9) How many molecules of nitrogen monoxide are in a 22.5 gram sample? A) 5.86 x...
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9) How many molecules of nitrogen monoxide are in a 22.5 gram sample? A) 5.86 x 10²3 B) 7.33 x 1023 C) 4.51 x 1023 D) 4.06 x 1023 N₂ Os 2259 ( 10) When water is heated, bubbles form in the water. Is this evidence of a chemical reaction? Why? A) No, boiling water is a physical change. BYes, the formation of a gas is evidence of a chemical reaction. C) No, the formation of gas bubbles is a secondary chemical reaction which is ignored. D) Yes, the formation of a gas is proof a new compound has been made. 9) How many molecules of nitrogen monoxide are in a 22.5 gram sample? A) 5.86 x 10²3 B) 7.33 x 1023 C) 4.51 x 1023 D) 4.06 x 1023 N₂ Os 2259 ( 10) When water is heated, bubbles form in the water. Is this evidence of a chemical reaction? Why? A) No, boiling water is a physical change. BYes, the formation of a gas is evidence of a chemical reaction. C) No, the formation of gas bubbles is a secondary chemical reaction which is ignored. D) Yes, the formation of a gas is proof a new compound has been made.
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Related Book For
Chemistry The Central Science
ISBN: 978-0321696724
12th edition
Authors: Theodore Brown, Eugene LeMay, Bruce Bursten, Catherine Murphy, Patrick Woodward
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