The measured density oe He at NTP is 0.1784g/l.what is the weight of one mole?
P*molar mass = density*R*T
Substitute P, d, R and T and solve for molar mass.
By using 22.4 ..
To find the weight of one mole of helium (He), you need to know the molar mass of helium.
The molar mass of helium (He) is approximately 4 grams per mole (g/mol).
To determine this, you can look up the atomic mass of helium on the periodic table. Helium has an atomic mass of around 4 atomic mass units (amu). Since 1 amu is approximately equal to 1 gram per mole, the molar mass of helium is approximately 4 g/mol.
Now that you know the molar mass of helium, you can calculate the weight of one mole.
Given that the density of helium at NTP (Standard Temperature and Pressure) is 0.1784 g/l, this means that in one liter of helium at NTP, there is a mass of 0.1784 grams.
Using this information, we can calculate the number of moles in one liter of helium using the equation:
moles = mass (g) / molar mass (g/mol)
moles = 0.1784 g / 4 g/mol
moles = 0.0446 mol
Therefore, the weight of one mole of helium (He) is approximately 4 grams.