Identify the decomposition reaction.

2NH 3 + H 2SO 4 ⟶ (NH 4) 2SO 4

3Pb + 2H 3PO 4 ⟶ 3H 2 + Pb 3(PO 4) 2

2 NO 2 ⟶ 2 O 2 + N 2

2NaBr + Ca(OH) 2 ⟶ CaBr 2 + 2NaOH

Which of the following elements is a representative element? a. chromium (cr) b. aluminum (al) c. mercury (hg) d. silver (ag)

What is the molecular formula for a compound that is 46.16% carbon, 5.16% hydrogen, and 48.68% fluorine? the molar mass of the compound is 156.12 g/mol

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?