For the reaction:
ch3i + cl− → ch3cl + i−
what is the change in enthalpy for the reaction, δrh, in units of kcal/mol? provide your answer to the nearest 0.1 kcal/mol.

This line graph compares the growth of plants that were kept in the sun for different amounts of time.a)  on day 7, the plants kept in the sun for 3 hours were how tall? b)  on day 7, the plants kept in the sun for 6 hours were how tall? c)    on day 10, the plants kept in the sun for 9 hours were how tall? d)  on day 11, the plant that was grown with 1 hour of sunlight was how tall? e)  based on the graph, the plant grows best in what amount of sunlight?

What reaction is taking place? 02 + c3h8 = h20 + co2

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123