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How many molecules of ethanol are contained in a 19.6 mL sample of ethanol?
Wiki User
∙ 16y ago
The density of ethanol is 0.789 g/mL. So 19.6 mL of ethanol weighs 0.789 g/mL * 19.6 mL = 15.464 g. The molar mass of ethanol is 2*12.011 + 6*1.008 + 15.999 = 46.069 g/mol. So, in 15.464 grams, there are 15.464 g / 46.069 g/mol = 0.33567 moles In one mole, there are 6.022*1023 molecules, so we have: 0.33567 moles * 6.022*1023 molecules/mole= 2.0214*1023 molecules. Using correct significant digits, that gives: 2.02*1023 molecules (or particles).
Wiki User
∙ 16y ago
Wiki User
∙ 13y ago1.70*10^24
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How many molecules of ethanol can be obtained from one molecule of sugar?
From one molecule of glucose (sugar) you can obtain two molecules of ethanol. Glucose's chemical composition is C6H12O6 Carbon dioxide (Co2) is lost in the fermentation process so we are left with 2C2H5OH or two ethanol molecules! Hope it helps!
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2.05×1022 molecules
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1.27X10^22
How many molecules are contained in a 5.20-g sample of dimethylmercury?
The answer is 1,357.10 ex.23 molecules.
How many molecules are contained in a 5.20 g sample of dimethylmercury?
The answer is 1,357.10 ex.23 molecules.
How many molecules are contained in a g sample of dimethylmercury?
1.24*10^22
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1.814*1022
How many molecules are contained in a 4.75-g sample of dimethylmercury?
1.24*10^22
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1.12*10^22
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5.418E23 molecules
how many molecules of ethanol are there in 1 liter of ethanol (density: 800 gr/l)?
Mass of 1 liter ethanol = 800 gram Molar Mass of ethanol = 46.07 gram/mol Therefore, Number of moles in 1 liter ethanol = 800/46.07 = 17.365 mol Number of molecules in 1 mol of ethanol = 6.023 × 10²³ molecules Therefore, Number of molecules in 1 liter of ethanol = 17.365 × 6.023 × 10²³ molecules = 104.599 × 10²³ molecules = 1.05 × 10²⁵ molecules
