PLEASE HELP ASAP!

What mass of Na2SO4 is needed to make 2.5 L of 2.0 M solution? (Na = 23g; S = 32g; 0 = 16g)

A. 178g

B. 284g

C. 365g

D. 710g**

will mark brainliest!

2points what is the job of a scientist? a. to answer ethical questions. b. to write laws based on his or her knowledge. c. to ask and answer scientific questions. d. to ignore facts that do not support his or her theory.

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What relationship exists between an enzyme and a catalyst?