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
Flura [38]
3 years ago
10

Mandelic Acid is an organic acid composed of carbon (63.15%), hydrogen (5.30%), and oxygen (31.55%). Its molar mass is 152.14 g/

mol. Determine the empirical and molecular formulas of the acid.

Chemistry
2 answers:
Yuki888 [10]3 years ago
6 0

Answer:

the empirical formula = the molecular formula = C8H8O3

Explanation:

Step 1: Data given

Suppose the mass is 100.0 grams

Mandelic acid contains:

Carbon: 63.15 % = 63.15 grams

Hydrogen: 5.30 % = 5.30 grams

Oxygen: 31.55 % = 31.55 grams

Molar mass C = 12.01 g/mol

Molar mass H = 1.01 g/mol

Molar mass O = 16.00 g/mol

Step 2: Calculate moles

Moles = mass / molar mass

Moles C = 63.15 grams / 12.01 g/mol

Moles C = 5.258 moles

Moles H = 5.30 grams / 1.01 g/mol

Moles H = 5.25 moles

Moles O = 31.55 grams / 16.00 g/mol

Moles O = 1.97 moles

Step 3: Calculate mol ratio

We divide by the smallest amount of moles

C: 5.258 moles / 1.97 = 2.67

H: 5.25 / 1.97 = 2.66

O: 1.97 / 1.97

The empirical formula is C8H8O3

The molecular mass of this empirical formula is 152.14 g/mol

This means the empirical formula = the molecular formula = C8H8O3

Dafna1 [17]3 years ago
3 0

Answer:

Empirical formula is C3H3O

Molecular formula C9H9O3

Explanation:

From the question given, we obtained the following data:

Carbon = 63.15%

Hydrogen = 5.30%

Oxygen = 31.55%

We can obtain the empirical and molecular formula by doing the following as illustrated in the attached file. Please see attachment for explanation.

You might be interested in
Balance the equation 2kclo3 3o2 + kcl
sergij07 [2.7K]
Answer is 2KClO3 3O2 + 2KCl
5 0
3 years ago
2+2=? -1 3 quick math
tino4ka555 [31]
EVERYDAY MANS ON THE BLOCK. Lol its 4. You got this from Mans Not Hot, didn't you? xD
4 0
3 years ago
Read 2 more answers
Imagine that the moon’s orbit wasn’t elliptical and it that it did not orbit the earth at a 5 degree angle. How would this chang
Readme [11.4K]

Answer:

Without the tilt, lunar eclipse will happen every month.

4 0
3 years ago
Read 2 more answers
Help pls , question is in picture
Nata [24]

Explanation:

IM PRETTY SURE IT IS D !! IF ITS WRONG IM SORRY THAT WHAT

I GOT

8 0
3 years ago
Read 2 more answers
How is the electron cloud model different from Bohr's atomic model?
Cerrena [4.2K]
In the electron cloud model, the atoms are in unpredicted places. But in the Bohr model, atoms are in "rows"
7 0
3 years ago
Other questions:
  • A seed can be round or wrinkled. Seed shape is
    10·2 answers
  • In a modern system of classification, two organisms would be
    5·1 answer
  • How many atoms are in 6.4 moles of vanadium
    15·1 answer
  • What is the change in atomic number when an atom emits a beta particle?
    15·2 answers
  • if atom X has 6 protons,6 neutrons and 6 electrons and aton Z has 6 protons,7neutrons and 6 electrons,atom x and atom z are isot
    12·1 answer
  • NEED HELP NOW which materials allow heat to pass through them easily?
    11·2 answers
  • Nepal is rich in species diversity why?? Explain with any three reason. Help this beginer out !!!​
    6·1 answer
  • How many grams are in a sample of 0.55 mol of K?
    12·1 answer
  • ¿Cuál es la cantidad de electrones (e-) de Níquel si tiene una masa atómica de 58.6 y un número
    7·1 answer
  • How do the valence electrons of an atom affect chemical reactions?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!