Which statement is not true about oxygen-17 and oxygen-18? they have the same number of protons. their atoms have an identical mass. they are isotopes of oxygen. they do not have the same mass number

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

For each of the following types of reactions, write a general reaction formula in the symbolic form—for example, a + b → ab. single-displacement double-displacement synthesis decomposition

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