All categories

2 years ago

What is the concentration (molarity) of a solution created by dissolving 81.1 grams of Mg3P2 to create a 2.5 solution?

Chemistry

1 answer:

Vaselesa [24]2 years ago

8 0

Answer:

The concentration of Mg3P2 solution = 0.24mol/L

Explanation:

Mass = 81.1g

Volume = 2.5L

Concentration (C) of a solution = $\frac{Moles (n)}{Volume (V)}$

but moles = $\frac{mass}{Molar mass}$ and Molar mass of Mg3P2 = 134.88g/mol

Moles = $\frac{81.1g}{134.88g/mol}$

= 0.60mol

hence the concentration can be calculated by;

C = $\frac{0.60mol}{2.5L} \\$

= 0.24mol/L or 0.24M

You might be interested in

Another name for losing electrons is... accepting donating neither

damaskus [11]

The answer is donating. This is because when an atom loses electron, it donates them to another atom.

7 0

3 years ago

How many moles of methane are in 7.31x10^25 molecules?

lana [24]

Answer:

121.37 moles.

Explanation:

Always one mole of any molecule contains Avogadro number of molecules.

So one mole of methane contains 6.023*10^23 molecules.

Now we need number of moles of methane in 7.31*10^25 molecules.

This is just cross multiplication stuff.

6.023*10^23 molecules —————- 1 mole

7.31*10^25 molecules ——————- ?

= (7.31*10^25) / (6.023*10^23)

= 121.37 moles.

8 0

3 years ago

Calculate the work associated with the compression of a gas from 121.0 l to 80.0 l at a constant pressure of 16.7 atm.

Molodets [167]

I’m am most positive the answer is c. For cat

6 0

3 years ago

Why for thousand of years people believed that stars moved across earth sky

Rzqust [24]

Because they did not have the proper technology. Hope my answer was useful.

5 0

3 years ago

Read 2 more answers

How many seconds are in a 5.5 ms

deff fn [24]

Answer:

0.0055 seconds

Explanation:

To answer this question you need to know the equivalence:

1 second (s) = 5.5 (miliseconds) (ms)

Then you use the conversion factor:

-Put the value given and the units:

$5.5ms$

- Put in the denominator the equivalence with the same units:

$5.5ms*\frac{}{1000ms}$

- Put in the numerator the unit at which you want to convert the value given:

$5.5ms*\frac{1s}{1000ms}$

- Then multiply and divide the quantities:

$5.5ms*\frac{1s}{1000ms}=0.0055 s$

Note that the same units in numerator and denominator are cancelled.

8 0

3 years ago