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Calculate: Calcium carbonate is the calcium source for many vitamin tablets. The recommended daily allowance for calcium is 1000 mg of Ca2+ ions. How many moles of Ca2+ does 1000 mg represent? (HINT: Make sure you convert mg of calcium to g, since molar mass is in units of g/mol).

Sagot :

Answer:

00.25 mol Ca²+ ions

Explanation:

mass of Ca² ions= 1000 mg = 1000 x 10-³ g = 1 g

molar mass of Ca² + ions = 40.08g /mol

mass x  1 mol/ grams = number of moles

1  g Ca²+ x 1 moles / 40.08 g Ca²+- 0.025 mol Ca²+

i hope that helps lol

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