Finding Mass of a Reactant
A chemist reacts sodium metal (Na) and chlorine gas (CI) to form salt according to the balanced chemical
equation: Na + Cl - NaCl.
If the chemist has 35.0 g Na, what mass of chlorine must he or she use to react completely with the
sodium?
Finally, solve (remember significant figures):
35.0 g Na
1 mol Na 1 mol CT 35.4 g CI
22.9 g Na 1 mol Na 1 mol CT
T = Ag CI
AL
DONE
tivity

How does concentration affect reaction rate

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.

Molecular iodine, i2(g), dissociates into iodine atoms at 625 k with a first-order rate constant of 0.271 s−1. part a part complete what is the half-life for this reaction?