pnhandley01
26.01.2021 •
Chemistry
134 grams of nitric acid is added to 512 grams of water. Calculate the molality of nitric acid.
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Ответ:
0.004 m
Explanation:
Given data:
Mass of nitric acid = 132 g
Mass of water = 512 g
Molality of nitric acid = ?
Solution:
Formula:
Molality = number of moles of solute / mass of solvent in Kg
Number of moles of nitric acid:
Number of moles = mass/molar mass
Number of moles = 132 g/ 63.01 g/mol
Number of moles = 2.09 mol
Molality:
m = 2.09 mol / 512 Kg
m = 0.004 m
Ответ:
Need more info tho