If a 14.3 cm3 sample of lake water is found to have 177.5 ng as, what is the concentration of arsenic in the sample in parts per billion (ppb), assuming that the density of the lake water is 1.00 g/cm3?

answer:

15.4ppb

explanation:

(167.9 × 10^-9 g) / (10.9 g) = 1.54 × 10^-8 = 15.4 × 10^-9 = 15.4 ppb

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

the child is heterozygous