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hicke
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A 5.00 gram sample of BF3 contains how many grams of boron?
0.0979 g
How many moles of ammonium ions does a 22.5 gram sample of ammonium carbonate?
A 22.5 gram sample of ammonium carbonate contains 4.5 moles of ammonium ions.
A 10g sample of the compound copper oxide contains 2.0 g of oxygenWhat mass of oxygen would a 30 g sample of the same compound contain?
it has 6 gram of copper
How many atoms are in one gram of calcium?
To work this out you need to know the atomic weight of calcium and Avogadros number, which is the number of atoms in a gram atom. Calcium has an atomic weight of 40.078. Therefore a gram ato is 40.078 grams which contains 6.02214129(27)×1023 atoms. 1g of calcium contains 6.02214129(27)×1023 / 40.078 1.502 X 1022
How do you find the mass of 264.95 grams?
Gram is a unit of mass. Just look at the number that comes before 'gram'. That's the mass, in grams.
A 5.00 gram sample of BF3 contains how many grams of boron?
0.0979 g
What is the mass of a boron sample which contains 585 moles of b atoms?
Each mole of boron atoms has a mass of 10.811 grams, as indicated by the gram atomic mass or weight of boron. Therefore, 585 moles has a mass of about 6.32 X 103 grams, to the same number of significant digits as 585.
42.7 gram sample of potassium nitrate contains how many grams of potassium?
16.5
If you have 10.0 g each of Na C Pb and Ne which contains the largest number of moles?
A 42.7 gram sample of potassium nitrate (KNO3) contains how many grams of potassium?
What is the Cost of boron per gram?
Boron costs about $5 per gram
If A brass sample with a mass of 6 Grams is divided into 0.5-gram samples How many 0.5-gram samples are there?
12
How many moles of ammonium ions does a 22.5 gram sample of ammonium carbonate?
A 22.5 gram sample of ammonium carbonate contains 4.5 moles of ammonium ions.
How much of an 8 gram sample is left after 3 half lives?
2.66666666666667 grams
What is the Cost of boron per pound?
Boron is currently $5 per gram, or around $2, 268 per pound.Wow! If you're doing experiments, may I suggest buying a few grams? :D
What units is rarely if ever used in science centimeter gram quart milliliter?
The gram contains
How much protein is in refried beans?
A one 443 gram can of refried beans contains 24 grams of protein. One cup contains 12 grams of protein.
A sample of Se weighs 20.5 grams will a sample of V that contains the same number of atoms weigh more or less than 20.5 grams?
A sample of Se weighs 20.5 grams. Will a sample of V that contains the same number of atoms weigh more or less than 20.5 grams? (more, less): _______Calculate the mass of a sample of V that contains the same number of atoms. _______ grams of VAnswer:Since the atomic weight of V is smaller than the atomic weight of Se, each atom will have a smallermass, and the sample will weigh less.Since the same number of moles will contain the same number of atoms, regardless of the element, it is only necessary to find the number of moles of Se in the 20.5 gram sample, and then to find the mass of the same number of moles of V.The atomic weight of Se is 79.0 g/mol1. Convert grams of Se to moles of Se:moles Se= 20.5 g Se1 mol = 0.260 mol Se79.0 gMultiply by moles per gram. Grams cancel out.The atomic weight of V is 50.9 g/mol2. To convert 0.260 moles of V to grams of V:grams V = 0.260 mol V50.9 g = 13.2 g V1 molMultiply by grams per mole. Moles cancel out.
