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Igoryamba
2 years ago
11

Fossils provide evidence that

Chemistry
1 answer:
katrin2010 [14]2 years ago
7 0
Of these options, I'd say the third choice or "Many species of organisms that lived long ago are now extinct". I hope this helps :)
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A What does the data tell us? Using the storm data and the computer model, check all statements that are true.
ioda
I think the answer is a. and d.

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3 years ago
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What is the feeling you get when you're watching a movie and a scene gives you chills but also warms your heart?
kirza4 [7]
A good feeling, but i'm not sure what it's called
8 0
3 years ago
Find the empirical formula of the following compounds:
Aneli [31]

The empirical formula of the following compounds 0.903 g of phosphorus combined with 6.99 g of bromine.

<h3>What is empirical formula?</h3>

The simplest whole number ratio of atoms in a compound is the empirical formula of a chemical compound in chemistry. Sulfur monoxide's empirical formula, SO, and disulfur dioxide's empirical formula, S2O2, are two straightforward examples of this idea. As a result, both the sulfur and oxygen compounds sulfur monoxide and disulfur dioxide have the same empirical formula.

<h3>How to find the empirical formula?</h3>

Convert the given masses of phosphorus and bromine into moles by multiplying the reciprocal of their molar masses. The molar masses of phosphorus and bromine are 30.97 and 79.90 g/mol, respectively.

Moles phosphorus = 0.903 g phosphorus \frac{mol phosphorus}{ 30.97 g phosphorus}= 0.0293 mol

Moles bromine 6.99 g bromine\frac{mol bromine}{79.90 g bromine}=0.0875 mol

The preliminary formula for compound is P0.0293Bro.0875. Divide all the subscripts by the subscript with the smallest value which is 0.0293. The empirical formula is P1.00Br2.99 ≈ P₁Br3 or PBr3

To learn more about empirical formula visit:

brainly.com/question/14044066

#SPJ4

8 0
1 year ago
Which has the larger radius, F or F− ?
vlabodo [156]

Answer is B-  F has a smaller radius than F− because an additional electron causes greater repulsion in F− is the correct choice and the nuclear charge the radius of the anion increases.

Explanation: I hoped that helped!

6 0
3 years ago
In an ion, the number of electrons is _____ to the number of protons​
zaharov [31]

Answer:

more/less depending on if it lost or gained electrons during the ionic bond process

3 0
1 year ago
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