Lead II carbonate decomposes to give lead II oxide and carbon dioxide: grams of lead II oxide will be produced by the decomposition of 7.50g of lead II carbonate. Please help BTW..unable to download if answer is sent via link

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What is the mass of 8 moles of sodium atoms

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?

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!