All categories

2 years ago

How many moles of magnesium are in 3. 01 x 10^22 atoms of magnesium.

Chemistry

1 answer:

marshall27 [118]2 years ago

5 0

Answer:

Explanation:

1 mol of anything is 6.02 * 10^23 atoms (in this case)

x mol of 3.01 * 10^22

Set up the proportion

1/x = 6.02*10^23 / 3.01 * 10^22 Cross multiply

x*6.02 * 10^23 = 1 * 3.01 * 10^22 Divide by 6.02*10^23

x = 3.01 * 10^22 / 6.02*10^23

x = 1/(2 * 10)

x = 1/20 mol

x = 0.05 mol

You might be interested in

List and describe the three rock types in the rock cycle including two or more processes involved in the formation of each type

Ludmilka [50]

Answer: The three main rock types are igneous, metamorphic and sedimentary.

The three processes that change one rock to another are crystallization, metamorphism, and erosion and sedimentation.

Any rock can transform into any other rock by passing through one or more of these processes. This creates the rock cycle.

Explanation:

5 0

3 years ago

Which is an intermediate in this reaction mechanism:

Shkiper50 [21]

ClOnswer:

Explanation:

8 0

3 years ago

Antonym for tempestuous

andrew11 [14]

Wild or passionate ..........

6 0

3 years ago

The densities of various substances are listed in the chart. All of these substances have the same

Butoxors [25]

Answer:

The object with the greatest density

Explanation:

The object that will have the greatest mass from the given choices is the one with greatest density.

Density is the mass per unit volume of a substance;

Density = $\frac{mass}{volume}$

We can see that density is directly proportional to the mass and inversely proportional to the volume.

The more the mass and the lesser the volume, the higher the density.

So, since the volume is the same, and mass is directly proportional to density, the object having the highest density will have the greatest mass.

6 0

2 years ago

Which of the following describes the relationship between acid strength and ka value for weak acids?

Leona [35]

I think the correct answer would be when ka increases, the acid strength increases. Ka is the product of hydronium ions and the [A-] ions concentration over the acid concentration. Therefore, increasing the the Ka, the numerator in the definition would increase as well which correspondingly increase the strength of the acid.

8 0

3 years ago