The concentration of carbon dioxide in parts per million (ppm) was measured for a closed container in several situations. Which of the following data collected would demonstrate the action of photosynthesis?

The data collected would demonstrate the action of photosynthesis as when the container included a plant exposed to light, carbon dioxide concentration went from 800 to 600 PPM

Explanation:

The data collected would demonstrate the action of photosynthesis as when the container included a plant exposed to light, carbon dioxide concentration went from 800 to 600 PPM.In a closed system, a decrease in carbon dioxide is evidence of photosynthesis, while an increase in carbon dioxide is evidence of cellular respiration. A plant in the dark will only carry out respiration, but in the light, the plant can carry out both respiration and photosynthesis.

Diethylether (DTH) andTetrahydrofuran (THF).

Explanation:

Grignard reactions reacts with water forming alkanes. The water present causes the reagent to decompose rapidly.      So, the solvents which are utilized in the experimental procedure to minimize exposure of the grignard reagents to air and/ormoisture are solvents such as anhydrous diethyl ether or tetrahydrofuran(THF), poly(tetramethylene ether) glycol (PTMG). The reason for the use of these solvents is the oxygen present in these solvents stabilizes the magnesium reagent. THF (Tetrahydrofuran) is a stable compound.