Concentrated solution of HCl(%38 by mass)has a density of 1.19g/mL. a)calculate the mass of water H20 which is necessary to obtain 200g of 5% new HCl solution from the first solution.
b)What is the molar concentration of HCl in this concentrated solution?

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What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

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