Question

You are provided with 80% H2 SO4 w/w having density 1.8 g cm. How much
volume of this H2SO4 sample is required to obtain one dm' of 20% w/w H2SO4
which has a density of 1.25 g cm
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Answer 1

Explanation:

So, one mole of NaCl weighs 58.44 g. A 2.5 M solution is 2.5 moles per liter (Molarity is just the number of moles per liter). Therefore, 0.5 L would contain 1.25 mol. Hence, you would need 1.25 × 58.44 g = 73 g

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