Table of Contents
- 1 How many moles of helium gas are in a balloon?
- 2 What will happen to the volume of the air in the balloon when the balloon is placed into the beaker of hot water?
- 3 How do you find the number of moles of a gas?
- 4 What makes the balloon inflate?
- 5 What is the volume of helium in a weather balloon?
- 6 How many particles are in a mole of a gas?
How many moles of helium gas are in a balloon?
Balloon 1 contains 1 L of helium gas. Balloon 2 contains 1 L of nitrogen gas. Balloon 3 contains 1 L of argon gas….Theory: Avogadro’s Principle.
| Constant Temperature and Pressure | ||
|---|---|---|
| Moles of He(g) atoms (mol) | Volume of Balloon (L) | Volume ÷ Moles |
| 2 | 49.58 | 49.58 ÷ 2 = 24.79 |
| 3 | 74.37 | 74.37 ÷ 3 = 24.79 |
| 4 | 99.16 | 99.16 ÷ 4 = 24.79 |
What will happen to the volume of the air in the balloon when the balloon is placed into the beaker of hot water?
When you put the bottle with the balloon into the first jar, the hot water heats up the air in the bottle and makes it expand. The expanding gas blows up the balloon. When you put the bottle into cold water, the air cools down again. Cool air hasn’t got as much energy, so it shrinks – and the balloon shrinks with it.
What is the pressure inside a balloon which is inflated in a single breath?
Hence, the pressure applied to the balloon is 140 N/m².
How do you find moles of helium?
- The given mass of Helium =52g.
- Thus the number of moles of Helium =givenmass/molarmass.
- =52/4.
- =13.
How do you find the number of moles of a gas?
Multiply the volume and pressure and divide the product by the temperature and the molar gas constant to calculate moles of the hydrogen gas. In the example, the amount of hydrogen is 202,650 x 0.025 / 293.15 x 8.314472 = 2.078 moles.
What makes the balloon inflate?
Warm air is less dense than cold. Since warm air takes up more space than the same amount of cold air it makes the balloon inflate.
What is the volume of an inflated balloon at sea level?
An inflated balloon has a volume of 6.0L at sea level (1 atm) and is allowed to ascend in altitude until the pressure is 0.45 atm. During ascent the temperature of the gas falls from 22oC to -21oC.
What is the temperature at which the sample occupies 292 ml?
The next day, the sample occupies 292 mL at a temperature of 11°C. What is the new pressure of the gas? A balloon is inflated with 2.42 L of helium at a temperature of 27°C. Later, the volume of the balloon has changed to 2.37 L at a temperature of 19°C and a pressure of 99.7 kPa.
What is the volume of helium in a weather balloon?
A weather balloon contains 59.5 L of helium at sea level, where the atmospheric pressure is 101.3 kPa. The balloon is released from a 4000m mountain top where the pressure is 61.7 kPa. What is the volume of the balloon when it is released?
How many particles are in a mole of a gas?
1 mole of any gas a 0oC and 1 atm will contain 6.02 x 1023 particles and will occupy a volume of 22.4L. Avogadro Avogadro’s law states that the volume of a gas maintained at constant temperature and pressure is directly proportional to the number of moles of the gas.