Given below is a list of chemical reactions. 1. burning octane fuel 2. forming rust in an iron pipe 3. baking a cake 4. cement hardening which sequence ranks the chemical reactions in order from fastest to slowest? 4, 3, 2, 1 1, 3, 2, 4 3, 2, 1, 4 1, 3, 4, 2

Find the empirical formula of each of the following compounds. given mass or for each element in a sample of the compound 3,611 g ca; 6.389 g c1

Which characteristics can be used to differentiate star systems? check all that apply.

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added