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3 years ago

Why is it o2 and not o?and what does the 2 stand for?

Chemistry

2 answers:

lutik1710 [3]3 years ago

7 0

Answer:

Atoms

Explanation:

O2 is Written with a two as it is two oxygen atoms. Just o means one oxygen atom

Tanzania [10]3 years ago

4 0

Answer: Oxygen usually is in the form of diatomic molecules, this means each molecule contains two oxygen atoms.

Explanation: molecules form because of a lone oxygen atom is two electrons short of a full outer shell of eight. In order to fill the outer shell, one oxygen electron will share electrons with another one. Each oxygen atom 'gains' two electrons from the other. A total four electrons are shared between them, two from each atom, thus a double covalent bond is created.

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2A (g) + Y (g) <-- --> 3C (g) + D (g)

insens350 [35]

Answer:

A. K = 59.5

Explanation:

Hello there!

In this case, since this reaction seems to start moving leftwards due to the fact that neither A nor Y are present at equilibrium, we should rewrite the equation:

3C (g) + D (g) <-- --> 2A (g) + Y (g)

Thus, the equilibrium expression is:

$K^{left}=\frac{[A]^2[Y]}{[C]^3[D]}$

Next, according to an ICE table for this reaction, we find that:

$[A]=2x$

$[Y]=x$

$[C]=0.651M-3x$

$[D]=0.754M-x$

Whereas x is calculated by knowing that the [C] at equilibrium is 0.456M; thus:

$x=\frac{0.651-0.456}{3} =0.065M$

Next, we compute the rest of the concentrations:

$[A]=2(0.065M)=0.13M$

$[Y]=0.065M$

$[D]=0.754M-0.065M=0.689M$

Thus, the equilibrium constant for the leftwards reaction is:

$K^{left}=\frac{(0.13M)^2(0.065M)}{(0.456M)^3(0.689M)}=0.0168$

Nonetheless, we need the equilibrium reaction for the rightwards reaction; thus, we take the inverse to get:

$K^{right}=\frac{1}{0.0168}=59.5$

Therefore, the answer would be A. K = 59.5.

Regards!

6 0

3 years ago

To form a stable ion will magnesium gain or lose electrons how many electrons

pashok25 [27]

The electronic structure of Magnesium is 2,8,2
so in order to form a stable ions, it will lose 2 electrons.
Now, the proton number of Mg is 12, electron number is 10.
It will show positive charge.
Conclusion: Mg will lose 2 electrons to form Mg2+.

4 0

3 years ago

When the problem within the story gets more intense and builds, this is the... Select one: climax. falling action. rising action

timama [110]

Answer:

rising action.

Explanation:

Rising action is a term used in literature to describe the corresponding portion of the story, that occurs immediately before the climax, by increasing its atmosphere or builds-up whereby the tension level surges.

Climax, on the other hand, is a form of the highest point major turning point in a story.

While falling action is the point where there is a quick decrease in tension level, and follows immediately after the climax

Resolution is also known as the final part of the story, it follows immediately after falling action.

Hence, when the problem within the story gets more intense and builds, this is the "Rising Action."

4 0

3 years ago

How would you calculate the number of nanometers in 8.1 cm

devlian [24]

A: 8.1 • 10^7 nanometers

Because 1cm = 1 • 10^7 nm
So 8.1cm • (1 • 10^7 nm) = 8.1.10^7

4 0

4 years ago

Write the complete balanced equation for the following reaction:

Assoli18 [71]

Explanation:

An equation that consists of same number of atoms on both reactant and product side is known as a balanced chemical equation.

For example, $C_{7}H_{6}O + O_{2} \rightarrow CO_{2} + H_{2}O$

Number of atoms on reactant side are as follows.

C = 7

H = 6

O = 3

Number of atoms on product side are as follows.

C = 1

H = 2

O = 3

Therefore, to balance this chemical equation we multiply $O_{2}$ by 8 on reactant side. Whereas we multiply $CO_{2}$ by 7 and $H_{2}O$ by 3 on product side.

Therefore, the balanced chemical equation will be as follows.

$C_{7}H_{6}O + 8O_{2} \rightarrow 7CO_{2} + 3H_{2}O$

6 0

4 years ago

Why is it o2 and not o?and what does the 2 stand for?​

Why is it o2 and not o?and what does the 2 stand for?