First, calculate the molar mass of aspirin (C9H8O4) using the Periodic Table. Next, convert the number of molecules to moles by dividing by Avogadro's number. Finally, multiply the number of moles by the molar mass of aspirin to find the mass in grams.
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.
im sorry its 10 to the 21 power
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
First, calculate the molar mass of O2 (molecular weight = 32 g/mol). Then, convert the given number of molecules to moles using Avogadro's number (6.022 x 10^23 molecules/mol). The result would be approximately 0.067 moles of O2.
0.5 carat carbon (0.2 grams/1 carat)(1 mole C/12.01 grams)(6.022 X 1023/1 mole C) = 5.0 X 1021 atoms of carbon ===================
im sorry its 10 to the 21 power
To convert from molecules to moles, you divide the number of molecules by Avogadro's number (6.022 x 10^23). So, for 4.3 x 10^21 molecules of UF6, you would have approximately 0.0071 moles of UF6.
4.51 g x 1 mol x 6.022 x 1023 molecules = 9.95 x 1021 molecules .............273 g ............... 1 mol
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
7.40025*1021 approx.7.40025*1021 approx.7.40025*1021 approx.7.40025*1021 approx.
0.015 x 6.022 x 1023 = 9.033 x 1021
The sum is: 9+1021 = 1030
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.
First, calculate the molar mass of O2 (molecular weight = 32 g/mol). Then, convert the given number of molecules to moles using Avogadro's number (6.022 x 10^23 molecules/mol). The result would be approximately 0.067 moles of O2.
There are approx. 34 months in 1021 days.