Answer the given questions. Write down your answer and solutions clearly. 1. Sterling silver contains 93.5% silver, if a necklace made of sterling weighs 15g. What is the mass of the silver dissolved contained in the necklace? A) 1.6 g B) 6.2 g C) 9.0 g D) 14.0 g 2. Rubbing alcohol is commonly used as an antiseptic for small cuts. It is sold as a 70% solution of isopropyl alcohol in water. What volume of isopropyl alcohol is used to make 500 mL of rubbing alcohol? A) 35.0 mL B) 350 mL C) 3.50 mL D) 0.350 mL 3. What is the concentration, in % (m/v) of a solution containing 15.0 g KCl in 600.0 mL solution? A) 5.00% B) 2.00%
Answer the given questions. Write down your answer and solutions clearly. 1. Sterling silver contains 93.5% silver, if a necklace made of sterling weighs 15g. What is the mass of the silver dissolved contained in the necklace? A) 1.6 g B) 6.2 g C) 9.0 g D) 14.0 g 2. Rubbing alcohol is commonly used as an antiseptic for small cuts. It is sold as a 70% solution of isopropyl alcohol in water. What volume of isopropyl alcohol is used to make 500 mL of rubbing alcohol? A) 35.0 mL B) 350 mL C) 3.50 mL D) 0.350 mL 3. What is the concentration, in % (m/v) of a solution containing 15.0 g KCl in 600.0 mL solution? A) 5.00% B) 2.00%
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Answer the given questions. Write down your answer and solutions clearly.
1. Sterling silver contains 93.5% silver, if a necklace made of sterling weighs 15g. What is the mass of the silver dissolved contained in the necklace?
A) 1.6 g
B) 6.2 g
C) 9.0 g
D) 14.0 g
2. Rubbing alcohol is commonly used as an antiseptic for small cuts. It is sold as a 70% solution of
isopropyl alcohol in water. What volume of isopropyl alcohol is used to make 500 mL of rubbing
alcohol?
A) 35.0 mL
B) 350 mL
C) 3.50 mL
D) 0.350 mL
3. What is the concentration, in % (m/v) of a solution containing 15.0 g KCl in 600.0 mL solution?
A) 5.00%
B) 2.00%
C) 0.200%
D) 2.50%
4. What volume of 0.250 M KOH solution contains 6.31 grams of KOH?
A) 631 mL
B) 28.11 mL
C) 450 mL
D) 0.449 mL
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