A scientist fill a glass container with water and places an aquatic plant inside the container, then closes the lid and placed it in direct sunlight. The scientist observes small bubbles on the surface of the plant’s leaves on days 1 and 2, but no bubbles on day 3 the scientist concludes that the bubbles were caused by photosynthesis. Which substance should be added to the water in order for the bubbles to reappear?

there is none because earth is stationary and flat.

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.

the answer is c. nacl

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.