I NEED HELP ASAP Please thanks!! (multiple choice)

1) Which one of the following statements is FALSE?
Select one:
a. Water reaches its maximum density at 4°C.
b. The density of water is temperature dependent.
c. The mass of a sample of water is unchanged when it expands.
d. The density of water is unaffected by minor expansion or contraction.

2) Which statement best describes the data below if the real value is 14.5 m?
i) 14.4 m, ii) 14.5 m, iii) 14.6 m, iv) 14.5 m
Select one:
a. accurate and precise
b. neither accurate nor precise
c. accurate but not precise
d. precise but not accurate

1.aluminum chloride (alcl3), and sodium hydroxide (naoh) can react to form aluminum hydroxide (al(oh)3) and sodium chloride (nacl).    you have 13.4 g of aluminum chloride and 10.0 g of sodium hydroxide. answer the following questions: •what is the balanced equation for this reaction? •if you use all 13.4 g of aluminum chloride, how many grams of aluminum hydroxide can be formed? work must be shown to earn credit •if you use all 10.0 g of sodium hydroxide, how many grams of aluminum hydroxide can be formed? work must be shown to earn credit •how many grams of aluminum hydroxide will actually be made?     which reagent is limiting? explain your answer.

What forms when chemical reactions combine pollution with sunlight?

Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate → enzyme-substrate complex (b) enzyme + substrate ←−→ enzyme + products (c) enzyme + substrate ←−→ enzyme-substrate complex → enzyme + products (d) enzyme + substrate ←−→ enzyme-substrate complex → enzyme-substrate complex + products