A mixture of gases contains 0.25 mol of oxygen O2 1.30 mole argon At and 0.50 mol of methane CH4 1. What is the mole fraction of methane in the mixture
2. If the total pressure of the mixture is 2.50 atm what is the partial pressure of methane

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98