0
no of mol = mass/molar mass = 72/ (40+32+16x4) = 72/136 = 0.529 mol (3.s.f)
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
Why do you need 40 grams of calcium and 32 grams of sulfur to make 72 grams of calcium sulfide?
From the periodic table, calcium has a molar mass of 40.078g/mol and sulfur has a molar mass of 32.065g/mol. The formula for compound formed from calcium and sulfur, calcium sulfide is CaS. The molar mass of CaS is 72.143. So, if you round the numbers, 40g of Ca + 32g of S will produce 72g of CaS.
What is the total mass of water formed when 8 grams of hydrogen reacts completely with 64 grams of ovygen?
43.2 grams of water
The mass of the rock is 12 grams what is the density of the rock?
density= mass/ volume D= 36/12 =3g/cm3
What is the molar mass of C6Cl6?
mass of 6 moles of C = 12X6 =72g mass of 6 moles of Cl = 35.5X6 = 213g mass of 1 mole of C6Cl6 = 285g
How many mg are in 72g?
72,000 mg
How many moles of water are on 72.08g of H2O?
The molecular formula of water is H2O. The atomic mass of H2O is 2(1.0) + 16.0 = 18.0Amount of H2O = mass of pure sample/molar mass = 75/18.0 = 4.17mol There are 4.17 moles of water in a 75 gram pure sample.
How do you calculate the number of moles from the mass?
This is a generic answer with an example of how to solve this kind of problem. You can use the technique given here to find the answer to your particular problem. First you need to find the molecular weight of the compound. Once you've done that, then you simply divide the mass of the compound (in grams) by the molecular weight of the compound (in amu). The result is the number of moles. For example: Water (H2O) has a molecular weight of 2 * 1.0 (for the two hydrogens, 1 amu each) + 1 * 16.0 (for the oxygen, 16 amu) or 18.0 amu. So if I have 27.0 grams of water, then I have 27.0 / 18.0 = 1.5 moles of water.
How many grams of pentane are needed to produce 72g of water?
Start with a balanced equation: C5H12 + 8O2 --> 5CO2 + 6H2OFind the number of moles of water in 72 g: FW of H2O is 18 g/mol so 72g/18g/mol is 4 molRecall from the balanced equation the number of moles of water produced for each mole of Pentane: 6 waters for each pentaneYou produce 4 moles of water so the ratio from the balanced equation says you will need 4/6 mole of pentaneFind the FW of the pentane: It (coincidentally) comes 72 grams/molSo, 0.67 mol of pentane times 72 g/mol will give the final answer of 48.24 grams
How old is a Browning serial number 72G 96937?
The 72G prefix dates your browning auto-5 light weight shotgun to 1972.
Why do you need 40 grams of calcium and 32 grams of sulfur to make 72 grams of calcium sulfide?
From the periodic table, calcium has a molar mass of 40.078g/mol and sulfur has a molar mass of 32.065g/mol. The formula for compound formed from calcium and sulfur, calcium sulfide is CaS. The molar mass of CaS is 72.143. So, if you round the numbers, 40g of Ca + 32g of S will produce 72g of CaS.
What is the GCF of 54gh 72g?
The GCF is 18g.
What is a 72g 24421?
The prefix of 72G indicates that you have a Browning auto-5 light weight shotgun that was made in the year 1972.It is chambered in 12 gauge.
What is a browning 72g 24421?
The prefix of 72G indicates that you have a Browning auto-5 light weight shotgun that was made in the year 1972.It is chambered in 12 gauge.
How do you convert 72g to mg?
Multiply by 1000 =72,000 mg
How much does 72 grams equal in ounces?
72g = 2.54oz
