Index Fossils Fossils that help with dating are called index fossils.
Index fossils formed from that
• were alive for only a period of geologic time.
• are extinct.
• had hard parts such as shells, bones, and teeth.
• lived across a wide area.

The answer choice is short, relative, geographic, organisms

Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

Which piece of equipment would me most useful for measuring the volume of some water? a. pan balance b. graduated cylinder c. tweezers d. flask quick