Calculate AH for the reaction of sulfur dioxide with oxygen.
250 2(g) + O2(g) - 250 3 (9)
(AH-so (g) = -296.8 kJ/mol; AH ° so 3 (g) = -395.7 kJ/mol)
1.385 x 103 kJ
197.8 k]
-98.9 kJ
-197.8 kJ

Yes, endothermic means it turns cold. and some chemical changes include change of tempature.

B. a graduated substance

The correct answer is "hydrogen".

Ithink that the use of creativity in the sciences entails that one produce something out of nothing or from another thing. with this, i think that the he wrote down his results as four parts of the atomic theory is the manifestation of the  creativity of john dalton.