Chemistry, 13.04.2021 01:50, oneicyahdaley10
Which statement is true about fossils?
a. Only the remains of animals, and not plant, can be made into a fossil.
b. To officially be a fossil, the remains of an entire organism must be found.
c. The remains of an organism that lived 500 years ago is called a fossil.
d. A fossil is any trace of prehistoric life.
Answers: 3
Chemistry, 21.06.2019 17:10, PSBSolarYT
For which one of the following reactions is the value of δh° rxn equal to δh° f for the product? a. 2 h2 (g) + o2 (g) → 2 h2o (l) b. n2 (g) + o2 (g) → 2 no (g) c. 2 h2 (g) + o2 (g) → 2 h2o (g) d. h2o (l) + 1/2 o2 (g) → h2o2 (l) e. none of the above
Answers: 1
Chemistry, 22.06.2019 05:30, alexusnicole817
Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change
Answers: 2
Which statement is true about fossils?
a. Only the remains of animals, and not plant, can be made i...
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