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
Nostrana [21]
3 years ago
10

In nature, oxygen has three common isotopes. The atomic masses and relative abundances of these isotopes are given in the table

below.
Isotope Atomic Mass (amu) Relative Abundance
O-16          15.995                          99.759%
O-17          16.995                             0.037%
O-18          17.999                               0.204%
Calculate the average atomic mass of oxygen. Show all of your calculations below.
Chemistry
1 answer:
Reil [10]3 years ago
7 0
<span>15.995* 0.99759 + 16.995*0.00037 + 17.999*0.00204 = 15.999</span>
You might be interested in
although geometry is of Pharmacy and H2O Aadi supported tetrahedral bond angle in water is less than that of ammonia discuss ​
myrzilka [38]

Answer:

Since the repulsions on the bond pairs in H2O molecule are greater than that in NH3, the bond angle in water is less than that of ammonia...

3 0
3 years ago
The molarity of a solution containing 7.1 g of sodium sulfate in 100 mL of an aqueous solution is
Sergio [31]

Answer:

0.5 M

Explanation:

First we have to start with the <u>molarity equation</u>:

M=\frac{mol}{L}

We need to know the<u> amount of moles and the litters</u>.

If we have 100 mL we can convert this value to “L”, so:

100~mL\frac{1~L}{1000~mL}

0.1~ L

Now we can continue with the moles, for this we have to know the <u>formula of sodium sulfate</u> Na_2SO_4, with this formula we can <u>calculate the molar mass</u> if we know the atomic mass of each atom on the formula (Na: 23 g/mol, S: 32 g/mol, O: 16 g/mol). We have to multiply each atomic mass by the amount of atoms in the formula, so:

molar~ mass~=~ (23*2)+(32*1)+(16*4)= ~ 142~ g/mol

In other words:

1~mol~ Na_2SO_4=~142~g~ of~Na_2SO_4

Now we can <u>calculate the moles</u>:

7.1~g~ of~Na_2SO_4\frac{1~mol~ Na_2SO_4}{142~g~ of~Na_2SO_4}

0.05~mol~ Na_2SO_4

Finally, we can <u>calculate the molarity:</u>

M=\frac{0.05~mol~ Na_2SO_4 }{0.1~ L}

M=0.5

I hope it helps!

4 0
3 years ago
Read 2 more answers
A south magnetic pole will attract what type of magnetic pole?
Makovka662 [10]
North magnets attract the opposite side in this case south would attract to north and vise versa if it was negative it would attract to positive and vise versa


7 0
3 years ago
I REALLY NEED YOUR HELPPPPPP!!!!!!!!!!!!!!!!!!!!when the boy was skating,kinetic energy was ______and thermal energy was _______
77julia77 [94]

Answer:high,low,decreasing,increasing,low,high,potential,kinetic

Explanation:

4 0
3 years ago
What type(s) of intermolecular forces are expected between seh2 molecules?
bija089 [108]
London dispersion
dipole-dipole
7 0
2 years ago
Read 2 more answers
Other questions:
  • R-12 should be recycled instead of vented to the atmosphere because
    14·2 answers
  • What element is found in large amounts in muscle tissue and nerve tissue?
    10·1 answer
  • Atoms are the smallest particles of a(n) ______ , which make up ________. compounds, elements elements, compounds compounds, mix
    10·1 answer
  • Covalent compounds are formed when
    8·1 answer
  • Which process can affect the rate of carbon dioxide emissions or other greenhouse gas emissions by changing average temperatures
    12·1 answer
  • which factors have the greatest effect on the rate of a chemical reaction between AgNO3(aq) and Cu(s)?
    12·1 answer
  • Which of the following correctly identifies the number of each element involved in the chemical formulas
    8·1 answer
  • EZ POINTS!!!<br>what are 3 physical changes of wood.​
    6·1 answer
  • Symbol for carbon dioxide​
    6·2 answers
  • There are 300 light particles in an airtight container. Which adjustment would increase the speed of the particles?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!