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What is the mass in mg of thanol of 5.1 1020 molecules of ethanol?
Wiki User
∙ 10y ago
mass in mg. of ethanol of 5*1020 molecules of ethanol
Wiki User
∙ 10y ago
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How many molecules of ethanol are contained in a 19.6 mL sample of ethanol?
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).
If ethanol has a density of 789 g then what is the mass of 225 g of ethanol?
225 g
What is the relative formula mass of ethanol?
46.068g
What is the mass of 63.0 mL of ethanol?
63.0 X 0.789 = 49.7g
How many moles of ethanol per liter?
AnswerThe density of ethanol is 0.789 g/cm³ , and there are 1000 cm3 in a liter, so 1 liter weighs 0.789 kilograms.Density = mass/volume, So mass=density*volume.So, weight of 1L ethanol = 0.789*1 => 0.789KG
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
What is the mass of 4.89 x 1020 molecules of Br2?
1 mole Br2 = 159.808g Br2 = 6.022 x 1023 molecules Br2 4.89 x 1020 molecules Br2 x 1mol Br2/6.022 x 1023 molecules Br2 x 159.808g Br2/mol Br2 = 0.130g Br2
HOW DO I CALCULATE THE PERCENTAGE BY MASS OF ETHANOL IN A MIXTURE OF ETHANOL AND WATER?
Divide the mass of the ethanol by the sum of the mass of the ethanol + that of the water and multiply by 100. Mass ethanol/(Mass ethanol + mass H2O) (x100)
What is the mass of 0.5623 moles of ethanol ch3ch2oh?
The molar mass of ethanol is 46g/mol. Using the formula mass = (molar mass) x (no. of moles), the mass of 0.5623mol of ethanol is approximately 25.9g.
What is the mass of Ceres?
The mass of Ceres is 9.43 * 1020 kg or 0.0158% of the Earth's mass.
How many molecules of ethanol are contained in a 19.6 mL sample of ethanol?
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).
What percentage of Earth's mass isnthe moons mass?
1 earth mass = 81.78 moon mass (rounded)1 moon mass = 0.01223 earth mass = 1.223% of earth mass (rounded)Using:Me = 59,700 x 1020 KgMm = 730 x 1020 Kg
What is the mass of the asteroid 2 Pallas?
About 2 x 1020 kg.
If ethanol has a density of 789 g then what is the mass of 225 g of ethanol?
225 g
What is the mole fraction of ethanol C2H5OH in an aqueous soloution that is 50.0 ethanol by mass?
0.282
Between ethanol and sodium chloride which has the greatest freezing point lowering when added to water?
According to Wikipedia, "the freezing point depression is a colligative property, which means that it is dependent on the presence of dissolved particles and their number, but not their identity." (http://en.wikipedia.org/wiki/Freezing-point_depression) The solubility of sodium chloride is of course different from ethanol, as is the molar mass. However, if you add x molecules of ethanol it should have the same effect as x molecules of sodium cholride.
What is the mass of pallas?
Pallas or 2 Pallas has a mass of about 2.11 x 1020 kg The Earth for comparison has a mass of 5.9736 x 1024 kg
