Please help i will literally mark you brainiest What are one advantage and one disadvantage of sexual reproduction?

Calculate the expected ph values of the buffer systems from the experiments (a, b,c, d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.