The closeness of a measurement to its true value is a measure of its Accuracy.
3Mg + N₂ = Mg₃N₂
Mg₃N₂
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In a endothermic reaction energy from an outside source is continuously being added.
Answer:
A compound is a pure substance because its molecule cannot be broken down into simpler particles by physical means. A compound is not a pure substance because it is not an element, and only elements are pure substances.
