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3 years ago

A liquid that occupies a volume of 9.0 L has a mass of 7.2 kg. What is the density of the liquid in kg/L

Chemistry

1 answer:

babunello [35]3 years ago

3 0

Answer:

<h2>Density = 0.8 kg/L</h2>

Explanation:

The density of a substance can be found by using the formula

<h3> $Density = \frac{mass}{volume}$ </h3>

From the question

mass = 7.2 kg

volume = 9.0 L

Substitute the values into the above formula and solve for the density

That's

<h3> $Density = \frac{7.2}{9}$ </h3>

We have the final answer as

<h3>Density = 0.8 kg/L</h3>

Hope this helps you

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The fact that water boils at 100° C is an example of a(n)

Vikki [24]

The answer will be physical change

8 0

3 years ago

wo reactions and their equilibrium constants are given. A + 2 B − ⇀ ↽ − 2 C K 1 = 2.57 2 C − ⇀ ↽ − D K 2 = 0.226 A+2B↽−−⇀2CK1=2.

Papessa [141]

<u>Answer:</u> The value of equilibrium constant for the net reaction is 11.37

<u>Explanation:</u>

The given chemical equations follows:

<u>Equation 1:</u> $A+2B\xrightarrow[]{K_1} 2C$

<u>Equation 2:</u> $2C\xrightarrow[]{K_2} D$

The net equation follows:

$D\xrightarrow[]{K} A+2B$

As, the net reaction is the result of the addition of first equation and the reverse of second equation. So, the equilibrium constant for the net reaction will be the multiplication of first equilibrium constant and the inverse of second equilibrium constant.

The value of equilibrium constant for net reaction is:

$K=K_1\times \frac{1}{K_2}$

We are given:

$K_1=2.57$

$K_2=0.226$

Putting values in above equation, we get:

$K=2.57\times \frac{1}{0.226}=11.37$

Hence, the value of equilibrium constant for the net reaction is 11.37

6 0

3 years ago

Nitrosyl fluoride has the chemical formula NOF. Nitrogen has five valence electrons, oxygen has six, and fluorine has seven. Com

alexira [117]

Answer:

Watch the attached image, please.

Explanation:

To complete the Lewis structure for this covalent compound, you have to draw all the atoms with their valence electrons.

The drew has the nitrogen in the center and the fluoride and oxygen in the sides.

Each one of these atoms has to complete the octet rule, which is the ruler who says that all the atoms want to reach to have eight electrons to feel "stable".

For that reason, you have to arrange the atoms to comply with this rule.