Consider the reaction of a to form b.2a(g) ↔ b(g) kc = 1.8 × 10-3 (at 298 k) a reaction mixture at 298 k initially contains [a] = 0.50m. what is the concentration of b when the reaction reaches equilibrium?

Which of the following provides support and protection for many insects a) muscle b) skeleton c) spinal cord d) exoskeleton

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth

Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.