118. Solving a chemistry problem
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118. Solving a chemistry problem
18. What is the content of CaO (% wt.) in limestone if, when determining calcium from a sample of 0.3025 g, 0.2505 g of CaSO4 precipitate (gravimetric form) was obtained. Mol. mass (CaO) 56.08; they say mass (CaSO4) 136.14.
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