Chemistry · Mole concept, molar mass, percentage composition, empirical and molecular formulae
A solution is prepared by adding 2 g of substance to 18 g of water. The mass per
A solution is prepared by adding 2 g of substance \( A \) to 18 g of water. The mass percent of the solute is:
- A. 10
- B. 20
- C. 40
- D. 25
Step-by-step solution
Total mass = 2 g (solute) + 18 g (water) = 20 g. Mass percent = (2 g / 20 g) × 100% = 10%.
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