## How do you calculate gas pressure in water?

PV= nRT

- P = Pressure of the gas.
- V = Volume of water displaced.
- n = number of moles of gas.
- R = the ideal gas constant.
- T = the temperature of the gas.

### What is the formula of gaseous pressure?

If volume and temperature are held constant, the ideal gas equation can be rearranged to show that the pressure of a sample of gas is directly proportional to the number of moles of gas present: P=n(RTV)=n×const.

**What is the formula for volume pressure?**

PV = nRT

The equations describing these laws are special cases of the ideal gas law, PV = nRT, where P is the pressure of the gas, V is its volume, n is the number of moles of the gas, T is its kelvin temperature, and R is the ideal (universal) gas constant.

**How do you calculate pressure from volume of a gas?**

To find any of these values, simply enter the other ones into the ideal gas law calculator. For example, if you want to calculate the volume of 40 moles of a gas under a pressure of 1013 hPa and at a temperature of 250 K, the result will be equal to: V = nRT/p = 40 * 8.3144598 * 250 / 101300 = 0.82 m³ .

## What’s the vapor pressure of water?

Examples

Substance | Vapor pressure | |
---|---|---|

(Pa) | (mmHg) | |

Tungsten | 1 Pa | 0.0075 |

Xenon difluoride | 600 Pa | 4.50 |

Water (H2O) | 2.3 kPa | 17.5 |

### What is volume pressure?

Pressure multiplied by volume equals some constant k. where P is the pressure of the gas, V is the volume of the gas, and k is a constant. The equation states that the product of pressure and volume is a constant for a given mass of confined gas and this holds as long as the temperature is constant.

**What is p1 v1 P2 V2?**

The relationship for Boyle’s Law can be expressed as follows: P1V1 = P2V2, where P1 and V1 are the initial pressure and volume values, and P2 and V2 are the values of the pressure and volume of the gas after change.