True some explanations are not always based on empirical evidence
First calculate for the molar mass of the given formula unit, CaCO₃. This can be done by adding up the product when the number of atom is multiplied to its individual molar mass as shown below.
molar mass of CaCO₃ = (1 mol Ca)(40 g Ca/mol Ca) + (1 mol C)(12 g of C/1 mol of C) + (3 mols of O)(16 g O/1 mol O) = 100 g/mol of CaCO₃
Then, divide the given amount of substance by the calculated molar mass.
number of moles = (20 g)(1 mol of CaCO₃/100 g)
number of moles = 0.2 moles of CaCO₃
<em>Answer: 0.2 moles</em>
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That water is a universal solvent and that sugar is soluble?
Answer:
I think he likes you or at least has some intrest in you
Explanation:
Guys aren't very direct when they like a girl so sometimes its hard to tell but usually a guy will playfully joke with you and be curious about your interests when he likes you
