How many grams of H2O would be needed to react with 2.0 mol HNO3?

Helium decays to form lithium. which equation correctly describes this decay?

Scientists have developed an explanation of a phenomenon from several verified hypotheses. the explanation has been confirmed through numerous experimental tests.which option best describes this explanation? a. scientific lawb. research questionc. hypothesisd. scientific theory

Which of these is a density dependent factor? a. epidemic b. earthquake c. drought d. hurricane