How much heat is needed for the decomposition of 168.4g of sodium nitride and sodium?

50 pts plz what is the physical state of matter of baking soda.

Identify two types of chemical bonding in the source of dietary potassium

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?