Problem
1. A 15ml of Nacl was dissolved in 225g of water. What is percent by mass of Nacl in the solution?
A Given: solute=
solvent=
B. Unknown:
C. Formula:
D. Solution:
E. Answer:
1. A 15ml of Nacl was dissolved in 225g of water. What is percent by mass of Nacl in the solution?
A Given: solute=
solvent=
B. Unknown:
C. Formula:
D. Solution:
E. Answer:
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Answer:
Given:
mass of solute = 15mL of salt(NaCl)
mass of solvent = 225g of water
Unknown:
percent by mass
Formula:
[tex] \frac{mass \: of \: solute}{mass \: of \: solution} \times 100 \\ \\ \\ \frac{mass \: of \: solute}{mass \: of \: solute + mass \: of \: solvent} \times 100[/tex]
Solution:
[tex] \frac{15}{240} \times 100[/tex]
Answer:
% by mass = 6.25%