What are the two toxic byproducts of incomplete combustion? Select one:
a. oxygen, carbon monoxide
b. carbon, oxygen
c. water, carbon dioxide
d. carbon, carbon monoxide

For part 1, describe the changes in the colors of the well, if any, as you go from well 1 to well 9—that is, as you go from the well with the least copper(ii) nitrate to the well with the most copper(ii) nitrate. which wells had the most distinct precipitate? for part 2, describe the changes in the colors of the well, if any, as you go from well 1 to well 9—that is, as you go from the well with the least iron(ii) sulfate to the well with the most iron(ii) sulfate. which wells had the most distinct precipitate? for part 3, describe the changes in the colors of the well, if any, as you go from well 1 to well 9—that is, as you go from the well with the least iron(iii) nitrate to the well with the most iron(iii) nitrate. which wells had the most distinct precipitate?

Consider these four line graphs representing speed in meters/second, where each x-axis is labelled in seconds and each y-axis is labelled in meters. which line graph indicates the greatest speed at 5 seconds?

Which of the following is a polyatomic ion? a. calcium, ca2+ b. carbide, c4- c. sulfate, so4 d. selenide, se2-