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?.

What kind of ion is contained in salts that produce an acidic solution? a positive ion that attracts a proton from water a positive ion that releases a proton to water a negative ion that attracts a proton from water a negative ion that releases a proton to water

List four observations that indicate that a chemical reaction may be taking place

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?