Question

5.
1. Choose the correct answer
1. The value of universal gas constant
a) 3.81 mol Kb) 8.03 mol''K
c) 1.38 mol' K" d) 8.31 mol 'K
2. If a substance is heated or cooled, the
change in mass of that substance
a) positive
b) negative
c) zero
d) none of the above
II.
1.​

Answer 1

Answer:

first answer is

8.3J/mo