In the reaction _ S +302 → 2503, what coefficient should be placed in front of the S to balance the reaction?
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The identities of substances are the same before and after which type of change

Determine the ph of 0.10 m nh3 solution. nh3 is a weak base with a kb equal to 1.8 x 10-5 round answer to nearest whole number.

Need , hurry pls create a superhero out of the element iron, what are its powers and his sidekick ( an element that works well with iron). how was the superhero made and who discovered him