How many moles of n₂ are essential for generating 0.08 moles of li₃n in the given reaction?
6li + n₂ 2li₃n

0.013 moles

0.04 moles

0.08 moles

0.16 moles

0.48 moles

Compare and contrast physical changes with chemical changes.

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?

Read "who built the pyramids? ”. leave this link open while you answer the questions throughout the assignment. give at least two reasons why some people claim the pyramids of giza were constructed by aliens.