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
Yanka [14]
3 years ago
8

Calculate the molar mass of the following:

Chemistry
1 answer:
Westkost [7]3 years ago
7 0

Answer:

a)C2HBrClF3 = 197.35 g/mol

b)C12H14N2CL2 = 229.06g/mol

c)C8H10N4O2 = 194.22g/mol

d) CO(NH2)2=60.07 g/mol

e)C17H35CO2Na = 306.52 g/mol

Explanation:

Molar mass of a compound is equal to the sum of the atomic masses of the constituent elements.

a) C2HBrClF3

Molar\ mass = 2(At. mass C)+1(at.mass H) +1(At. mass Br) + 1(At.mass Cl) + 3(At.mass F)\\=2(12.01 g/mol) + 1(1.01g/mol)+1(79.90 g/mol) +1(35.45g/mol)+3(18.99g/mol)=197.35g/mol

b) C12H14N2CL2

Molar\  mass = 12(C) + 14(H) + 2(N) + 2(Cl)\\\\=12(12.01) + 14(1.01) + 2(14.01) + 2(35.45) = 229.06g/mol

c) C8H10N4O2

Molar\  mass = 8(C) + 10(H) + 4(N) + 2(O)\\\\=8(12.01) + 10(1.01) + 4(14.01) + 2(16.00) =194.22g/mol

d) CO(NH2)2

Molar\ mass = 1(C) + 1(O) + 2(N) + 4(H)\\\\=1(12.01) + 1(16.00) + 2(14.01)+4(1.01) =60.07 g/mol

e) C17H35CO2Na

Molar Mass = 18(C) + H(35) +2(O) + 1(Na)\\\\=18(12.01) + 35(1.01) + 2(16.00) + 1(22.99) =306.52 g/mol

You might be interested in
To what volume should 25ml of 15m nitric acid be diluted to prepare a 3m solution
Maurinko [17]

We can use the dilution formula to find the volume of the diluted solution to be prepared

c1v1 = c2v2

Where c1 is concentration and v1 is volume of the concentrated solution

And c2 is concentration and v2 is volume of the diluted solution to be prepared

Substituting the values in the equation

15 M x 25 mL = 3 M x v2

v2 = 125 mL

The 25 mL concentrated solution should be diluted with distilled water upto 125 mL to make a 3 M solution

6 0
4 years ago
EXPLAIN how to identify the reducing agent in a reaction of magnesium with oxygen
Alina [70]

Explanation:

Mg+O>MgO

Here the mg loses it electron and is oxidised and oxygen gains and is reduced.

Mg(2+)and O(2-)

Mg is a reducing agent it makes oxygen to be reduced while itself being oxidised and vice versa.

8 0
3 years ago
Who is telling what happens in Home Début?
nekit [7.7K]

Answer:

D

Explanation:

Its in first person

8 0
3 years ago
Discribe how continents and oceans are carried on tectonic plates
Vanyuwa [196]
This question seems to be very basic .the ocean is above the plate, the plate material is heavier than water (it being rock). That's pretty much all of it. The plates grind a little and new land pushes up at plate boundaries but this does not seem to be related. The heavier material is below and the lighter above, those being rock and water respectively.
hope this helped u
7 0
3 years ago
How many electrons would a neutral atom of nitrogen need to gain in order to have a full valence electrons shell
Alexeev081 [22]
Nitrogen atom has a valence electrons of 5 electrons. A full octet or full valence electrons shell is composed of 8 electrons. Hence, an additional of 4 electrons are needed for it to become full. this is achieved by covalent bonding where electrons are shared or ionic bonding where electrons are transferred.
4 0
4 years ago
Read 2 more answers
Other questions:
  • Given 7.65 mol AgNO3, determine the number of formula units.
    7·1 answer
  • it is difficult to evaluate the toxicity of substances what factors can vary how harmful a chemical is dose of exposure age and
    8·1 answer
  • You will be adding a solution containing potassium carbonate to a solution containing hydrochloric acid. What risk is associated
    13·1 answer
  • Some transport processes use transport proteins in the plasma membrane, but do not require atp. this type of transport is known
    8·1 answer
  • Identify the structure that contains the inherited instructions that determine the different color patterns in these snakes
    8·1 answer
  • Move the red warning icon to focus of the earthquake.
    10·1 answer
  • Convert the following word equation into a formula equation
    13·2 answers
  • What coefficient is needed to balance the reaction
    9·1 answer
  • Hello I’m having trouble with this question May you help me? Thank you!
    14·1 answer
  • (LAB 9: SPECTROSCOPY: ABSORPTION & EMISSION)What are the four steps of the scientific method?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!