The volume is 0.887 L.
152
The number of moles of helium is 0,32.
1 mole occupies 22.414 liters So, 1.84 moles will occupy 41.242 liters
1 mole occupies 22.414 liters So, 3.30 moles will occupy 73.966 liters.
1 mole He is 4.0 g. Use as a conversion factor to change 0.12 g He to moles.
The pressure is 2,02 atmospheres.
At standard temperature and pressure, 1 mole of any gas will occupy 22.4 liters. Set up a direct proportion of 22.4 liters/1 mole = 1 liter/x moles and solve for x. You get 0.045 moles.
Some conversion required. (mmolar into mol, or moles into mmol ) Molarity = moles of solute/Liters of solution 100 millimolar = 0.1 M glycine Molarity = moles of solute/Liters of solution manipulate algebraically Liters of solution = moles of solute/Molarity 0.005 mole glycine/0.1 M glycine = 0.05 Liters ( 1000 ml/1 L) = 50 milliliters of solution --------------------------------
Helium is 4g/mol, so 6.46g of helium is 6.46/4=1.62 moles He.
6675 moles Moles = weight (in g) / atomic weight = 26700 g / 4 = 6675 moles
H2O or water doesn't have any helium in it.
The mass of 1,5 moles of helium is 6,003 903 g.