The rate law for a hypothetical reaction is rate = k [a]2. when the concentration is 0.10 moles/liter, the rate is 2.7 × 10-5 m*s-1. what is the value of k?
2.7 × 10-3
2.7 × 10-3 m-1s-1
7.2 × 105 m-1s-1
2.7 × 10-4 m-1s-1

What is the molality of a solution that has 4 mol of kci in 0.800 kg of water

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.

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8