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3 years ago

Which statment about an atom of flourine is correct

Chemistry

2 answers:

slamgirl [31]3 years ago

5 0

Answer:

10 neutrons

This isotope of fluorine has 9 protons, 9 electrons and 10 neutrons.

Explanation:

grandymaker [24]3 years ago

4 0

Answer:

10 neutrons

Explanation:

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Which line of evidence has been traditionally accepted as conclusive proof of evolution? the presumed age of the Earth the fossi

Nataly_w [17]

The most generally accepted form of conclusive evidence for the theory of Evolution is the fossil record.

<h3>What is the theory of Evolution?</h3>

The theory of evolution was proposed by Charles Darwin.
It states that as time passes, organisms evolve to better adapt to their environments.
This is closely related to natural selection, which is considered a driving force of evolution.

<h3>How the fossil record supports this theory</h3>

The fossil record provides essential data to support this claim.
The data comes in the form of the comparison between fossils of two closely related organisms, separated by a matter of generations, that present changes in the genetic code that made them more apt for survival.

Therefore, we can confirm that the most generally accepted form of conclusive evidence for evolution is the presence of fossils that show the genetic correlation between two organisms and the progression of evolution between them.

To learn more about evolution visit:

brainly.com/question/2725702?referrer=searchResults

5 0

3 years ago

We have 548 grams of CaCl2. How many molecules of CaCl2 do we have? (The molar mass of CaCl2 is 110.98 g/mol)

nekit [7.7K]

Answer:

Try everything

2.97 x 10^24 molecules

3.66 x 10^28 molecules

9.1 x 10^22 molecules

4.37 x 10^22 molecules

Explanation:

3 0

3 years ago

Which of these best describes the role of plants in the carbon-oxygen cycle? A. to absorb carbon dioxide from the atmosphere and

IceJOKER [234]

Answer:

A. to absorb carbon dioxide from the atmosphere and use it to make sugar

Explanation:

Green plants with the help of their green coloring pigment called chlorophyll helps to absorb sunlight. This sunlight helps in the process Called photosynthesis in which plants manufacture food (sugar) using CO2(Carbon dioxide)and Water to give Oxygen and Sugar. The oxygen is released back into the atmosphere.

6 0

4 years ago

Read 2 more answers

A solution that dissloves completely is called a?

snow_tiger [21]

soluble substances dissolves in solvents

3 0

3 years ago

Read 2 more answers

Pentaborane-9,

frozen [14]

Given question is incomplete. The complete question is as follows.

Pentaborane ( $B_{5}H_{9}$ ) is a colorless highly reactive liquid that will burst into flames when exposed to oxygen.the reaction is:

$2B_{5}H_{9}(l) + 12O_{2} \rightarrow 5B_{2}O_{2}(s) + 9H_{2}O(l)$

Calculate the kilojoules of heat released per gram of the compound reacted with oxygen.the standard enthalpy of formation $B_{5}H_{9}(l)$ , $B_{2}O_{3}(s)$ , and $H_{2}O(l)$ are 73.2, -1271.94, and -285.83 kJ/mol, respectively.