PDF chapter test TRY NOW
1. How many nitrogen atoms are in o.25 mol of \(Ca(NO_3)_2\)?
2. 0.2 mol of HCl and 0.1 mol of barium chloride were dissolved in water to produce a 500 mL solution. The molarity of the \(Cl^-\) ions is
Answer variants:
\(4.0\) × \(10^2{^3}\)
\(3.0\) × \(10^2{^3}\)
0.90 M
0.80 M
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