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suter [353]
2 years ago
6

If the image shows a model of ocean fossils but the actual fossils were found in the desert, what might one assume about the his

tory of the area where they were found? Its for my sis quiz.
A.That at one time the environment was much colder in Antarctica.


B.That the land of this desert is relatively young geologically speaking.


C.That at one time, the environment of that desert was under an ocean.


D.That at one time in the distant past someone threw away some marine fossils in the desert.
Chemistry
1 answer:
Talja [164]2 years ago
3 0

Answer:

C

Explanation:

The cold doesn't mean water (A), the age of the desert doesn't mean much in this context (B), that doesn't make any sense (D), but the desert being an ocean in the past does explain where the fossil came from because the organism would have been in the area before death.

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O2.

Because it is only made up of one type of element it is an element. Howevern there is more than one oxygen atom because oxygen cannot exist as a single atom, therefore making it a molecule as well.
8 0
3 years ago
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Which hydrocarbon belongs to the Alkyne homologous series?
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Answer:

(A) CHCH

Explanation:

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Alkynes are formed when triple bonds are formed between carbons, it means that due to the triple bonds, three bonds are already exhausted and carbon atoms need four bonds to attain the octet, for that reason, an extra bond is allowed. Now, such extra bond, when talking about hydrocarbons is filled with hydrogens, for that reason the alkyne should be (A) CHCH as it also accomplishes the following formula which is not accomplished by the rest of the options:

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3 years ago
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What are the molality and mole fraction of solute in a 22.2 percent by mass aqueous solution of formic acid (HCOOH)?
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(0.48234 mol HCOOH) / (0.0778 kg) = 6.1997 mol/kg = 6.20 m HCOOH 
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