300.0 mL of a gas is at a pressure of 5.00 atm. What is the volume of the gas at 2.00 atm? A. 500 ml
B. 100 mL
C. 750 mL
D. 250 mL

H2so4(aq) + mg(s)—> mgso4(aq) +h2(g) which substance is the acid in the reaction?

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

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