Sulfur reacts with oxygen to form sulfur dioxide (SO2(g), Delta. Hf = –296.8 kJ/mol) according to the equation below.

Upper S (s) plus upper O subscript 2 (g) right arrow upper S upper o subscript 2 (g).

What is the enthalpy change for the reaction?
Use Delta H r x n equals the sum of delta H f of all the products minus the sum of delta H f of all the reactants..

–593.6 kJ
–296.8 kJ
296.8 kJ
593.6 kJ

(1.6 × 10-19)(5.0 × 106) = c × 10d identify the missing numbers below to show the result of multiplying the numbers.

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize