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
Kruka [31]
3 years ago
11

A sample of a compound contains 60.0 g C and 5.05 g H. Its molar mass is 78.12 g/mol. What is the compound’s molecular formula?

CH C2H2 C6H6 C6H
Chemistry
2 answers:
Inessa [10]3 years ago
5 0

A sample of a compound contains 60.0 g C and 5.05 g H.

divide by molar mass of C(12) and H(1) to get molar ratio

C: 60/12=5 and H: 5/1=5

so C:H=5:5=1:1

total molar mass=78

divide by 1C+1H to find the formula: 78/(12+1)=78/13=6

compound is C6H6


BartSMP [9]3 years ago
3 0
Step 1: Calculate Moles for each Element:

Mole of C  =  60.0 / 12  =  5

Mole of H  =  5.05 / 1.008  =  5.009

Step 2: Calculate Mole Ratio:
                                             Divide each mole value with least mole value.

                                 H     :      C

                     5.009/5       :     5/5

                                  1    :     1
So,
           Empirical Formula  =  C₁H₁ or CnHn      ------ (1)

Step 3: Calculate Molecular Formula:
By using formula,
                               n  =  Molecular Mass / Empirical Formula Mass

Molecular Mass  =  78.12 g/mol

Empirical Formula Mass  =  12 + 1  = 13          ∴ C = 12 & H = 1
So,
                               n  =  78.12 / 13 

                               n  =  6

Putting value of n in eq. 1,
  
                                                  C₆H₆
Result:
            
The correct answer is C₆H₆.
You might be interested in
Which element has a meltin point higher than the melting point of rhenium
blondinia [14]

Answer:

Tungsten

Explanation:

5 0
3 years ago
One atom of silicon can properly be combined in a compound with
Nina [5.8K]
<span>One atom of silicon can properly be combined in a compound with two atoms of oxygen.</span>
7 0
3 years ago
Read 2 more answers
I can be found in the 4th period on the periodic table.
Rainbow [258]

Vanadium (V)

Vanadium is the only one in the 4th period here so

4 0
3 years ago
Can someone help me Balance chemical equations please
horrorfan [7]
2NaClO3 = 2NaCl + 3O2
Hopes this helps <33
4 0
2 years ago
Describe the change that you made that led to the decrease in the size of the greenleaf population. Explain why the change led t
slavikrds [6]

Answer:

DO YOU STILL NEED HELP?

Explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • What units are used to express energy transfer?
    14·2 answers
  • What makes ice cubes melt
    10·2 answers
  • Im in the middle of a chem test and i literally have no clue what is happening
    8·1 answer
  • Which of the following correctly shows the relationship, in terms of number of particles, of the three substances?
    11·1 answer
  • 0.20 g of sodium hydroxide (NaOH) pellets are dissolved in water to make 4.5 L of solution. What is the pH of this solution?
    8·1 answer
  • A scientist has two substances that she is testing in her lab: a pink
    9·1 answer
  • What is a displacement reaction
    7·2 answers
  • Subscribe to pewdiepie<br><br> Before coco pass him
    6·2 answers
  • When a gas in a cylinder is compressed at constant temperature by a piston, the pressure of the gas increases. Consider the foll
    8·1 answer
  • Calculate the molarity of a Ba(OH)2 solution if 1950 mL is completely titrated by 26.1 mL of 0.505 M HNO3
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!