When testing a pure substance for its properties, some of the tests result in the sample being changed into another substance. Testing for which of these properties may result in the sample substance being changed into a different substance?
Choose the correct answer.

For the reaction, 4 a(g) + 3 b(g) => 2 c(g), the following data were obtained at constant temperature. experiment initial[a],mol/l initial [b],mol/l initial rate,m/min 1 0.200 0.150 5.00 2 0.400 0.150 10.0 3 0.200 0.300 10.0 4 0.400 0.300 20.0 which of the following is the correct rate law for the reaction? 1. rate = k[a]2[b]2 2. rate = k[a][b] 3. rate = k[a]2[b] 4. rate = k[a][b]2

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

How is the shape of the poem “peer” connected to its meaning?