how many molecules are there in 0.32g of copper
To find the number of molecules in 0.32g of copper, you will need to use the concept of molecular weight and Avogadro's number.
1. Find the molar mass of copper:
The molar mass of copper (Cu) is 63.55 grams/mol. This means that in one mole of copper, there are 63.55 grams.
2. Convert grams to moles:
To convert grams of copper to moles, divide the given mass by the molar mass:
Moles of copper = Mass of copper (g) / Molar mass of copper (g/mol)
= 0.32g / 63.55 g/mol
3. Use Avogadro's number:
Avogadro's number (NA) is approximately 6.022 x 10^23 mol⁻¹. This means that there are 6.022 x 10^23 particles (atoms or molecules) in one mole of a substance.
4. Calculate the number of molecules:
To find the number of molecules in the given mass of copper, multiply the moles of copper by Avogadro's number:
Number of molecules = Moles of copper x Avogadro's number
= (0.32g / 63.55 g/mol) x (6.022 x 10^23 mol⁻¹)
By following these steps, you can calculate the number of molecules in 0.32g of copper.