Adding helium to a balloon increased its volume from 427.7 mL to 3.350 L. If the...
Adding helium to a balloon increased its volume from 427.7 mL to 3.350 L. If the final number of moles of helium in the balloon is 22.5 mol, what was the initial number of moles of helium in the balloon? Assume the balloon contained only helium initially. _______________________mol
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Adding helium to a balloon increased its volume from 427.7 mL to
3.350 L. If the...
A balloon filled with 35.6 moles of helium has a volume of 856 L at 0.0°C...
A balloon filled with 35.6 moles of helium has a volume of 856 L at 0.0°C and 1.00 atm pressure. The temperature of the balloon is increased to 43.0°C as it expands to a volume of 967 L, the pressure remaining constant. Calculate q, w, and ΔE for the helium in the balloon. (Given, the molar heat capacity for helium gas is 20.8 J/°C · mol, and 1 L·atm = 101.3 J) (Show your work)
A balloon originally has 0.10 moles of helium and has a volume of 0.50 L. If...
A balloon originally has 0.10 moles of helium and has a volume of 0.50 L. If 0.59 grams of He are added to the balloon, what will the new volume be, in L? (Assume temperature and pressure do not change.)
A balloon contains 0.125 mol of gas and has a volume of 2.86 L . If an additional 0.068 mol of gas is added to the ballo...
A balloon contains 0.125 mol of gas and has a volume of 2.86 L . If an additional 0.068 mol of gas is added to the balloon, what is its final volume? (Hint: The final number of moles is the sum of the initial number and the amount added.)
A helium-filled balloon at 1.00 atm pressure has a volume of 1.200 L. It is placed...
A helium-filled balloon at 1.00 atm pressure has a volume of 1.200 L. It is placed in a freezer and its volume decreases, stopping at 1.010 L. (Assume that the static internal and external pressures are equal, that the balloon contains only helium, and helium behaves as an ideal gas.) Calculate ΔE for the gas in the balloon.
A helium-filled balloon at 1.00 atm pressure has a volume of 1.320 L. It is placed...
A helium-filled balloon at 1.00 atm pressure has a volume of 1.320 L. It is placed in a freezer and its volume decreases, stopping at 0.990 L. (Assume that the static internal and external pressures are equal, that the balloon contains only helium, and helium behaves as an ideal gas.) Calculate ΔE for the gas in the balloon.
QUESTION 4 A balloon containing 2.1 moles of Helium takes up 2.3 L. If the balloon...
QUESTION 4 A balloon containing 2.1 moles of Helium takes up 2.3 L. If the balloon is opened and the amount of gas is reduced to 1.4 moles of Helium, what is its new volume (in L)? The temperature and pressure are held constant. A. 3.45 B. 1.5 C.8.0 1.3 QUESTION 5
A 1.2 mol sample of Kr has a volume of 867 mL. How many moles of...
A 1.2 mol sample of Kr has a volume of 867 mL. How many moles of Kr are in a 3.22 L sample at the same temperature and pressure? A 8.90 mol sample of freon gas was placed in a balloon. Adding 3.50 mol of freon gas to the balloon increased its volume to 13.4 L. What was the initial volume of the balloon? A mixture of He Ne, and Ar has a pressure of 20.7 atm at 28.0 °C....
a balloon sample of helium has a volume of 550 mL at a pressure of 1.0...
a balloon sample of helium has a volume of 550 mL at a
pressure of 1.0 atm. assuming no change in temperature or amount of
helium what is the new volume in mL if the pressure drops to 8.5
psi?
Question 29 Given 1 atm = 760 torr = 760 mmHg = 14.7 psi. A balloon sample of helium has a volume of 550 mL at a pressure of 1.0 atm. a. Assuming no change in temperature or amount of...
A 0.300 kg balloon is filled with helium until the volume of the balloon is 1.50m3....
A 0.300 kg balloon is filled with helium until the volume of the balloon is 1.50m3. The density of the contained helium is 0.178 kg/m3, and the density of the surrounding air is 1.29 kg/m3. What downward force must be applied to the balloon to prevent it from rising?
A helium-filled balloon has a volume of 2.9 L at 23◦C. The volume of the balloon...
A helium-filled balloon has a volume of 2.9 L at 23◦C. The volume of the balloon decreases to 2.5 L after it is placed outside on a cold day. What is the outside temperature in ◦C?
QUESTION 4 A balloon containing 2.1 moles of Helium takes up 2.3 L. If the balloon is opened and the amount of gas is reduced to 1.4 moles of Helium, what is its new volume (in L)? The temperature and pressure are held constant. A. 3.45 B. 1.5 C.8.0 1.3 QUESTION 5
a balloon sample of helium has a volume of 550 mL at a
pressure of 1.0 atm. assuming no change in temperature or amount of
helium what is the new volume in mL if the pressure drops to 8.5
psi?
Question 29 Given 1 atm = 760 torr = 760 mmHg = 14.7 psi. A balloon sample of helium has a volume of 550 mL at a pressure of 1.0 atm. a. Assuming no change in temperature or amount of...
A 0.300 kg balloon is filled with helium until the volume of the balloon is 1.50m3. The density of the contained helium is 0.178 kg/m3, and the density of the surrounding air is 1.29 kg/m3. What downward force must be applied to the balloon to prevent it from rising?
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