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
Tells how many of each atom there are in a formula
Sveta_85 [38]

Answer:

\large \boxed{\mathrm{subscripts}}

Explanation:

Subscripts are numbers written after elements, subscripts indicate how many of each atom there are in a compound.

8 0
3 years ago
Read 2 more answers
What is the lowest common multiple of 4, 10, and 16?
jonny [76]
The least common multiples of 4, 10, and 16 is 80.
3 0
3 years ago
Which of the following could describe the velocity of a rocket?
aleksandrvk [35]

Answer:

D) 8,000 m/s

Explanation:

8 0
3 years ago
What is the answer ?
Fantom [35]
The answer is C Does it propaget
4 0
3 years ago
Read 2 more answers
Balance the following skeleton reactions and identify the oxidizing and reducing agents:(b) CrO₄²⁻(aq) + Cu(s) → CrOH₃(s) + CuOH
andrew-mc [135]

The balanced skeleton reactions are given below

2CrO₄²⁻(aq) + 3Cu(s)  +8H_{2} O(l) → 2Cr(OH)₃(s) + 3Cu(OH)₂(s) + 6OH^{-}(aq)

The oxidising agent and  reducing agents are Cr and  Cu .

There are following steps involve in balance redox reaction in basic medium .

  • First divide the reaction into two half reactions which give oxidation and reduction half reaction.
  • Then balance the elements other than oxygen and hydrogen atom.
  • Balance the oxygen atom by adding H_{2} O where number of oxygen is less .
  • Balance the hydrogen atom by adding H^{+} on another side of where water molecule added.
  • Add OH^{-} ions to both sides to neutralize  H^{+} ion.
  • Combine  H^{+} and OH^{-} ion to make H_{2} O .
  • Balance the charge by adding e^{-} .
  • Add the half reaction  .

The species which reduces the other species in the redox reaction is called oxidizing agent . Similarly , the species which oxidize the other species in the redox reaction  is called reducing agent .

To learn more about reducing agents please click here ,

brainly.com/question/2890416

#SPJ4

4 0
1 year ago
Other questions:
  • Can someone please help me on #2
    10·1 answer
  • Which of the following would be the best object for stirring hot liquids? (1 point)
    7·2 answers
  • How does convection occur in the troposhere ​
    11·1 answer
  • For the reaction C6H14(g) ------> C6H6(g) + 4H2(g), the rate of formation of hydrogen gas, H2 was found to be 2.5 x 10-2 atm/
    11·1 answer
  • Calculate the mass of khc8h4o4 that reacts with 15 ml of the naoh solution
    9·1 answer
  • How many liters would you need to make a 0.8 M solution with 20 grams of lithium chloride?
    15·1 answer
  • Why do non-metals bond with each other to form covalent compound?
    10·1 answer
  • What is the slope of the line?
    10·1 answer
  • What reaction would you expect chromium to have with water
    13·1 answer
  • Write a variable expression that represents the following word phrase: three more than two times the difference of x and one.​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!