Why is cobalt (Co) placed before nickel (Ni) on the periodic table of the elements even though it
has a higher average atomic mass than nickel?
A Nickel has one more proton.

B Cobalt was discovered first.

C Nickel has fewer electrons.

D Cobalt has a lower density.

state the principle of separating two immiscible liquids by separating funnel. describe an activity with diagram to separate a mixture of water and kerosene oil. answer: immiscible layers separate out in layers depending on their densities in separating funne

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

the right answer is c i just did the question.