Surely you haven't typed all of the question. What gas is collected? Is it collected over water or not. What is the temperature? The pressure surely is not 298 mm Hg.
Use PV = nRT.
P = (mmHg - mmHg vapor pressure H2O/760)
V = 0.0255
n = 24.3/atomic mass Mg
R = solve for this
T = 273 + celsius.
A student following the procedure described in this experiment collected the following data:
Mass Mg,g 0.0243
volume of gas mL 25.5
barometric pressure, mm Hg 298
Calculate the value of the gas law constant, R.
Please help me work this out, I have no idea. Thank you!
1 answer