You are given moles and need to find grams, the Atomic Mass of any element is in g/mol so just go to the periodic tables and Cu which is copper has a mass of 63.546 grams/ mole.
Then you know if you multiply Mole * g / mol the moles will cancel out and you will be left with grams
so .0420 mol Cu * 63.546 g / mole Cu = 2.669 grams
The atomic mass of copper is 63.55 g/mol therfore 0.043 moles weighs 2.67 g
Mass = moles x formula mass Mass = 0.139 x atomic mass of copper (63.5) Mass = 8.83g
For this you need the atomic mass of Si. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel.2.61 grams Si / (28.1 grams) = .0963 moles Si
The atomic mass of Copper is 63.5 grams One mole of any element has a mass equal to the atomic mass. 0.75 grams of Cu = x moles of Cu 63.5 grams of Cu = 1 mole of Cu Set up a proportion and solve for x Divide 0.75 / 63.5 = x /1 0.75 ÷ 63.5 = x
Multiply the molar mass value ( 32.0 grams per mole O2) by the number of moles (1.5 mole) to get its mass (48.0 grams for 1.5 mole O2)
The atomic mass of copper is 63.55 g/mol therfore 0.043 moles weighs 2.67 g
2.83 moles
The mass in grams of 3,20 moles of copper is 158,865 g.
See the Related Questions to the left of this answer:"How do you convert from grams to moles and also from moles to grams?"
4,5 moles of copper are equivalent to 285,957 g.
To calculate the number of moles from grams, you must divide by the substance's molar mass
Yes
Mass = moles x formula mass Mass = 0.139 x atomic mass of copper (63.5) Mass = 8.83g
2.3456 grams lead (1 mole Pb/207.2 grams) = 0.01132 moles of lead =================
Multiply 564 grams of copper by 1 mole over the atomic mass of copper (represented in grams). 564 g Cu * 1 mol Cu / (atomic mass) g Cu The atomic mass is located on the periodic table and represented in atomic units. The same value is used here, but with the unit as grams.
No you need more copper
1 mole of Copper has a mass of 63.546 g. So, 14.5 moles will be 14.5 times that amount. Do the math.