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
yulyashka [42]
3 years ago
15

Combustion analysis of 0.300 g of an unknown compound containing carbon, hydrogen, and oxygen produced 0.5213 g of co2 and 0.283

5 g of h2o. what is the empirical formula of the compound?
Chemistry
1 answer:
Lyrx [107]3 years ago
6 0
First, we have to get how many grams of C & H & O in the compound:
- the mass of C on CO2 = mass of CO2*molar mass of C /molar mass of CO2
                                        = 0.5213 * 12 / 44 = 0.142 g
- the mass of H atom on H2O = mass of H2O*molar mass of H / molar mass of H2O
                                                 =0.2835 * 2 / 18 = 0.0315 g
- the mass of O = the total mass - the mass of C atom - the mass of H atom
                          =  0.3 - 0.142 - 0.0315 = 0.1265 g
Convert the mass to mole by divided by molar mass
C(0.142/12) H(0.0315/2) O(0.1265/16) 
C(0.0118) H(0.01575) O(0.0079) by dividing by the smallest value 0.0079
C1.504 H3.99 O1 by rounding to the nearst fraction
C3/2 H4/1 )1/1 multiply by 2 
∴ the emprical formula C3H8O2
           



You might be interested in
If 41.38 g of sodium combines with
Arlecino [84]
I think it is 3 because Sus wiw word if rn
3 0
3 years ago
Research the compositions of Pennies. What was the composition of each of your Pennies prior to treatment
LenKa [72]

Answer:

History of composition

Years Material Weight (grains)

1944–1946 gilding metal (95% copper, 5% zinc) 48 grains

1947–1962 bronze (95% copper, 5% tin and zinc) 48 grains

1962 – September 1982 gilding metal (95% copper, 5% zinc) 48 grains

October 1982 – present copper-plated zinc (97.5% zinc, 2.5% copper) 38.6 grains

7 0
2 years ago
How old is the idea that matter is composed of atoms?
In-s [12.5K]
The atom theory has been around since the 19th centry 
6 0
3 years ago
4. What is the substance called that dissolves the other substance in a solution?
blagie [28]

Answer:

Solvent

Explanation:

When one substance dissolves into another, a solution is formed. A solution is a homogeneous mixture consisting of a solute dissolved into a solvent

3 0
3 years ago
10. Haley the hummingbird can fly from a pansy flower to a hibiscus flower 20 meters away in 5 seconds.
Dennis_Churaev [7]

Answer:

4

Explanation:

Speed=Distance/time, so 20/5 divide time divided by distance. so the answer is 4.

4 0
2 years ago
Read 2 more answers
Other questions:
  • Which phrase describes a characteristic of an Arrhenius base?
    5·2 answers
  • A mechanical wave moves through a medium, which can be (
    15·2 answers
  • What is the empirical and molecular formula of caffeine
    12·1 answer
  • What best describes the location of an atom's electrons?
    9·2 answers
  • Why is the brcl molecules polar??
    7·2 answers
  • What is the formula unit for a compound made from Pb4+ and oxygen?
    9·2 answers
  • Please help me it’s due today at 7:40pm please help me please please help me
    14·1 answer
  • Pollen
    10·1 answer
  • 2. Pietro decided to travel along the path shown below. How far south did Pietro travel?(The figure
    12·1 answer
  • Bao + ........ --> BaCO3 + ......
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!