PHA 317 Exam 1 UPDATED ACTUAL Questions and CORRECT Answers

PHA 317 Exam 1 UPDATED ACTUAL
Questions and CORRECT Answers
Micrograms equivalent to 2.5 mg - CORRECT ANSWER - 2500 µg | Explanation: 1 mg =
1000 µg | Steps: 2.5 × 1000 = 2500 µg


Density with mass 25 g, volume 20 mL - CORRECT ANSWER - 1.25 g/mL | Explanation:
Density = m/V | Steps: 25 ÷ 20 = 1.25


Convert 298.16 K to °C - CORRECT ANSWER - 25 °C | Explanation: K − 273.16 | Steps:
298.16 − 273.16 = 25


Convert 104 °F to °C - CORRECT ANSWER - 40 °C | Explanation: Apply formula |
Steps: (104−32)×5/9 = 40


Specific gravity for 10 kg/m³ substance - CORRECT ANSWER - 0.01 | Explanation:
Convert to g/cc then divide by water density | Steps: 10 kg/m³ = 0.01 g/cc


Gas P decreases to 1/4, constant T: what happens to V? - CORRECT ANSWER - Volume
increases 4× | Explanation: Boyle's Law | Steps: V2=4V1


New pressure at 60 °C if P=2.5 atm at 30 °C - CORRECT ANSWER - 2.75 atm |
Explanation: Use P1/T1=P2/T2 | Steps: P2=2.5×(333/303)=2.75 atm


V change when T doubles at constant P - CORRECT ANSWER - V doubles | Explanation:
Charles' Law | Steps: V2=2×V1


Compute VP at 125 °C from 100 °C data - CORRECT ANSWER - ≈2.28 atm |
Explanation: Clausius-Clapeyron | Steps: log(P2)=ΔHv(T2−T1)/(2.303RT1T2) → P2≈2.28 atm