A bone has been found in the woods with 5.669 moles of carbon-14 left. If the bone originally had 11.003 moles of carbon-14 how old is it? A. 0 years old
B. 2952 years old
C. 50 years old
D. 5730 years old

How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town

Compare and contrast physical changes with chemical changes.