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law of definite composition

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noun
Chemistry. the statement that in a pure compound the elements are always combined in fixed proportions by weight.
Logic. the law that either a proposition or its denial must be true.
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ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
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Question 1 of 8
Which of the following words describes “sky blue”?
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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