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anyanavicka [17]
3 years ago
9

PLEASE HELPP Will mark brainliest

Chemistry
1 answer:
zheka24 [161]3 years ago
7 0

Answer:

B

Explanation:

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Which of the following represents a compound made of five molecules? CO 5 C 2O 5 C 5O 5CO 2
poizon [28]

Answer:

Consider this balanced chemical equation:

2 H2 + O2 → 2 H2O

We interpret this as “two molecules of hydrogen react with one molecule of oxygen to make two molecules of water.” The chemical equation is balanced as long as the coefficients are in the ratio 2:1:2. For instance, this chemical equation is also balanced:

100 H2 + 50 O2 → 100 H2O

This equation is not conventional—because convention says that we use the lowest ratio of coefficients—but it is balanced. So is this chemical equation:

5,000 H2 + 2,500 O2 → 5,000 H2O

Again, this is not conventional, but it is still balanced. Suppose we use a much larger number:

12.044 × 1023 H2 + 6.022 × 1023 O2 → 12.044 × 1023 H2O

These coefficients are also in the ratio of 2:1:2. But these numbers are related to the number of things in a mole: the first and last numbers are two times Avogadro’s number, while the second number is Avogadro’s number. That means that the first and last numbers represent 2 mol, while the middle number is just 1 mol. Well, why not just use the number of moles in balancing the chemical equation?

2 H2 + O2 → 2 H2O

is the same balanced chemical equation we started with! What this means is that chemical equations are not just balanced in terms of molecules; they are also balanced in terms of moles. We can just as easily read this chemical equation as “two moles of hydrogen react with one mole of oxygen to make two moles of water.” All balanced chemical reactions are balanced in terms of moles.

Explanation:

6 0
3 years ago
According to the arrhenius concept, the
makvit [3.9K]

According to the Arrhenius concept, the strength of an acid depends upon the H⁺ ions furnished by the acid.

<h3>What is the Arrhenius theory of acids?</h3>

According to the Arrhenius theory, acids are those substance which will give H⁺ ion in an aqueous solution.

And acidity of any substance will be calculated by using the pH value which can be calculated as pH = -log[H⁺].

  • Hydrolysis will not able to define the strength of the acid.
  • Concentration of the acid is also not valid to define the strength of the acid because all acids will not have H⁺ ion.
  • Number of moles of the base which are used for neutralization is also not used to define the strength of Arrhenius acid.

Hence H⁺ ions furnished by the acid is used to define the strength of Arrhenius acid.

To know more about Arrhenius acid, visit the below link:

brainly.com/question/1163742

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8 0
2 years ago
Help me please I really need this tomorrow
scoundrel [369]

<u>9.</u><u>D</u>

<u>10.</u><u>A</u>

<u>11.</u><u>C</u>

<u>12.</u><u>B</u>

<u>13.</u><u>D</u>

<u>14.</u><u>C</u>

<u>15.</u><u>A</u>

<u>16.</u><u>A</u>

<u>18.</u><u>C</u>

6 0
3 years ago
Read 2 more answers
Under constant pressure a sample of hydrogen gas initially at 88°C and 9.6 L is cooled until its final volume is 3.4 L. What is
Scilla [17]

The final temperature = -145.24K or 127°C.

According to the data given,

T1= 88°C = 361.15K

V1= 9.6 L

V2= 3.4 L

T2= ?

We know that, according to Charles's law,

T1/V1=T2/V2

T2= T1*V2/V1

T2= 127°C or -145.24K

The final temperature = -145.24K or 127°C

<h3>What does Charles law state?</h3>

According to Charles' law, when the pressure is held constant, the volume of a given amount of gas is precisely proportional to its temperature on the kelvin scale.

<h3>What connection exists between volume and temperature?</h3>
  • In layman's words, the volume of a fixed mass of gas is exactly proportional to temperature at constant pressure.
  • When a constant mass of gas is cooled, its volume decreases, and when the temperature is elevated, its volume grows.

<h3>What are the applications of Charles law?</h3>
  • A hot air balloon drifting through the air is an illustration of Charles Law in action.
  • The air within the balloon is heated by a torch, which causes the air molecules to move more quickly and disperse.
  • This causes the air inside the balloon to be less dense than the air outside, which causes the balloon to float.

To learn more about Charles law visit:

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7 0
1 year ago
After stirring the sugar you added to some hot tea, the sugar disappears but the tea tastes sweet.
kirza4 [7]
Chemical Change because if it would be a physical change the physic of the tea would look different but it doesn’t
7 0
3 years ago
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