When heating a chemical solution over an open flame in a test tube you should - a. keep a cork in the test tube so the solution cannot spill out. b. put your safety goggles on once the solution gets really hot. c. use several paper towels to pick up the hot test tube when it is ready. d. make sure the test tube is not pointing towards you or your classmates.

Hello.

The answer is:  A. keep a cork in the test tube so the solution cannot spill out

B and C both could be very deadly and it shouldnt be D because if u have an open flame you shouldnt open it even if its not towards anyone.

have a nice day

the child will have heterozygous dominant chromosomes as characters of his father are dominant over the characters of his mother.

the child is heterozygous

that's what i got you can count the number of atoms