Which of the following reactions is not a replacement reaction?
fe + cuso4 → feso4 + cu
2na + 2h2o → 2naoh + h2
zn + 2hcl → zncl2 + h2
2na + cl2 → 2nacl

The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?

What is the overall order of reaction for rate = k[no]2[o2]

Which three statements represent the benefits of performing experiments using computer simulations?