Which has the least gravitational potential energy? a 25 kg barbell above the head of a weightlifter or a 10 kg barbell resting on the floor

What is the h+ concentration for an aqueous solution with poh = 4.01 at 25 ∘c? express your answer to two significant figures and include the appropriate units.

What are the genotypic and phenotypic ratios

How many moles are contained in 5.6 l of h2 at stp