0.40 moles of aspirin is 72.1 g.
The gram molecular mass of any compound with the formula C9H8O4 is [9(gram Atomic Mass of carbon) + 8(gram atomic mass of hydrogen ) + 4(gram atomic mass of oxygen)] or 180.1558. This by definition is the mass of Avogadro's Number of molecules. Therefore the mass of 1.40 X 1021 molecules is:
180.1558[(1.40 X 1021 )/6.022 X 1023)] or 4.19 X 10-1 grams, to the justified number of significant digits.
1.56 moles of Aspirin is equal to 281 grams.
The molar mass of aspirin (2-acetoxybenzoic acid), C9H8O4, is 180.157 g/mol.
C9H18O4 has a molar mass of 180.157 g/mol
72
im sorry its 10 to the 21 power
1 mole of O2 contains 6.02 x 1023 molecules. In 2.045 x 1021 molecules, there are ( 2.045 x 1021 / 6.02 x 1023 ) moles = 0.0034 moles.
Assuming that this ammonia gas is at STP, you can use Avogadro's number to gind the number of moles of gas:(387 x 1021 molecules) x (1 mol / 6.02x1023particles) x (17.03 g / 1 mol) =110 g NH3
0.015 x 6.022 x 1023 = 9.033 x 1021
(1.45/237) X Avogadro's number = 3.68 X 1021.
im sorry its 10 to the 21 power
A mole is a unit of measurement that is used to measure the number of things. The amount of moles that are in 4.3 x 1021 molecules of UF6 are 9.34 and the amount of grams is 2.51.
4.51 g x 1 mol x 6.022 x 1023 molecules = 9.95 x 1021 molecules .............273 g ............... 1 mol
1 mole of O2 contains 6.02 x 1023 molecules. In 2.045 x 1021 molecules, there are ( 2.045 x 1021 / 6.02 x 1023 ) moles = 0.0034 moles.
Assuming that this ammonia gas is at STP, you can use Avogadro's number to gind the number of moles of gas:(387 x 1021 molecules) x (1 mol / 6.02x1023particles) x (17.03 g / 1 mol) =110 g NH3
0.015 x 6.022 x 1023 = 9.033 x 1021
7.40025*1021 approx.7.40025*1021 approx.7.40025*1021 approx.7.40025*1021 approx.
(1.45/237) X Avogadro's number = 3.68 X 1021.
4.9x10^22 molecule
1021 = MXXI
1021 is a prime number. Therefore, its only positive integer factors are 1 and 1021.
Not by anything other than 1 or 1021. 1021 is a prime number.