What is the mass of helium gas he in a 2.0 L balloon at 1.04 atm and 25 OC?

The mass of helium present is 0.36 g .

What happens to the volume of a balloon when the balloon is cooled?

Explanation 1: The volume of the balloon decreases by the low temperature, because the gas inside is cooled down. At room-temperature the helium balloon is lighter than air with the same volume of the air, which makes it go up. By the low temperature the pressure of the gas inside the balloon tends to decrease.

What happens to the size of the balloon when the temperature is increased?

In a balloon when the temperature increases, the individual gas molecules that you can’t see but that make up gases start moving really fast. When the molecules are moving fast under higher temperatures, they run into the sides of the balloon more often making the balloon bigger.

What happens to the volume of a balloon when it is squeezed?

By squeezing the balloon, you reduce the space the gas particles can occupy. As the particles are pushed a bit closer together, they collide with more, so the pressure from the moving gas particles increases. According to Boyle’s Law, the volume of a fixed amount of gas decreases as its pressure increases.

What is the mass of helium gas in a balloon?

4.00 g/mol
Helium, which has a mass of 4.00 g/mol, has a density of 0.164 g/l. Thus, a one-liter balloon of helium can lift a mass of (1.18-0.164) = 1.02 g.

Does balloon have volume?

So, we can confidently say that for the gas inside the balloon, the volume of the gas, and therefore the volume of the balloon, is directly proportional to the temperature of the gas, which is also the air temperature. In other words, on the cold day, the balloon has a smaller volume than on the hot day.

What happened to the size of balloon?

The frozen balloon shrank because the average kinetic energy of the gas molecules in a balloon decreases when the temperature decreases. This makes the molecules move more slowly and have less frequent and weaker collisions with the inside wall of the balloon, which causes the balloon to shrink a little.

What happens to the volume of a gas inside a balloon if you keep on inflating it?

Robert Boyle, a chemist and physicist from the 17th century, discovered that the volume of gas, meaning how much space it occupies, is related to its pressure—and vice versa. He found that if you pressurize a gas, its volume contracts. If you decrease its pressure, its volume increases.

What is the volume of a weather balloon filled with helium?

A weather balloon is filled with 1.0 L of helium at 23 °C and 1.0 atm. What volume does the balloon have when it has risen to a point in the atmosphere where the pressure is 220 torr and the temperature is -31 °C? And for a constant quantity of gas….the old combined gas equation gives….

What is the density of the gas in a balloon?

Basing on your question, density of gas = 0.179 kg/m^3 and volume of the balloon is 4/3 * pi * (4.9 m)^3. The actual lifting ability of each gas varies with temperature, pressure, and humidity. The formula used is Buoyant force = Volume of gas * (density of air – density of gas) * acceleration due to gravity.

What is the buoyant force of helium at STP?

If the volume is 1 m^3; the density of air at STP is 1.225 g/L or 1.225 kg/m^3 and g = 9.8 N/kg the buoyant force for one m^3 of helium in air at sea level is: 1 m^3 × 1.046 kg/m^3 × 9.8 N/kg = 10.25 N. Basing on your question, density of gas = 0.179 kg/m^3 and volume of the balloon is 4/3 * pi * (4.9 m)^3.

How do you find the volume of a gas in Kelvin?

It states that the volume of a gas is directly proportional to the Kelvin temperature, while pressure and amount are held constant. The equation is V 1 T 1 = V 2 T 2, where V is volume and T is temperature in Kelvins. Rearrange the equation to isolate V 2. Substitute the known values into the equation and solve.