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
gayaneshka [121]
2 years ago
10

Name the method that used to separate the components of petroleum oil.

Chemistry
1 answer:
maw [93]2 years ago
6 0

Answer:

fractional distillation

Explanation:

You might be interested in
If 1.02 g of nickel reacted with 750. mL of 0.112 M hydrobromic acid, how much of each will be present at the end of the reactio
kati45 [8]

Answer:

35.1% is percent yield

Explanation:

<em>Full question: Assume no volume change.  If you formed 0.0910 atm of gas, what is the percent yield?</em>

<em />

The reaction that is occurring is:

Ni + 3HBr → NiBr₃ + 3/2H₂(g)

First, we will determine moles of Ni and HBr to determine limiting reactant and theoretical yield

Using ideal gas law, we can determine the moles of hydrogen formed. Thus, we can find percent yield:

<em>Moles Ni (Molar mass: 58.69g/mol):</em>

1.02g * (1mol / 58.69g) = 0.01738moles Ni

<em>Moles HBr:</em>

0.750L * (0.112mol/L) = 0.084 moles of HBr.

For a complete reaction of the 0.084 moles of HBr you need:

0.084mol HBr * (1 mole Ni / 3 moles HBr) = 0.028 moles of Ni.

As there are just 0.01738 moles of Ni, the Ni is limiting reactant. Assuming a theoretical yield, moles of H₂ produced are:

0.01738moles Ni * (3/2 H₂ / 1 mol Ni) = 0.02607 moles H₂

Now, moles of H₂ produced are:

PV = nRT

PV/RT = n

<em>Where P is pressure (0.0910atm)</em>

<em>V is volume (2.50L)</em>

<em>R is gas constant (0.082atmL/molK)</em>

<em>T is absolute temperature in Kelvin (30°C + 273.15 = 303.15K)</em>

<em>And n are moles</em>

PV/RT = n

0.0910atm*2.50L/0.082atmL/molK*303.15K = n

0.00915 moles = n

<em />

And percent yield (Produced moles / Theoretical moles * 100) is:

0.00915 moles / 0.02607moles =

<h3>35.1% is percent yield</h3>
8 0
2 years ago
Is electrical conductivity an extensive property or an intensive property?
Thepotemich [5.8K]
Your Answer Will Be Intensive Property
8 0
3 years ago
What is the pH of a solution in which [H 3O +] = 3.8 × 10 -8 M?
7nadin3 [17]

Answer:

<h3>The answer is 7.42 </h3>

Explanation:

The pH of a solution can be found by using the formula

pH = - log [ { H_3O}^{+}]

From the question we have

pH =  -  log(3.8 \times  {10}^{ - 8} )  \\  = 7.420216...

We have the final answer as

<h3>7.42 </h3>

Hope this helps you

4 0
2 years ago
Name the process that changes matter into one or more new substances
Brums [2.3K]
Chemical change or process
6 0
3 years ago
Which of the following BEST supports the Big bang theory of the origin of the universe?
inysia [295]

Answer: first one

Explanation:

7 0
3 years ago
Other questions:
  • Which of the following best describes the electron cloud model? A. It shows that electrons usually carry a negative charge. B. I
    11·2 answers
  • Which of these are examples of physical changes? Check all that apply. burning wood freezing water cutting paper iron rusting mi
    5·2 answers
  • Match the particle to the description
    12·1 answer
  • Can you help me on my science
    9·1 answer
  • If you have 9900 g of donuts, how many donuts do you have if each donut has a mass of 150 g?
    12·1 answer
  • What is the volume of 1.2 moles of oxygen gas (o2) at 295 k and 1.2 atm? 18 l 22 l 24 l 78 l
    14·2 answers
  • Which best describes sodium chloride (NaCl)?
    8·1 answer
  • Show the complete ionic equation and net ionic equation for all the equations below, then state whether or not a precipitate (in
    7·1 answer
  • PLS HELP ME, use the periodic table to write the electron configuration of selenium
    15·1 answer
  • Sodium tungstate is Na₂WO4. Therefore, the formula for gold(III) tungstate is
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!