2 revised 1 / 3 D - 125% + lo CHEM 102 Review Sheet for Exam 2 1. Use the table of data shown below to calculate the average rate of reaction bety Time (s) [A] mol/L (a) 6 x 10-3 0 0.20 5 0.14 (b) 8 x 10-3 10 0.10 15 0.071 (c) 5 x 10-3 20 0.050 (d) 200 2. Consider the following reaction. 3A + 2B The rate of disappearance of A is gi The rate of appearance of B in terms of the rate of disappearance of A is given by: (a) 2Δ[Α]/3Δt (b) -2Δ[Α]/3Δt (c) -3Δ[Α]/2Δt (d) -A[A 3. The table shown below contains concentration and rate data for this reaction. A-

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.