Question

Объем углекислого газа 112 мл Найти: А) число моль газа Б) Число молекул газа в) Число моль атомов кислорода г) массу газа

Answer 1

112 мл = 0,112 л
А)0,112/22,4 = 0,005 моль
Б)0,005*6,02*10^23 = 3.01*10^21 молекул
В)(3.01*10^21)*2/6,02*10^23 = 0,01 моль
Г) 0,005*44 = 0,22 г

Answer 2

Calculation of the Number of Moles of Gas (A)

To calculate the number of moles of gas, we can use the ideal gas law equation:

PV = nRT

Where: - P is the pressure of the gas (in atm) - V is the volume of the gas (in liters) - n is the number of moles of gas - R is the ideal gas constant (0.0821 L·atm/(mol·K)) - T is the temperature of the gas (in Kelvin)

Given that the volume of the gas is 112 mL, we need to convert it to liters by dividing by 1000:

V = 112 mL ÷ 1000 = 0.112 L

The temperature is not provided in the question, so we cannot calculate the number of moles of gas without this information.

Calculation of the Number of Gas Molecules (B)

To calculate the number of gas molecules, we can use Avogadro's number, which states that there are approximately 6.022 x 10^23 molecules in one mole of any substance.

Given that we don't have the number of moles of gas (n) or the identity of the gas, we cannot calculate the number of gas molecules without this information.

Calculation of the Number of Moles of Oxygen Atoms (C)

To calculate the number of moles of oxygen atoms, we need to know the molecular formula of the gas. Without this information, we cannot calculate the number of moles of oxygen atoms.

Calculation of the Mass of the Gas (D)

To calculate the mass of the gas, we need to know the molecular formula of the gas. Without this information, we cannot calculate the mass of the gas.

In summary, without additional information such as the temperature or the molecular formula of the gas, we cannot calculate the number of moles of gas, the number of gas molecules, the number of moles of oxygen atoms, or the mass of the gas.