# Science

Concentrated phosphoric acid is 90% by mass and the remaining mass is water.The molarity of phosphoric acid in 90% is 12.2M at rtp.
a)What is the density of the solution at rtp ?
b)What volume (in mL)of this solution is needed to make a 1.00L solution of a 1.00M phosphoric acid ?
Please show working

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1. 25.6g

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2. I am confuse

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