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Calcium is 40g per mole (according to the Periodic Table,) so 50/40=1.25 moles.
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How many moles of N2 are in 50g of it?
To determine the number of moles of N2 in 50g, you first need to find the molar mass of N2 (28.02 g/mol). Then, you divide the given mass (50g) by the molar mass to get the number of moles. In this case, 50g / 28.02 g/mol ≈ 1.79 moles of N2.
How many moles of Al are in 50g of it?
The atomic mass of Al is 27.0 Amount of Al in a 50g pure sample = 50/27.0 = 1.85mol
What is the mass in grams of 0.330mol of calcium?
The mass is 0.330 mol Ca (40.08 g/mol) = 13.2 g Ca
Mass of 3.400 mol Ca(OH)2?
The mass of 3,400 mol Ca(OH)2 is 251,9 g.
How many grams of Ca are in 145 g of CaF2?
To find the grams of calcium (Ca) in 145 g of calcium fluoride (CaF2), first calculate the molar mass of CaF2. The molar mass of Ca is approximately 40.08 g/mol, and that of fluorine (F) is about 19.00 g/mol, so the molar mass of CaF2 is approximately 40.08 + 2(19.00) = 78.08 g/mol. The mass fraction of Ca in CaF2 is 40.08 g/mol / 78.08 g/mol ≈ 0.513. Therefore, in 145 g of CaF2, the mass of Ca is about 145 g × 0.513 ≈ 74.4 g.
How many moles does 50g of NaCl represent?
To determine the number of moles in 50g of NaCl, you first need to find the molar mass of NaCl, which is approximately 58.44 g/mol. Then, you divide the given mass by the molar mass to find the number of moles. So, 50g of NaCl represents approximately 0.855 moles (50g / 58.44 g/mol = 0.855 mol).
How many moles of N2 are in 50g of it?
To determine the number of moles of N2 in 50g, you first need to find the molar mass of N2 (28.02 g/mol). Then, you divide the given mass (50g) by the molar mass to get the number of moles. In this case, 50g / 28.02 g/mol ≈ 1.79 moles of N2.
How many moles of Al are in 50g of it?
The atomic mass of Al is 27.0 Amount of Al in a 50g pure sample = 50/27.0 = 1.85mol
How many moles are in a 50g sample of estrogen?
To determine the number of moles in a 50g sample of estrogen, you need to know its molecular weight. The molecular weight of estrogen (specifically estradiol, a common form) is approximately 272.38 g/mol. Using the formula: moles = mass (g) / molar mass (g/mol), you can calculate the moles: 50g / 272.38 g/mol ≈ 0.183 moles of estrogen in the sample.
What is the mass in grams of 0.330mol of calcium?
The mass is 0.330 mol Ca (40.08 g/mol) = 13.2 g Ca
If 20.0 grams of Ca combines completely with 16.0 grams of S to form a compound what is the percent composition of Ca in the compound?
First, find the molar mass of Ca and S (40.08 g/mol for Ca and 32.06 g/mol for S). Next, calculate the moles of each element present (0.499 mol of Ca and 0.499 mol of S). Find the total mass of the compound (36.0 g) and calculate the percent composition of Ca (about 55.6%).
Mass of 3.400 mol Ca(OH)2?
The mass of 3,400 mol Ca(OH)2 is 251,9 g.
How many moles of calcium are there in 77.4 grams of Ca?
To find the number of moles, you need to divide the given mass of calcium by its molar mass. The molar mass of calcium (Ca) is approximately 40.08 g/mol. Number of moles = 77.4 g / 40.08 g/mol ≈ 1.93 moles.
Calculate the number of hydroxide ions present in 0.250 mol of Ca(OH)2?
Since there are 2 hydroxide ions (OH-) for every one molecule of Ca(OH)2, in 0.250 mol of Ca(OH)2 there are 0.500 mol of hydroxide ions. We can then multiply 0.500 mol by Avogadro's number to find the number of hydroxide ions present, which is approximately 3.01 x 10^23 ions.
How many grams of Ca are in 145 g of CaF2?
To find the grams of calcium (Ca) in 145 g of calcium fluoride (CaF2), first calculate the molar mass of CaF2. The molar mass of Ca is approximately 40.08 g/mol, and that of fluorine (F) is about 19.00 g/mol, so the molar mass of CaF2 is approximately 40.08 + 2(19.00) = 78.08 g/mol. The mass fraction of Ca in CaF2 is 40.08 g/mol / 78.08 g/mol ≈ 0.513. Therefore, in 145 g of CaF2, the mass of Ca is about 145 g × 0.513 ≈ 74.4 g.
What is the percent composition by mass of ca in caso4?
The molar mass of CaSO4 is 136.14 g/mol. The molar mass of Ca in CaSO4 is 40.08 g/mol. To find the percent composition of Ca by mass, divide the molar mass of Ca by the molar mass of CaSO4 and multiply by 100. This gives a percent composition of approximately 29.4%.
How many moles of calcium is 126g of ca?
126 grams calcium (1 mole Ca/40.08 grams) = 3.14 moles of calcium ------------------------------
