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
goldenfox [79]
10 months ago
8

Why is air cooled before nitrogen and oxygen are obtained

Chemistry
1 answer:
lozanna [386]10 months ago
8 0

Answer:

The main reason why air is cooled before nitrogen and oxygen are obtained is because these two gases are much more soluble in cold air than in warm air. As a result, if air were not cooled before these gases were separated, they would simply mix back together again.

You might be interested in
......................................................
Diano4ka-milaya [45]

Answer:

,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,, ,,,,,,,,

5 0
2 years ago
Uranium-238 (U-238) decays into lead-206 (Pb-206). Which of the following is a true statement?
Doss [256]
C is the correct answer
4 0
3 years ago
What occurs in a chemical reaction? ( No chemical bonds are broken. , Reactants break bonds and reform the same bonds., Reactant
ELEN [110]

Answer:

Reactants break bonds with consuming the energy and form the new bonds .

Explanation:

As the two molecules interacted with each other , the elements reshuffled the bonds and formed the new ones with shifting the energy and converting it into new products .

7 0
3 years ago
Read 2 more answers
Please help! Will mark brainlist if correct
Ratling [72]
1 and 2 are correct

Genes for the trait are present in both genders

Growing a beard in males is a sex limited trait

Explanation
The traits CAN be expressed physically
Anyone can have green eyes regardless of gender
8 0
2 years ago
Read 2 more answers
Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide. Ca) + H2O --> Ca(OH)2 In a particular
mars1129 [50]

Answer:

Percent yield = 92.5%

Explanation:

The question asks for the percent yield which can be defined as:

\frac{actual yield}{theoretical yield} .100

Where the actual yield is <em>how much product was obtained</em>, in this case 6.11 g of Ca(OH)₂, and the theoretical yield is <em>how much product could be obtained with the given reactants theoretically</em>, that is if the reaction would work perfectly. So we need to calculate first the theoretical yield.

1. First lets write the chemical equation reaction correctly and check that it is balanced:

CaO + H₂O → Ca(OH)₂

2. Calculate the amount of product Ca(OH)₂ that can be obtained with the given reactants (theoretical yield), which are 5.00g of CaO and excess of water. So the amount of CaO will determined how much Ca(OH)₂ we can obtained.

For this we'll use the molar ratio between CaO and Ca(OH)₂ which we see it is 1:1. For every mol of CaO we'll obtain a mol of Ca(OH)₂. So lets convert the 5.00 g of CaO to moles:

 Molar Mass of CaO: 40.078 + 15.999 = 56.077 g/mol

 moles of CaO = 5.00 g / 56.077 g/mol = 0.08916 moles

As we said before from the molar ratio moles of Ca(OH)₂ = moles of CaO

So the moles of Ca(OH)₂ that can be obtained are 56.077 g/mol

We need to convert this value to grams:

 Molar Mass of Ca(OH)₂ = 40.078 + (15.999 + 1.008)*2 = 74.092 g/mol

Theoretical yield of Ca(OH)₂ = 0.08916 moles x 74.092 g/mol = 6.606 g

3. Calculate the percent yield:

\frac{actual yield}{theoretical yield} .100

Percent yield = (6.11 g / 6.606g) x 100 = 92.5 %

5 0
3 years ago
Read 2 more answers
Other questions:
  • Uranium is a metallic element that is used in nuclear reactors and nuclear weapons. the vast majority of uranium found on earth
    11·1 answer
  • For+the+reaction+H2+++I2+-+2HI+the+equilibrium+constant,+kc+is+49+at+a+fixed+temperature.+Two+mole+of+hydrogen+and+two+moles+of+
    8·1 answer
  • Which of the following is not an example of an extensive physical property?
    8·2 answers
  • Question 1 of 25
    7·1 answer
  • Which molecule is polar?A;CO2 B:PF3 C:CH4 D:BF3
    10·1 answer
  • Select the correct answer.
    13·2 answers
  • Example of a stimulas and response in a organism
    11·1 answer
  • Need help please
    10·1 answer
  • The image is a model of sulfuric acid that has a chemical formula of H2SO4.
    8·1 answer
  • I NEED HELP ASAP!!!!!! LIKE RIGHT NOW PLEASE HELP!!!!! TwT
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!