Which of the following is NOT matter? A desk A desk An orange An orange A pencil A pencil Sunlight Sunlight A piece of paper A piece of paper A cookie

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2