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
trasher [3.6K]
2 years ago
5

How many mL of a 2.50 M K2SO4 solution are required to obtain 1.20 moles of K2SO4?

Chemistry
1 answer:
Charra [1.4K]2 years ago
6 0

The answer is: " 480 mL of [2.50 M K₂SO₄] solution."

____________

<u>Explanation</u>:

Given :
1.20 mol K₂SO₄   ⇒   <u>__?  mL </u>__  of 2.50 M K₂SO₄  ;
____________
<u>Note</u>: 2.50 M  K₂SO₄ = 2.50 mol/ L ;

____________

1.20 mol  =  \frac{1 L}{2.50 mol} ;

The units of "mols" cancel;  since "mol / mol = 1 ;

and we have:  " \frac{(1.20*1) L}{(2.50)} = [{\frac{1.20}{2.50}}] L = (0.480) L ;  
 
 →  {Note: we want to keep the appropriate number of "significant figures"; so we write our answer:  "0.48 L" ;  as:  "0.480 L" .

 → Now, we want to solve for the number of "mL ("milliliters").
 →Note the exact conversion:   "1000 mL = 1 L ;

So:  ("0.480 L") * (1000) = " 480 mL of solution." → which is our answer.
____________
Hope this helps!

____________

You might be interested in
HELP ASAP
Vera_Pavlovna [14]

Answer:

Energy is transferred from one object to another when a reaction takes place.

Explanation:

Energy comes in many forms and can be transferred from one object to another as heat, light, or motion, to name a few.  

The answer could be It is a well known fact that energy can neither be created and nor be destroyed but can be transformed from one form to another.

Now talking about your example in a typical light bulb electrical energy is converted into light energy and heat energy. Now when the electric current flows through the conductor/filament in the light bulb,this would cause vibrations and the free ions are more likely to go to an higher energy level,and when the ions come back to their original state,the difference in the two energy levels is usually emitted as a photon,thus light energy is obtained and the heat energy is the energy dissipated as a result of flow of electricity through the conductor.

Anything that gets transformed into light energy or in better words ElectroMagnetic Energy would be a result of this.

5 0
3 years ago
Mechanical advantage = load/_______​
arlik [135]

Answer:

Mechanical advantage = load/<u>effort</u>

Explanation:

Mechanical advantage is like a ratio of load to effort and many machines like pulleys depend on this relationship between load and effort for it to work.

8 0
3 years ago
Read 2 more answers
Convert 0.95 kilograms into centigrams. (1 g = 100 cg; 1 kg = 1000 g)
svet-max [94.6K]

Answer:

95,000 centigrams

Explanation:

There is 1000 CG in 0.01 kilograms

so you do 1000*95 which equals 95,000 centigrams.

6 0
3 years ago
Which of the following conditions on Mars would be the first to kill a human who is unprotected and unassisted by life support?
TiliK225 [7]

Answer:

D

Excess solar radiation due to a missing magnetic field.

Explanation: Solar proton events (SPEs) are bursts of energetic protons accelerated by the Sun. They occur relatively rarely and can produce extremely high radiation levels. Without thick shielding, SPEs are sufficiently strong to cause acute radiation poisoning and death.

Hope this hels

plz mark brainliest

6 0
3 years ago
Read 2 more answers
What is the shape of a molecule containing three covalent bonds with one unshared pair?
Schach [20]

pyramidal, if you have a molecule kit, i would strongly recommend watching a video of someone using a kit explaining the different shapes and following along. It helps a lot!

7 0
3 years ago
Other questions:
  • Where does the term carbohydrate come from? Explain by referring to the parts of this word
    11·1 answer
  • Which of the following statements correctly explains the relationship between humidity and temperature? The higher the temperatu
    11·1 answer
  • Determine the number of bonding electrons and the number of nonbonding electrons in the structure of OF2. Enter the number of bo
    13·2 answers
  • The balanced chemical equation for the combustion of methane is: CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g) Which of the following sta
    6·1 answer
  • How can atoms be neutral if they contain charged particles?
    6·1 answer
  • Which statement best explains the backward motion of the boat as the person moves forward
    11·1 answer
  • In an exothermic reaction, the average kinetic energy of the particles of matter ib the products _____
    7·1 answer
  • Will you Please answer 20!
    15·2 answers
  • Compared to orange light, violet light
    10·1 answer
  • 2. What pressure is required to compress 196.0 L of air at 1.00 atmosphere into a cylinder
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!