24-05-2022
Chemistry

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The student did another experiment using 20 cm of sodium hydroxide solution with a concentration of 0.18 mol / dm'. Relative formula mass (M) of NaOH = 40 Calculate the mass of sodium hydroxide in 20 cm' of this solution.

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24-05-2022

Answer:0.144gWorking out:mol= conc x volume (in dm^3)mass = mol x RFFSo,mol = 0.18 x (20/1000) = 0.0036molMass= 0.036 x 40 = 0.144g.

Explanation:

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