Answered: Predict the chemical formula for the…

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

Chapter3: Stoichiometry

Section: Chapter Questions

Problem 171CP: Consider the following data for three binary compounds of hydrogen and nitrogen: %H (by Mass) %N...

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2. Predict the chemical formula for the ionic compound formed by the elements Sr and Cl.

3. Predict the chemical formula for the ionic compound formed by the elements K and S.

4. Predict the chemical formula for the ionic compound formed by the elements Ba and S.

5. Predict the chemical formula for the ionic compound formed by the elements Ag and N.

6. Write the empirical formula corresponding to arginine, C₆H₁₄N₄O₂.

7. An unknown element X has the following isotopes: ⁵⁸X (68.00% abundant), ⁶⁰X (26.00% abundant), ⁶²X (6.00% abundant). What is the average atomic mass in amu of X?

8. An unknown element is a mixture of isotopes ¹²⁰X and ¹²²X. The average atomic mass of X is 120.37 amu. What is the percent abundance of ¹²²X?

9. You are working to earn enough money for a vacation which costs 1300.0 dollars. Your take-home pay is $16.50/hour, but you only work 4-hour shifts each day. How many days will it take for you to earn enough money to pay for your vacation if all the money you earn goes towards your vacation?

10. A typical human body contains between 9 and 12 pints of blood. A woman's body contains 10.45 pints of blood and the density of hemoglobin in her blood is 13.5 g/dL. What is the mass in grams of hemoglobin that would be found in 10.45 pints of her blood? (1 gallon = 3.785 L, 1 gallon = 8 pints).

11. A chemist encounters an unknown metal. They drop the metal into a graduated cylinder containing water, and find the volume change is 6.1 mL. If the metal weighs 3.3 g, what is the density of the metal in g/mL?

12. A chemist has a block of lead metal (density is 11.3 g/mL). They drop the metal into a graduated cylinder containing water, and find the volume change is 2.70 mL. What is the mass of the block, in grams?

13. A student is determining the density of an unknown metal with a mass of 56.5 g. The student partially fills a graduated cylinder with water and measures the volume of the water by itself as 54.8 mL. The student then adds the metal to the water and measures the new volume as 87.3 mL. What is the density, in g/mL, of the metal?

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