May 19, 2017 · Copper has a molar mass of 63.546 g mol−1, which means that 1 mole of copper has a mass of 63.546 g. Now, in order to have 1 mole of copper, you need to have 6.022 ⋅ …

The atomic weight of carbon is 12.011g/mol and the atomic weight of hydrogen is 1.008g/mol. Use this knowledge to calculate the molecular formula for benzene, what is the chemical …

0.6024 moles The formula for calculating moles is n=m/M In this case, we know that the substance weighs 2.411 g, or the m variable in the formula. To calculate the molar mass, in …

Explanation: #"Number of atoms of Mg"# #-=# #"Mass of metal"/"Molar mass of metal"xxN_A#, where #N_A-="Avogadro's number"=6.022xx10^23*mol^-1#

We know the mass of #Fe# produced, which is given to be #700.0 * 10^6g# (I've converted it to grams because it will be easier to work with), and #Fe# 's molar mass - #55.8g/ (mol)# - which …

Explanation: The thing to remember about an element's average atomic mass is that each isotope will contribute proportionally to its abundance. In simple terms, the average atomic mass of …

We need (i) a stoichometrically balanced equation: F e2O3 + 2Al → Al2O3 + 2F e And (ii) the molar quantity of iron metal produced: = 279 ⋅ g 55.85 ⋅ g ⋅ mol−1 = 5.00 ⋅ mol. Since a 5.00 ⋅ …

May 30, 2017 · Here's what I got. Molality is defined as the number of moles of solute present for every "1 kg" of solvent. You know that your solution has a molarity of "3 M", which implies that …

Mar 10, 2016 · The first step is to calculate the number of moles of Al present, n=0.27 mol, then use the mole ratio in the equation to determine that this releases 0.40 mol of H_2, with a …

Feb 21, 2018 · We first need to convert the amount of barium carbonate into moles. Barium carbonate BaCO3 has a molar mass of 197.34 g/mol. Here, there are 8 grams of barium …