Question

There is 13kg helium at the beginning of 20C temperature and 110kpa pressure in a fixed volume container. After helium is pressed into the container, the final pressure increases to 260kpa and 27C. How many kg of helium added to the container?

Answer #1

A balloon contains Helium (a monatomic ideal gas) at a pressure
of 101325Pa and temperature of 20.0◦C. Please note that the
pressure inside of a balloon must always equal the atmospheric
pressure outside of the balloon.
(a) If the volume of the balloon is 0.015m3, how many moles of
Helium are inside the balloon?
(b) What is the rms speed of the Helium in the balloon? (The
molar mass g
of Helium is 4.002602mol.)
(c) If the temperature of the...

20 moles of ideal helium gas are initially at standard
temperature and pressure. The gas undergoes a change such that the
pressure is doubled and the temperature is halved. (a) What is the
final volume in cubic meters? (b) lf the mass of a helium atom is
6.69 x 10'27 kg, what is the mean squared speed of the helium atoms
in the final state?

Helium gas with a volume of 2.60 L , under a pressure of 0.160
atm and at a temperature of 43.0 ∘C, is warmed until both pressure
and volume are doubled.
Part A
What is the final temperature?
Express your answer using three significant figures.
Part B
How many grams of helium are there? The molar mass of helium is
4.00 g/mol.

A cylinder with a movable piston contains 2.00 g of helium, He,
at room temperature. More helium was added to the cylinder and the
volume was adjusted so that the gas pressure remained the same. How
many grams of helium were added to the cylinder if the volume was
changed from 2.00 L to 2.526 L ? (The temperature was held
constant.)
Enter your answer in units of grams.
Please show all work

A sample of helium gas collected at a pressure
of 0.755 atm and a temperature of
281 K is found to occupy a volume of
845 milliliters. How many moles of
He gas are in the sample?

In an ideal standard dual cycle, the pressure and temperature at
the beginning of compression are 1 bar and 47°C, respectively. The
heat supplied in the cycle is 1250kJ/kg, two third of this heat is
being added at constant volume and the remaining heat is added at
constant pressure. If the compression ratio is 16, determine
1)the maximum temperature in the cycle.
2)the thermal efficiency of the cycle.
3)the mean effective pressure.

A closed container with volume of 6.50 L holds 10.8 g of liquid
helium at 3.00 K and enough air to fill the rest of its volume at a
pressure of 1.00 atm. The helium then evaporates and the container
warms to room temperature (293 K). What is the final pressure
inside the container?
atm

4. 20 moles of ideal helium gas are initially at standard
temperature andpressure. The gas undergoes a change such that the
pressure is doubled andthe temperature is halved. (a) What is the
final volume in cubic meters? (b) lf the mass of a helium atom is
6.69 x 10^27 kg, what is the mean squared speed of the helium atoms
in the final state?

A sample of helium gas at a pressure of 853 mm Hg and a
temperature of 47 °C, occupies a volume of 5.40 liters. If the gas
is heated at constant pressure to a temperature of 73 °C, the
volume of the gas sample will be __________ L.

A mixture of nitrogen (N2) and helium has a volume of 290 mL at
26 ∘C and a total pressure of 745 mmHg .
(A.) If the partial pressure of helium is 35 mmHg , what is the
partial pressure of the nitrogen?
(B.) At this temperature and at the partial pressure in Part A,
how many moles of nitrogen gas are in this container assuming ideal
conditions?

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 32 minutes ago

asked 34 minutes ago

asked 43 minutes ago

asked 54 minutes ago

asked 54 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago