I definitly believe the answer is c. 2
Answer:
all
Explanation:
it can be from all as some plants are hydrotrophic i.e. they get attracted to water but some get away from water. Same sunflower faces sun from morning to evening but some plants get burnt while in sun.
I'm in the car now so can't lookup periodic table. But you find molecular weight of: 1 Ca + 2 Cl
Then that
Answer:
It depends what other values you have. Can you give more info? If they give density then you can solve for m.
Both liquids and gasses are fluids is the answer