Use properties to evaluate the expression. (19 + 28) + 21 A. 48 B. 58 C. 68 D. 89
(19 + 28) + 21; 47 + 21 = 68
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Updated 4/21/2014 11:38:42 AM
Edited by andrewpallarca [4/21/2014 11:38:42 AM]
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Which statement is a correct expression of the Law of Conservation of Mass? A. The total mass is unpredictable in a chemical reaction. B. The total mass remains the same during a chemical reaction. C. The total mass decreases during a chemical reaction. D. The total mass increases in a chemical reaction.
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Updated 4/14/2014 12:13:56 AM
The total mass remains the same during a chemical reaction. This is a correct expression of the Law of Conservation of Mass
How many inches are in yards? A. 19.5 inches B. 78 inches C. 234 inches D. 312 inches
Weegy: 1 yard= 36 inches. Depending on the number of yards, just multiply it to 36 to get the inches equivalent. You may also provide the exact yard so I can convert it for you. (More)
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Updated 4/17/2014 11:11:17 PM
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