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
dsp73
3 years ago
12

✯Hello✯☆(❁‿❁)☆

Chemistry
1 answer:
sveticcg [70]3 years ago
5 0

do you mean fractional distillation of crude oil ?

if you do then this is what happens:

basically, crude oil is made up of a lot of hydrocarbons so it's put into a fracitonating column to separate these compounds into fractions. the top of the fractionating column is colder whereas the bottom of the column is hotter.

gases, petrol, diesel and kerosene come out near the top of the top of the column because they are shorter chains. substances near the top of the column also have a lower boiling point (since it's cooler and there's less intermolecular forces).

the substances at the top of the column are typically useful fuels because they have a higher ease of ignition (higher up=easier to ignite, lower down = harder to ignite). Also, substances at the top have a low viscosity so they can flow easily.

substances that come out near the bottom of the fracitonating column include fuel oil and bitumen.

these are longer chains of hydrocarbons and bitumen is used for road surfacing.

these substances have a high viscosity (harder to flow) and have a high boiling point since they have more intermolecular forces which require a lot of energy to break. Also the bottom of the fractionating column is warmer and this is where these fractions are released.

You might be interested in
True or False. Physical changes result in the formation of a new substance.
Umnica [9.8K]

Answer:

1. false

2. true

Explanation:

I hope this helps

3 0
3 years ago
A student decides to jump off a skateboard toward the east. Based on the action-reaction forces, which direction will the skateb
Anna11 [10]

Answer:

l

Explanation:

5 0
3 years ago
“While observing a chemical reaction, how can you tell which reactant is limiting?”
bulgar [2K]

Answer:

Then the substance would be the first to run out which signifies the completing of the reaction.

Explanation:

3 0
3 years ago
What mass of silver oxide, Ag2O is required to produce 25.0 g of silver sulfadiazine, AgC10H9N4SO2, from the reaction of silver
Wittaler [7]

Answer:

8.1107 g

Explanation:

The given reaction:

2C_{10}H_{10}N_4SO_2+Ag_2O\rightarrow 2AgC_{10}H_9N_4SO_2+H_2O

Given that:

Mass of silver sulfadiazine = 25.0 g

Molar mass of silver sulfadiazine = 357.14 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{25.0\ g}{357.14\ g/mol}

Moles= 0.07\ mol

From the reaction,

2 moles of silver sulfadiazine are formed from 1 mole of silver oxide

So,

1 mole of silver sulfadiazine are formed from 1/2 mole of silver oxide

0.07 mole of silver sulfadiazine are formed from 1/2*0.07 mole of silver oxide

Moles of silver oxide = 0.035 moles

Molar mass  of silver oxide = 231.735 g/mol

Mass = Moles * Molar mass = 0.035 moles * 231.735 g/mol = 8.1107 g

4 0
3 years ago
A neutral atom has 12 protons and 13 neutrons in its nucleus. What is its mass number?
Thepotemich [5.8K]

Answer: 68

Explanation: u times them

3 0
3 years ago
Other questions:
  • What is a dynamic process?
    15·1 answer
  • What defines endothermic reactions and exothermic reactions? Select all that apply.
    5·2 answers
  • 1.
    13·1 answer
  • Consider the reaction:C2H5OH(l) + 3O2(g) 2CO2(g) + 3H2O(l); DH = -1.37 x 103 kJConsider the following propositions:I. The reacti
    11·1 answer
  • A student is given a stock solution of 1.00 M NaCl in water. They are asked to make 5 mL of 0.0500 M NaCl. How much of the stock
    13·1 answer
  • Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs, and to ignite solid fuel ro
    14·1 answer
  • 1.36x10^22molecules Fe2O3 to grams
    14·1 answer
  • The difference between glycogen and amylopectin is:_________
    12·1 answer
  • Convert 6.03 m to km using Dimensional Analysis
    12·1 answer
  • Which of these is an example of chemical separation of a substance?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!