1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ss7ja [257]
3 years ago
6

How many molecules of nitrogen dioxide are in 1.28 g of nitrogen dioxide?

Chemistry
2 answers:
Kryger [21]3 years ago
5 0
In order to determine the number of molecules of nitrogen dioxide that are in 1.28 g of nitrogen dioxide, we first need to know these values:

Molar mass of nitrogen dioxide = 46.0055 g/mol
Avogadro's number = 6.022 x 10^23 molecules/mol

Then, we divide 1.28 g by the molar mass and multiply the resulting value to Avogadro's number:

1.28 g/ 46.0055 g/mol x 6.022 x 10^23 molecules/mol = 1.6755 x 10^22 molecules of nitrogen dioxide
puteri [66]3 years ago
3 0

Hello! 

How many molecules of nitrogen dioxide are in 1.28 g of nitrogen dioxide?

Let's first find the molecular mass of nitrogen dioxide, knowing that by Avogadro's Law for each mole of a substance we have 6.02 * 10²³ molecules.

N = 1*14 = 14 amu

O = 2*16 = 32 amu

---------------------------

molecular mass of nitrogen dioxide = 14 + 32 = 46 g/mol

How many molecules of nitrogen dioxide are in 1.28 g of nitrogen dioxide NO2?

46 g ---------------- 6.02*10²³ molecules

1.28 g -------------  y molecules

46*y = 1.28*6.02*10^{23}

46y = 7.7056*10^{23}

y = \dfrac{7.7056}{46}*10^{23}

y = 0.167513043*10^{23}

\boxed{\boxed{y \approx 1.675*10^{22}\:molecules\:of\:nitrogen\:dioxide}}\end{array}}\qquad\checkmark

________________________

I Hope this helps, greetings ... Dexteright02! =)

You might be interested in
Help me out on this please !!
Tanya [424]

Answer:

hiiiiiiiiiiiiiiiiiiiiiiiiii

6 0
2 years ago
Two scientists were competing to earn some grant money to fund their research, because
Citrus2011 [14]
Societal and economical
3 0
3 years ago
Read 2 more answers
Which of these groups CANNOT harvest energy from the sun?
Tomtit [17]
Viruses..................
8 0
3 years ago
Read 2 more answers
How many milligrams are in 2.5 kg?
ludmilkaskok [199]

Answer:

There are 2500000 milligrams in 2.5 kg

7 0
3 years ago
Are ions of alkali metals larger or smaller than ions of alkaline earth metals from the same period
PtichkaEL [24]
Because size of an atom INCREASES from top to bottom and DECREASES from left to right on the periodic table. If to elements are in the same period they can't increase in size based on the up or down trend. Instead, notice that Alkali Metals are LEFT of Alkaline Earth Metals. Therefore, the Alkali Metal will be larger than the Alkaline Earth Metals.
7 0
3 years ago
Other questions:
  • How many atoms are there in 90.2 grams of selenium?
    12·1 answer
  • In an experiment, what is the purpose of the control group?
    7·2 answers
  • would you expect the N-O bond in HNO2 to be longer, shorter, or the same length as the N-O bonds in NO2^-
    7·1 answer
  • What is a group in the periodic table of elements?
    5·2 answers
  • PLease help me with this question
    7·2 answers
  • A certain atom has a nucleus containing six protons and eight neutrons and has six electrons orbiting the nucleus
    8·1 answer
  • Eliza mixes batter for a cake and puts it in the oven. What kind of change
    11·1 answer
  • Which Lewis structure correctly represents an ionic bond between group 2 and group 7?
    12·1 answer
  • What happens when a given mass of a liquid starts to expand?
    8·1 answer
  • Help me plz #10 would appreciate it
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!