Neither of Collin’s parents has the extra finger, but his one-year-old brother (#10) does have an extra finger. Based on the pedigree, is Collin’s father (#3) or mother (#4) a carrier of the recessive allele? Explain your answer.

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?