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dimulka [17.4K]
3 years ago
10

Whats 2736 +832091 +09281

Chemistry
1 answer:
astra-53 [7]3 years ago
5 0

844108

One way is to write down all the numbers and add and write down each number.

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Korolek [52]

Answer: In the chemical formula for water, the subscript for hydrogen is 2. Notice that the 2 is smaller and written slightly below the H and O. It is called a subscript because it is written ("script") "below" ("sub") the preceding letter.

Explanation:

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A roller coaster track is 3,000 meters long. It takes 100 seconds totravel once around the roller coaster. What is the average s
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What is the concentration of hydronium ion in a 0.121 M HCl solution?
kogti [31]

Answer:

C) 0.121 M

Explanation:

HCl + H₂O = H₃O⁺ + OH⁻

.121M              .121M

HCl is a strong acid . It will dissociate almost 100 % so the concentration of acid and hydronium ion formed will be equal . It is to be noted that hydronium ion is formed due to association of H⁺ and H₂O . H⁺ is formed due to ionisation of HCl .

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7 0
3 years ago
In models of molecules, spheres of different colors and
AlladinOne [14]

Answer:

D

Explanation:

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Therefore, the model showing a molecule of a substance that is made up of three elements is model D because it is made up of three distinct spheres representing atoms of each element.

- The red sphere is the atom of the first element

- The big dark sphere is the atom of the second element

- The small white sphere is the atom of the third element

3 0
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Which of the following chemical compounds contains two hydrogen atoms in every molecule?
mina [271]

Answer:

A. Water

Explanation:

H2O means that there are two hydrogen and one oxygen in every water molecule.

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