molecules is 59 720.10e23.


How many molecules are in 10.0 g of pure C8H8O3?

To determine the number of molecules in 10.0 g of C8H8O3, we need to calculate the number of moles first. The molar mass of C8H8O3 is 152.15 g/mol. By dividing 10.0 g by the molar mass, we find that there are approximately 0.0658 moles of C8H8O3. To convert moles to molecules, we multiply the number of moles by Avogadro's number, 6.022 x 10^23, giving us about 3.96 x 10^22 molecules.


What is the number of molecule of G of CO?

The number of molecules of 140g of CO is 3.01x10^24 molecules of CO. CO is Carbon monoxide, with the mono meaning one. It's molar mass is 28.01 g/mol.