Question

if a planet revolves around the sun in an orbit who's orbit rarius is 4 tines the orbit radius of earth,how much time will the planet take to revolve around the sun
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Answer 1

Explanation:

With metals

The reactions are just the same as with acids like hydrochloric acid, except they tend to be rather slower. For example, dilute ethanoic acid reacts with magnesium. The magnesium reacts to produce a colourless solution of magnesium ethanoate, and hydrogen is given off