chemistry drill 1

1. Prove that Boyle’s Law exist by indicating that the volume (375.35 mL) at 1.85 atm pressure increases if we decrease the pressure by half.
Ans: 750.7 mL

2. What is the final temperature (in Fahrenheit) at 43.85 mL if the initial temperature at 78.35 is 2988.15 K?
Ans: -159.31 oF

3. Prove that an 8 oz coke (P = 9.85 atm) has lesser pressure than 12 oz?
Ans: Unable to prove since the P at 12 oz is 0.57 atm. It violates the Law

4. Find the moles of a perfect gas if the pressure is 1385 mmHg with a volume of 500 mL at a temperature of 175 oF.
Ans: 0.03 moles

5. Iceman produced an ice cube with a density of 0.95 g/mL and a mass of 25.35 g. If the original volume of the ice is 283.45 mL at 2.75 moles, what is the original number of moles of the ice?
Ans: 0.00364 moles

6. An inflatable balloon at 35 oC can accommodate 32 L of gas. How much temperature is needed to fill the balloon with 1,785 L of gas?
Ans: 1952.34 oC

7. An ideal gas originally has 2222 mmHg pressure, 235 mL volume, and 0.85 moles at 37 oC. If the pressure and volume are doubled, and the mole increased by 75%, what is the final temperature?
Ans: 708.91 K

8. What is the pressure (mmHg) of an 8 oz ideal gas if the number of moles present at 28 oC is 0.5 moles? (1 oz = 29.6 mL)
Ans: 39,676.00 mmHg

9. How much did the volume increases (in %) at 38 oC if the original volume at 29 oC is 32 mL?
Ans: 23.68 % (volume is 41.93 mL)

10. Construct a data for Pressure, volume temperature and number of moles for an ideal gas. Use the ideal gas equation.
Ans: Any data would do as long as the final answer for PV/nT is 0.0821

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