Select the correct answer.
carbon burns in the presence of oxygen to give carbon dioxide. which chemical equation describes this reaction?
a
carbon + oxygen + carbon dioxide
b. carbon + oxygen - carbon dioxide
carbon dioxide - carbon + oxygen
d. carbon dioxide + carbon - oxygen
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Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward