Question

Определите объем, который займут 0,25 моль водорода? Это 9 класс. Подробно, пожалуйста)))

Answer 1

V=0,25 моль*22,4л/моль=5,6л

Answer 2

Calculating the Volume Occupied by 0.25 Moles of Hydrogen

To calculate the volume occupied by 0.25 moles of hydrogen, we can use the ideal gas law equation, which is expressed as:

PV = nRT

Where: - P is the pressure of the gas - V is the volume the gas occupies - n is the number of moles of the gas - R is the ideal gas constant - T is the temperature of the gas in Kelvin

Given that the question doesn't specify the pressure or temperature, we can assume standard temperature and pressure (STP) for simplicity. At STP, the pressure is 1 atmosphere and the temperature is 273.15 Kelvin.

Using the ideal gas law at STP, we can rearrange the equation to solve for volume:

V = (nRT) / P

Substituting the given values: - n = 0.25 moles - R = 0.0821 L·atm/(K·mol) (ideal gas constant) - T = 273.15 K (at STP) - P = 1 atm (at STP)

We can now calculate the volume occupied by 0.25 moles of hydrogen.

Calculation

Using the ideal gas law equation:

V = (0.25 moles * 0.0821 L·atm/(K·mol) * 273.15 K) / 1 atm

V ≈ 5.66 liters

Therefore, 0.25 moles of hydrogen will occupy approximately 5.66 liters of volume.

This calculation assumes ideal gas behavior and standard temperature and pressure (STP).