Question

Learning Task 3: Calculate the percent mass of each element of a compound
NaHSO3 (Na = 23.0 g/mol; H = 1.008 g/mol; S = 32.0 g/mol; O = 16.0 g/mol). After
getting the percent mass, divide the circle to the computed percentage of each
corresponding element. (Note that the circle is equivalent to 100% as a whole; you
can use several colors to represent each percent mass of the elements.)​

Answer 1

Answer:

Percentage composition of a compound is a ratio of an amount of each element to the total amount of individual elements in a compound, which is then multiplied with 100. Let us take an example of H2O i.e. Water. Water has 2 molecules of hydrogen, and one mole of water is of 18.0152 grams. And one mole of a hydrogen atom is of 1.008 grams. So, 2 hydrogen moles weighs 2.016 grams. Hence, one mole of water has 2.016 grams of hydrogen mole. Therefore, the percentage composition of hydrogen would be 2.016/18.0152 = 11.19%. Now let us study in detail about Percentage composition and its formula