shalomsigalow196 shalomsigalow196

27-12-2022
Chemistry

Answered

a sample of he gas is observed to effuse through a pourous barrier in 8.76 minutes. under the same conditions, the same number of moles of an unknown gas requires 29.0 minutes to effuse through the same barrier. the molar mass of the unknown gas is

Answer :

Other Questions

what is the molar volume of ne gas under the conditions of temperature and pressure where its density is 0.941 g/l?

a sample of krypton gas occupies a volume of 9.77 l at 58 oc and 357 torr. if the volume of the gas sample is decreased to 8.41 l, while its temperature is incr

two sealed tanks each contains gas at 273 k. tank a contains 9.00 g of argon gas, and tank b contains 18.7 g of chlorine gas.a. how many moles of gas are in eac

a sample of co2 gas has a pressure of 48.7 mm hg in a 125-ml flask. the sample is transferred to a new flask, where it has a pressure of 76.0 mm hg at the same

A mixture of 1.00 g h2 and 1.00 g he is placed in a 1.00-l container at 27°c. calculate the partial pressure of each gas and the total pressure.

when 81.9 g of calcium and 40.0 g of nitrogen gas undergo a reaction that has a 80.0% yield, what mass of calcium nitride forms

Chemists can identify the composition of some unknown salts by conducting a flame test. When potassium salts are heated in a flame, a purple color is observed.

a mixture of neon and helium gases is maintained in a 6.41 l flask at a pressure of 1.79 atm and a temperature of 78 oc. if the gas mixture contains 3.66 grams

a 0.260-g sample of naoh(s) is added to enough water to make 250.0 ml of solution. the ph of this solution is:

after 5 half-lives pass, how much of the original sample of 600 radioactive atoms is left? round to the nearest whole number.