What is the percentage by weight of calcium in CA(OCL)2? [CA=40,Cl=35•5,O=16].
To calculate the percentage by weight of calcium in Ca(OCl)2, we need to find the molar mass of Ca(OCl)2 and the molar mass of calcium.
Molar mass of Ca(OCl)2:
Ca = 40 (atomic mass of calcium)
O = 16 (atomic mass of oxygen)
Cl = 35.5 (atomic mass of chlorine)
Ca(OCl)2 = (1 * 40) + (2 * (16 + 35.5)) = 40 + 2 * 51.5 = 143
Molar mass of calcium = 40
Percentage by weight of calcium in Ca(OCl)2 can be calculated using the equation:
(Atomic mass of calcium / Molar mass of Ca(OCl)2) * 100
Plugging in the values:
(40 / 143) * 100 ≈ 27.97%
Therefore, the percentage by weight of calcium in Ca(OCl)2 is approximately 27.97%.
To find the percentage by weight of calcium (Ca) in Ca(OCl)2, we need to calculate the molar mass of Ca(OCl)2 first, and then determine the proportion of calcium in that compound.
The molar mass of Ca(OCl)2 can be determined by adding up the atomic masses of each element present:
Ca: 1 × 40 = 40
O: 2 × 16 = 32
Cl: 2 × 35.5 = 71
Total molar mass = 40 + 32 + 71 = 143 g/mol
Now, let's find the fraction of the molar mass that corresponds to calcium:
Fraction of calcium = (40 g/mol / 143 g/mol) × 100%
Percentage of calcium in Ca(OCl)2 = 27.97%
Therefore, the percentage by weight of calcium in Ca(OCl)2 is approximately 27.97%.
To find the percentage of calcium by weight in Ca(OCl)2, you first need to calculate the molar mass of Ca(OCl)2.
The molar mass of Ca is 40 g/mol, the molar mass of Cl is 35.5 g/mol, and the molar mass of O is 16 g/mol.
To find the molar mass of Ca(OCl)2, you multiply the molar mass of each element by the number of atoms in the compound:
(40 g/mol) + 2 * ((35.5 g/mol) + 16 g/mol) = 40 g/mol + 2 * (51.5 g/mol) = 40 g/mol + 103 g/mol = 143 g/mol
So, the molar mass of Ca(OCl)2 is 143 g/mol.
Next, you need to determine the weight of calcium in 1 mole of Ca(OCl)2. Since the molar mass of calcium is 40 g/mol, the weight of calcium in 1 mole of Ca(OCl)2 is 40 g.
Finally, to find the percentage by weight of calcium in Ca(OCl)2, you divide the weight of calcium (40 g) by the molar mass of Ca(OCl)2 (143 g/mol) and multiply by 100:
(40 g / 143 g/mol) * 100 = 27.97%
Therefore, the percentage by weight of calcium in Ca(OCl)2 is approximately 27.97%.