How many moles of N are in 0.223 g of N2O

1 answer:

4 0

Answer:
There are twice the molar quantity of nitrogen atoms in nitrous oxide, i.e.
1×10−2⋅mol
Moles of nitrous oxide

=

0.217
⋅
g
44.013
⋅
g
⋅
m
o
l
−
1

=

5
×
10
−
3
⋅
m
o
l
.
Given the composition of
N
2
O
, there are this
2
×
5
×
10
−
3
⋅
m
o
l
of nitrogen atoms.

You might be interested in

Meanders are characteristics of a young river. True False

Rainbow [258]

True would be the answer

7 0

3 years ago

If 45 mL of water are added to 250 mL of a 0.75 M K2SO4 solution, what will the molarity of the diluted solution be?

krok68 [10]

Answer:

$\large\boxed{\large\boxed{0.64M}}$

Explanation:

When you form a <em>diluted solution</em> from a mother (concentrated) solution, the moles of solute are determined by the mother solution.

The main equation is:

$Molarity=\dfrac{\text{moles of solute}}{\text{volume of the solution in liters}}$

Then, since the moles of solute is the same for both the mother solution and the diluted solution:

$\text{Molarity mother solution }\times\text{ volume mother solution}=\\\\=\text{Molarity diluted solution }\times\text{ volume diluted solution}$

Substitute and solve for the molarity of the diluted solution:

$250mL\times 0.75M=(45mL+250mL)\times M\\\\\\M=\dfrac{250mL\times 0.75M}{295mL}=0.64M$

8 0

3 years ago

Please answer fast!!! what does base stand for in science

pychu [463]

There are multiple meanings for a base. A base can be a substance that accepts hydrogen ions, or it could be something that is not acidic, in other words meaning its pH is between 7 and 14.

8 0

3 years ago

4. What is the molar mass of NO?

raketka [301]

Answer:

Nitrogen is a chemical element that has the symbol N and atomic number 7 and atomic mass 14.00674µ.

Explanation:

7 0

2 years ago

Argon, Ar, is a noble gas. How many miles of argon are in 200 gram sample of argon.? (Answer rounded to the ones place)

tatuchka [14]

The answer is 39.948 g/mol so rounded to the nearest ones would be 40.00 g/mol.

3 0

3 years ago