Element Q has to isotopes 88Q with a mass of 87.952 amu and 90Q with a mass of 89.9921 amu. The atomic mass of Q is 88.50 amu.!what is the percent abundance of each isotope

Summarize possible ways in which phases of matter could combine to form a solution.

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments

Equal numbers of moles of he(g), ar(g), and ne(g) are placed in a glass vessel at room temperature. if the vessel has a pinhole-sized leak, which of the following will be true regarding the relative values of the partial pressures of the gases remaining in the vessel after some of the gas mixture has effused?