How many grams does 0.500 moles of CuBr weigh?
To find the weight of 0.500 moles of CuBr, we need to calculate the molar mass of CuBr and then multiply it by the number of moles.
The molar mass of an element or compound is the mass of one mole of that substance and is expressed in grams per mole (g/mol). To calculate the molar mass of CuBr (copper (I) bromide), we need to sum the atomic masses of copper (Cu) and bromine (Br).
The atomic mass of copper (Cu) is approximately 63.55 g/mol, and the atomic mass of bromine (Br) is approximately 79.90 g/mol.
So, the molar mass of CuBr is:
Molar mass(Cu) + Molar mass(Br) = 63.55 g/mol + 79.90 g/mol = 143.45 g/mol
Now, to find the weight of 0.500 moles of CuBr, we multiply the molar mass by the number of moles:
Weight = Number of moles × Molar mass
Weight = 0.500 moles × 143.45 g/mol
Calculating this gives us:
Weight = 71.725 grams
Therefore, 0.500 moles of CuBr weighs approximately 71.725 grams.
To find the weight of a substance in grams, you need to know its molar mass. The molar mass is the mass of one mole of a substance.
To determine the molar mass of CuBr (copper(I) bromide), you need to find the atomic masses of copper (Cu) and bromine (Br) on the periodic table.
The atomic mass of Cu is approximately 63.55 grams per mole.
The atomic mass of Br is approximately 79.90 grams per mole.
To calculate the molar mass of CuBr, you add the atomic masses of copper and bromine together:
Molar mass of CuBr = (1 x atomic mass of Cu) + (1 x atomic mass of Br)
Molar mass of CuBr = (1 x 63.55 g/mol) + (1 x 79.90 g/mol)
Molar mass of CuBr = 143.45 g/mol
Now that we know the molar mass of CuBr, we can calculate the weight of 0.500 moles.
Weight = number of moles x molar mass
Weight = 0.500 mol x 143.45 g/mol
Weight = 71.725 grams (rounded to three decimal places)
Therefore, 0.500 moles of CuBr weigh approximately 71.725 grams.
Technically, you have to ask weight where? On the Moon? in Orbit. grams is mass, weight is in newtons.
molmass CuBr =143.45grams
so the mass of 1/2 mole is half that.
Now, its weight is quite a different matter.
Weight=mass*g=mass1/2 mole above in Kilograms * 9.8N/kg