5 grams of sodium bicarbonate, a white powdery solid, is placed in an empty red balloon 100 grams of acetic acid, a clear aqueous solution, is placed in the plastic bottle. The balloon is carefully
attached to the bottle so that no air can get in or out and the powder does not fall into the bottle. Once attached, the apparatus is placed on a balance and the contents are mixed. Bubbles form, the
balloon inflates, and the white powder is no longer visible. Which of the these statements would match your observations?
A) A chemical reaction has occurred and the mass will increase.
B) A chemical reaction has occurred and the mass will decrease.
A physical reaction has occurred and the mass will decrease.
D) A chemical reaction has occurred and the mass will remain the same.
Answers: 3
Biology, 21.06.2019 16:30
Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u.s. and mexico. the st. lawrence seaway provides an important trading route for the u.s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.
Answers: 2
Biology, 22.06.2019 05:30
How is transcription similar to translation in terms of base pairing?
Answers: 3
Biology, 22.06.2019 05:30
The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.
Answers: 3
5 grams of sodium bicarbonate, a white powdery solid, is placed in an empty red balloon 100 grams of...
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