How do isotopes of carbon differ from one another?

The ph of carrots are 5.0 how it is classified a.acidic b.basic c.indicator d.neutral

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

Asample of ammonia reacts with oxygen as shown. 4nh3(g) + 5o2(g) 4no(g) + 6h2o(g) what is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen? o2 because it produces only 0.20 mol of no. nh3 because it produces only 0.20 mol of no. o2 because it produces two times less no than nh3. nh3 because it produces three times more no than o2.