A mixture of gases contains 8. 00 g of he, 29. 96 g of ar, and 48. 00 g of o2. What is the mole fraction of he in this mixture?.

Agas occupies 475 cm^3 at 313k. find its volume at 367k. you must show all of your work to receive credit. be sure to identify which of the gas laws you will be using

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

How do you lengthen a pattern piece? (family and consumer science, sewing)