31/108
=0.287037037
31 grams = 0.996 troy oz.
31
31 grams = 1.09 ounces.
14061.4 grams
There are 1000 grams in one kilogram. Therefore, 31 kilograms is equal to 31 x 1000 = 31000 grams.
Moles=given wt./molecular weight 1.25=given wt./70 given wt.=70*1.25=87.5 gm
31 Kg is 31,000 grams
31 grams HCl (1mol/36.458g ) = 0.850 moles 500cm^3 = 0.50 Liters Molarity = moles of solute/liters of solution Molarity = 0.850mol/0.50L = 1.7 Molarity
The molecular weight of ethane (C2H6) is 30.07 so 65.7 g of it would be 2.185 moles. Each mole of ethane burned would yield 2 moles of carbon dioxide - which has a molecular weight of 44.01. You would get 2 x 2.185 x 44.01 = 96.2 g of carbon dioxide Note that the statement of burning with excess oxygen is important because it would push the reaction more to completion and limit the formation of carbon monoxide to an insignificant amount.
Depends on the molecule. Look in the periodic table at the atomic weights. This number is the grams per mole. Carbon for example has 12 grams in each mole.
31 pounds = 14,061.4 grams
30-31 grams.