2.5g of magnesium is how many moles?
How do i set it up? Help would be awesome thanks.
mols = grams/atomic mass
From the periodic table, you get the atomic mass of Mg, which is 24.31. Atomic mass is grams/mole, by dimensional analysis:
(2.5g)/(24.31g/mol)=0.1028 moles of Magnesium as the grams units cancel out.
*This answer does not have proper significant figures.
To determine the number of moles in 2.5g of magnesium, you can use the formula:
moles = mass / molar mass
First, you need to find the molar mass of magnesium (Mg). The molar mass of an element can be found on the periodic table. In this case, the molar mass of magnesium is approximately 24.31 g/mol.
Now, substitute the known values into the formula:
moles = 2.5g / 24.31 g/mol
Divide 2.5g by 24.31 g/mol:
moles = 0.103 mol
Therefore, 2.5g of magnesium is approximately equal to 0.103 moles.
To determine the number of moles in 2.5 grams of magnesium, you need to use the equation:
moles = mass / molar mass
The molar mass of magnesium (Mg) is 24.31 grams/mol.
Now let's plug in the values into the equation:
moles = 2.5 g / 24.31 g/mol
To calculate this, divide the mass (2.5 g) by the molar mass (24.31 g/mol):
moles = 0.1029 moles
Therefore, 2.5 grams of magnesium is approximately 0.1029 moles.
Remember to always use the molar mass of the element to convert from grams to moles.