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4 years ago

How many oxygen atoms are in a representative particle of each substance?

Chemistry

2 answers:

jok3333 [9.3K]4 years ago

8 0

The oxigen molecule has symbol $O_2$ .
The number 2 means that is has 2 atoms.

Mumz [18]4 years ago

4 0

NH4NO3 b) C8H8O4 c) O3 d) C3H5(NO3)3

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R indicates round seeds that are dominant over the wrinkled variety, represented by r. For each numbered individual in the pedig

Dmitry [639]

Answer:

it is incomplete, is this te entire tree

Explanation:

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3 years ago

What is the nature of the Ca-Cl bond in a molecule of calcium chloride (CaCl2) if the electronegativity value of calcium is 1.0

nevsk [136]

Ca-Cl is an ionic bond. We know this because the difference between their electronegativities is 2.16.The electronegativity tells us which atom will attract the electron more than the other. Hence, chlorine attracts the electron a lot more than the calcium.A difference of more than 1.6 (or 1.7 depending on the source) implies that the electrons are so unevenly shared, that the bond is ionic, rather than polar covalent.

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3 years ago

Nitric acid (HNO3) is used in the production of fertilizer, dyes, drugs, and explosives. Calculate the pH of a HNO3 solution hav

Alona [7]

Answer:

pH of HNO₃ having an hydrogen ion concentration of 0.71M is 0.149

Explanation:

HNO₃ (aqueous) ⇄ H⁺ + NO3⁻

The pH is defined as the negative log of the hydrogen ion concentration

pH = - log [H⁺]

From the question, the hydrogen ion concentration is given as 0.71M, therefore

pH = -log [0.71]

= 0.149

3 0

3 years ago

Read 2 more answers

The variables _______ and ________ affect the gravitational force between objects.

anastassius [24]

I think the answer is A

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3 years ago

Read 2 more answers

Ice cream is made by freezing a liquid mixture that, as a first approximation, can be considered a solution of sucrose (C12H22O1

AlladinOne [14]

Answer:

Hi.

The temperature is approximately zero degrees (0°C)

Explanation:

It is important to keep in mind that in the production of ice cream the decrease in the freezing point of the water present in the mixture is called the antifreeze power of the mixture. In ice cream, the freezing point decrease will be caused by each substance that is dissolved in the mixture: lactose, salts, sugars and any other substance. Each of these substances will contribute to the decrease in the freezing point of the mixture. The phase diagram attached in the file shows the sugar solutions in water. When a solution cools (point A), there comes a time when the freezing curve is reached (point B). At that moment ice begins to appear. As shown in the diagram this temperature is approximately zero degrees (0 ° C).

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3 years ago