what is the mass of Cu from 5.80 kg of CuFeS2?
2.0174 grams
5.8 kg x (atomic mass Cu/molar mass CuFeS2)
To find the mass of Cu in 5.80 kg of CuFeS2, we need to calculate the percentage of Cu in the compound and then multiply it by the total mass.
CuFeS2 is composed of copper (Cu), iron (Fe), and sulfur (S).
The molar mass of CuFeS2 = (1 x molar mass of Cu) + (1 x molar mass of Fe) + (2 x molar mass of S)
= (1 x 63.55 g/mol) + (1 x 55.85 g/mol) + (2 x 32.06 g/mol)
= 127.10 g/mol
Since Cu accounts for one part in the formula CuFeS2, the molar mass of Cu is 63.55 g/mol.
Now, let's calculate the percentage of Cu in CuFeS2:
Percentage of Cu = (Molar mass of Cu / Molar mass of CuFeS2) x 100
= (63.55 g/mol / 127.10 g/mol) x 100
= 50%
To find the mass of Cu in 5.80 kg of CuFeS2, we can multiply the total mass by the percentage of Cu:
Mass of Cu = (Percentage of Cu / 100) x Total mass of CuFeS2
= (50 / 100) x 5.80 kg
= 2.90 kg
The mass of Cu in 5.80 kg of CuFeS2 is 2.90 kg.
To find the mass of Cu in 5.80 kg of CuFeS2, we need to know the percent composition of Cu in CuFeS2. The compound CuFeS2 consists of copper (Cu), iron (Fe), and sulfur (S), in which the atomic masses are as follows:
Cu: 63.55 g/mol
Fe: 55.85 g/mol
S: 32.06 g/mol
To determine the mass percentage of Cu, we need to calculate the molar mass of CuFeS2:
Cu: 63.55 g/mol * 1 mol = 63.55 g
Fe: 55.85 g/mol * 1 mol = 55.85 g
S: 32.06 g/mol * 2 mol = 64.12 g
Molar mass of CuFeS2:
63.55 g + 55.85 g + 64.12 g = 183.52 g/mol
Now, we can calculate the mass of Cu in CuFeS2:
Mass percentage of Cu = (Atomic mass of Cu / Molar mass of CuFeS2) * 100%
Mass percentage of Cu = (63.55 g / 183.52 g/mol) * 100% = 34.62%
Finally, to find the mass of Cu in 5.80 kg of CuFeS2:
Mass of Cu = Mass percentage of Cu/100 * Mass of CuFeS2
Mass of Cu = 34.62% / 100 * 5.80 kg = (34.62 / 100) * 5.80 kg = 2.00 kg
Therefore, the mass of Cu in 5.80 kg of CuFeS2 is approximately 2.00 kg.