How many milligrams are there in 0.0042 mol of sodium oxide?
To determine the number of milligrams in 0.0042 mol of sodium oxide, you first need to calculate the molar mass of sodium oxide (Na2O).
The molar mass of Na2O is:
2(Na) + 1(O) = 2(22.99 g/mol) + 16.00 g/mol = 45.98 g/mol
Now, you can convert the molar quantity to grams by multiplying by the molar mass:
0.0042 mol * 45.98 g/mol = 0.192876 g
Lastly, convert grams to milligrams by multiplying by 1000:
0.192876 g * 1000 mg/g = 192.876 mg
Therefore, there are 192.876 milligrams in 0.0042 mol of sodium oxide.