Chemistry, 16.10.2020 18:01, krystal408
15. During an investigation, students dropped a tarnished penny into a
solution of acetic acid and sodium chloride. Tiny bubbles formed around
the penny, and the penny was less tarnished after two minutes of soaking
in the acetic acid and sodium chloride solution. The student inferred that a
chemical reaction occurred. What evidence supports the student's
inference? *
The penny experienced a color change, and a gas was produced.
The penny experienced a color change, and a precipitate was formed.
The penny experienced a color change and is in a new state of matter.
The penny experienced a color change and produced light.
O
Answers: 2
Chemistry, 22.06.2019 03:00, ian2006huang
Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.
Answers: 3
Chemistry, 22.06.2019 09:00, wkalpakchi
Given the following reaction: c3h8+5o2=3co2+4h20 how many grams of co2 will be produced 7 g of c3h8 and 98 g of o2
Answers: 1
15. During an investigation, students dropped a tarnished penny into a
solution of acetic acid and...
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