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
Yuliya22 [10]
3 years ago
10

A gaseous hydrocarbon contains 80% carbon and 20% hydrogen, 1dm3 of the compound at s.t.p weighs 1.35g find the molecular formul

ar (1 mole of any gas at s.t.p occupies 22.4dm3, C=12, H=1)​
Chemistry
1 answer:
Cloud [144]3 years ago
4 0

Answer:

C₂H₆

Explanation:

To obtain molecular formula of the gas, you need to find first its molecular mass.

To find molecular mass you need to obtain moles of gasbecause molecular mass is the ratio between mass of the gas and the volume it occupies.

As at STP, 1 mole of a gas occupies 22.4dm³, 1dm³ of gas are:

1dm³ × (1mol / 22.4dm³) = 004464moles.

Its molecular mass is:

1.35g / 004464moles =

30.24g/mol

Now, if the gas is 80%C and 20%H, its <em>empirical formula (Simplest ratio of atoms in a molecule) </em>is:

80% Carbon × (1mol / 12.01g) = 6.66moles C

20% Hydrogen × (1mol / 1.01g) = 19.8moles H

Ratio of H:C is:

19.8 mol H / 6.66mol C = 3

Thus, you can know you will have 3 moles of Hydrogen per mole of Carbon, CH₃ (It weighs 15.04g/mol)

As the gas weighs 30.24 ≈ 2 CH₃

The molecular formula is:

<h3>C₂H₆</h3>
You might be interested in
HELP ME WITH QUIZ PLEASEEEE
Mekhanik [1.2K]

Answer:

c.

Explanation:

7 0
3 years ago
Read 2 more answers
How would doubling the height of an object change the object's potential
atroni [7]
B because since the height is being double the potential energy has twice the amount of space to explode
5 0
2 years ago
Chemical formula for copper gluconate I have 1.4g of Copper gluconate. There is .2g of copper within the copper gluconate. Deter
nasty-shy [4]

Answer:

The simplest chemical formula of the compound is Cu(C₆H₁₁O₇)₂

Explanation:

Given mass of sample = 1.4 g

mass of copper in the sample = 0.2 g

mass of the gluconate =1.4 - 0.2 = 1.2 g

The mole ratio is determined first using the formula;

mole ratio = reacting mass / atomic mass

atomic mass of copper = 63.55

mass of gluconate, C₆H₁₁O₇ = 12*6 + 1*11 + 16*7 = 195 g/mol

mole ratio ( copper : gluconate) = 0.2/63.55 : 1.4/195

mole ratio ( copper : gluconate) =  0.003 : 0.007

convert to whole number ratios by dividing with the smallest ratio

mole ratio ( copper : gluconate) = 0.003/0.003 : 0.007/0.003

mole ratio ( copper : gluconate) = 1 : 2

Therefore, the simplest chemical formula of the compound is Cu(C₆H₁₁O₇)₂

8 0
4 years ago
What are the uses of Acetylene ?<br>​
xxMikexx [17]

Answer:

it is used for welding and cutting

7 0
3 years ago
Read 2 more answers
I need help with this packet
Anna11 [10]
Q1. An inorganic compound is a compound where the main constituent or substance is not that of Carbon but predominantly other elements, such as I, N etc. An organic compound is one where the main substituent or main element, the element found in much greater amounts would be Carbon.

Q2. Water is considered a very good solvent, because of its ability to dissolve well with mostly all other polar compounds, and produce ions from those ionic compounds.

A. Hydrogen atoms
B. Oxygen atom.
5 0
3 years ago
Other questions:
  • Which best describes the motion of iron atoms in solid iron?
    11·1 answer
  • Are the intersection of any two half-planes necessarily a half-plane
    9·1 answer
  • Label each transition in this flow chart as a chemical change or a physical change
    15·2 answers
  • In which of the following compounds is the octet expanded to include 12 electrons?
    5·1 answer
  • How many moles of mercury(II) oxide, HgO, are needed to pro- duce 125 g of oxygen, O2?
    14·1 answer
  • How many milliliters of 0.021 moles of oxalic acid is needed to react with 80 mL of 0.11 moles of KMnO4
    6·1 answer
  • Which one of the following reactions is NOT balanced?
    10·1 answer
  • Whichstatement describes a question that can be answered by a scientific investigation
    11·1 answer
  • List five compound in chemistry and their formula​
    10·1 answer
  • 7. What measures are applicable in the context of Nepal to push energy crisis further. Describe any three points clearly.​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!