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3 years ago

Need asap! Step-by-step pls: Determine the empirical formula: 32.37% Na, 22.58% S, 45.05% O

Chemistry

1 answer:

Ludmilka [50]3 years ago

8 0

1) divide each percentage by the relative atomic mass of the element

2) divide all results by the smallest number

3)multiply by a whole number to get the simplest whole number ratio (if necessary)

that is to say:

Na S O

32.37÷23 22.58÷32 45.05÷16

= 1.407 = 0.7056 = 2.816 (to 4 significant figures)

the smallest number here is 0.7056 so:

1.407÷0.7056 0.7056÷0.7056 2.816÷0.7056

=1.99 approx.2 = 1 3.99 approx. 4

here there is no need to carry out step 3 as ratio obtained is already a simplest whole number ratio

so empirical formula is: Na₂SO₄

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Need asap! Step-by-step pls: Determine the empirical formula: 32.37% Na, 22.58% S, 45.05% O​

Need asap! Step-by-step pls: Determine the empirical formula: 32.37% Na, 22.58% S, 45.05% O