It is a covalent compound.
Answer: 19.6%
Explanation: percent by mass =
100 × ((mass of solute (g)) ÷ (mass of solute + mass of solvent (g)))
100 × ((22.0gHCl) ÷ (22.0gHCl + 90.0gH20)) = 19.6%
Answer:
The penny now weighs 0.0025kg
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0.200kj i think this is right but might not. 99.9%bsure that it is right