Classify each chemical equation as a combination/synthesis, decomposition, single replacement , double replacement, or combustion
a. pb(s) + hg2so4 (s) > pbso4(s) +2 hg(i)
b. naci(aq) + agno3(aq) > agci(s) +nano3(aq)
c. 2h20(> 2h2(g) + 02(g)

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

Which of the following words describe the reality that the universe looks the same from various perspective

The molar mass of nickel(ni) is 58.7 g/mol. how many moles are in an 88 gram sample of nickel?