# What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O?

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1. We do better with short posts. I'll help with the first. To do all of these takes too long for a single post.
What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O?

%by mass = g solute/100 g solution.
%NaCl = 3.55 g NaCl/(3.55g NaCl + 88 g H2O)*100 = ??

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2. how do you calculate the % by mass of 3.55g of NaCl in 88g of water?

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3. what is the percent by volume of isopropyl alcohol in a solution that contains 24 mL of isopropyl alcohol in 1.1L of water

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