Which of the following equilibrium reactions
is NOT affected by a change in pressure
caused by a volume change to the vessel?
1. 2 H2O2(ℓ) → 2 H2O(ℓ) + O2(g)
2. 2 CO2(g) → 2 CO(g) + O2(g)
3. 2 BrCl(g) → Br2(g) + Cl2(g)
4. H2(g) + Br2(ℓ) → 2 HBr(g)
5. H2(g) + I2(s) → 2 HI(g)

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by