Can someone me, ?
organic, biological, and nuclear chemistry.

19. with a 1.0–2.0 sv dosage of radiation, an individual can expect to
a. hemorrhage.
b. see no immediate effect.
c. have nausea and hair loss.
d. die.

20. the structure of 3-propylpentane is best described as
a. a five-carbon chain with a three-carbon branch on the third carbon in the chain.
b. a three-carbon chain with a three-carbon branch on the third carbon in the chain.
c. a three-carbon chain with a five-carbon branch on the fifth carbon in the chain.
d. a five-carbon ring with a three-carbon branch on the third carbon in the ring