All categories

3 years ago

Determine the number of formula units in 48.0 grams of magnesium chloride (MgCl2)

Chemistry

1 answer:

vekshin13 years ago

3 0

Answer:

3.03 x 10²³ formula units

Explanation:

First we <u>convert 48.0 grams of magnesium chloride into moles</u>, using its <em>molar mass</em>:

48.0 g ÷ 95.21 g/mol = 0.504 mol MgCl₂

Then we <u>convert 0.504 moles into formula units</u>, using <em>Avogadro's number</em>:

0.504 mol * 6.023x10²³ formula units/mol = 3.03x10²³ formula units

You might be interested in

Predict the effect of an eightfold pressure increase on the equilibriunm composition of the reaction 3 Nalg) + H21g) =2 NaHlg)

aniked [119]

According to Le cha telier's principle when we increase the pressure of a equilibrium reaction the reaction shift to the side where few moles of gas present.

Your reaction (Notice - I guess the reaction you written is wrong, but still I'm solving with your given prediction)

3NaI (g) + H2 (g) = 2NaHI (g)

Where access of sodium iodide is reacting with Hydrogen gas to form NaHI molecule.

Number of moles of gas on reaction side - 3+2 = 5 moles

Number of moles of gas on product side - 2 moles

<em>Conclusion- the reaction will shift to the right of the reaction</em>

6 0

3 years ago

Read 2 more answers

The horse achieved its highest status during the___________dynasty (618-906 CE), a time of unparalleled political, artist, and c

inessss [21]

The answer is c i hopenit helps:)

3 0

3 years ago

Note.... the colliding molecules must possess certain minimum energy (threshold energy)to make the collision effective n..the ad

Oliga [24]

Answer:

<h3>I think, answer is threshold energy.</h3>

<h3>activation energy. </h3>

Explanation:

<h3>Hope it helps you....</h3>

<h2>Thank you..</h2>

4 0

3 years ago

How does a buffer resist change in ph upon addition of a strong acid?

lora16 [44]

Any buffer exists in this equilibrium

HA <=> $H^+ + A^-$
In a buffer, there is a large reservoir of both the undissociated acid (HA) and its conjugate base ( $A^-$ )

When a strong acid is added, it reacts with the large reservoir of the conjugate base ( $A^-$ ) forming a salt and water. Since this large reservoir of the conjugate base is used, the ph does not alter drastically, but instead resist the pH change.

8 0

3 years ago

A certain object has a volume of 25.0 ml and a mass of 100 g. what is the density of the object

Tpy6a [65]

Density= mass/volume

= 100/25
density = 4g/ml

8 0

3 years ago