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OpenStudy (anonymous):
A nutritional supplement contains 0.405 g of CaCO3. The recommended daily value of calcuim is 1.00g Ca. Find the mass in grams of calcium in 0.405g CaCO3. What percentage of the daily value of calcium comes from this tablet?
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OpenStudy (wolfe8):
Welcome to OpenStudy. Can you find the number of moles of 0.405 g and 1 g Ca? Use n=m/molar mass
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