Copper has a density of 8.92 g/cm^3 at 20.0 degrees C and 8.83 g/cm^3 at 100 deg

Question

Copper has a density of 8.92 g/cm^3 at 20.0 degrees C and 8.83 g/cm^3 at 100 degrees C Calculate the change in volume in cm^3 that occurs when a 10.0 cm^3 piece of copper is heated from 20.0 degrees C to100.0 degrees C
2. A 3.00 L sample off helium at 0.00 degrees C and 1.00 atm is compressed into a 0.50 L of cylinder. What pressure in atm will the gas exert in the cylinder at 50 degrees C? Copper has a density of 8.92 g/cm^3 at 20.0 degrees C and 8.83 g/cm^3 at 100 degrees C Calculate the change in volume in cm^3 that occurs when a 10.0 cm^3 piece of copper is heated from 20.0 degrees C to100.0 degrees C
2. A 3.00 L sample off helium at 0.00 degrees C and 1.00 atm is compressed into a 0.50 L of cylinder. What pressure in atm will the gas exert in the cylinder at 50 degrees C?
2. A 3.00 L sample off helium at 0.00 degrees C and 1.00 atm is compressed into a 0.50 L of cylinder. What pressure in atm will the gas exert in the cylinder at 50 degrees C?

Explanation / Answer

# 1)

At 20 degrre C, mass of the piece at 100 degree C = density x volume = 8.92 x 10 = 89.2 g

At 100 degree C volume of the piece = 89.2 g / 8.83 g/cc = 10.10 cm^3

change in the volume = 10.10 - 10.0 = 0.1 cm^3

2)

P1V1 / T1 = P2V2/T2

1.00 x 3.00 / 272 = P2 x 0.50 / 323

=> P2 = 3.55 atm

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.