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Sonja [21]
3 years ago
15

Help please I'll mark you as a brainliest promise.​

Chemistry
1 answer:
antiseptic1488 [7]3 years ago
5 0

Answer:

Law of the Sea Treaty

LOST Local Option Sales Tax (special purpose tax)

LOST Linux One Stanza Tips

LOST Liberty Owners Special Team

LOST Looking Over Strange Terrain :-)

LOST Line Of Sight Tasking

Explanation:is this what you meant?

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What is the empirical formula for a compound that is 83.7% carbon and 16.3% hydrogen?
zubka84 [21]
Hello!

We use the amount in grams (mass ratio) based on the composition of the elements, see: (in 100 g solution)

C: 83.7% = 83,7 g 
H: 16.3% = 16.3 g 

Let us use the above mentioned data (in g) and values will be ​​converted to amount of substance (number of moles) by dividing by molecular mass (g / mol) each of the values, lets see:

C:  \dfrac{83.7\:\diagup\!\!\!\!\!g}{12\:\diagup\!\!\!\!\!g/mol} \approx 6.975\:mol

H: \dfrac{16.3\:\diagup\!\!\!\!\!g}{1\:\diagup\!\!\!\!\!g/mol} = 16.3\:mol

We note that the values ​​found above are not integers, so let's divide these values ​​by the smallest of them, so that the proportion is not changed, let's see:

C:  \dfrac{6.975}{6.975} = 1

H:  \dfrac{16.3}{6.975} \approx 2.3

Note: So the ratio in the smallest whole numbers of carbon to hydrogen is 3:7, t<span>hus, the minimum or empirical formula found for the compound will be:
</span>
\boxed{\boxed{C_3H_7}}\end{array}}\qquad\checkmark

I hope this helps. =)
8 0
3 years ago
Identify whether each species functions as a Brønsted-Lowry acid or a Brønsted-Lowry base in this net ionic equation. HF (aq) +
VMariaS [17]

Explanation:

A Bronsted-Lowry base is a substance that accepts a proton in the form of a hydrogen (H) atom.

On the other hand;

Bronsted-Lowry acid is the substance that donates the proton.

HF (aq) + SO32- ⇌ F- + HSO3-

In the forward reaction;

Bronsted-Lowry acid : HF

Bronsted-Lowry base: SO32-

In the backward reaction;

Bronsted-Lowry acid : HSO3-

Bronsted-Lowry base: F-

The conjugate base of HF is F-

The conjugate acid of SO32- is HSO3-

8 0
3 years ago
Hi! Which of the following decreases kinetic energy of solvent molecules? ( I need this handed in quickly!)
Black_prince [1.1K]

Answer:

c

Explanation:

4 0
3 years ago
Tiny sacs in the lungs where gas exchange takes place are called ____?
SSSSS [86.1K]

Answer:

Alveoli

Explanation:

I hope this helps you.

8 0
3 years ago
Read 2 more answers
What is neutron number for calcium ​
notka56 [123]

Answer:

20 neutrons

Explanation:

(not really any just look at a periodic table)

5 0
3 years ago
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