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
sashaice [31]
2 years ago
14

A sugar solution consists of 0.25

Chemistry
1 answer:
leonid [27]2 years ago
4 0

Answer:

Explanation:

Your goal when trying to find a solution's molarity is to determine how many moles of solute you have in one liter of solution.

Notice that your solution has a volume of 100.0 mL. Since

∣∣ ∣∣¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯aa1 L=103mLaa∣∣−−−−−−−−−−−−−−−−

you can say that your solution has a volume that is equivalent to 110th of 1 L. Therefore, the number of moles that will be present in your sample will represent 110th of the number of moles present in 1 L of this solution.

So, use sucrose's molar mass to find the number of moles present in your sample

10.0g⋅1 mole sucrose342.34g=0.02921 moles sucrose

So, if this is how many moles you have in 100.0 mL of this solution, it follows that 1 L will contain

1L solution⋅103mL solution1L solution⋅0.02921 moles100mL solution=0.2921 moles

You get 0.2921 moles of sucrose, you solute, per liter of solution, which means that the solution's molarity will be

molarity=c=∣∣ ∣∣¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯aa0.292 mol L−1aa∣∣−−−−−−−−−−−−−−−−−

The answer is rounded to three sig figs.

Answer link

You might be interested in
Hi can u help me pls? I'm totally stuck . The natural source of acidity in rain water is _____.
kykrilka [37]

Answer-The correct option is option d with says all of the above.

Explanation- All three acids that are given combined together to form acid rain in which nitric and sulphuric acid are stronger acids present while carbonic acid is a weaker one.

The carbon dioxide admitted in air combines with water to form carbonic acid and gives a weak acidic nature to rainwater. Pollution in nature makes sulphur and nitrogen present in air react to form the stronger acids responsible for acid rain.

5 0
3 years ago
λmax for the π → π* transition in ethylene is 170 nm. Is the HOMO-LUMO energy difference in ethylene greater than or less than t
-Dominant- [34]

Answer:

the HOMO-LUMO energy difference in ethylene is greater than that of cis,trans−1,3−cyclooctadiene

Explanation:

The λmax is the wavelength of maximum absorption. We could use it to calculate the HOMO-LUMO energy difference as follows:

For ethylene

E= hc/λ= 6.63×10^-34×3×10^8/170×10^-9= 1.17×10^-18J

For cis,trans−1,3−cyclooctadiene

E= hc/λ=6.63×10^-34×3×10^8/230×10^-9=8.6×10^-19J

Therefore, the HOMO-LUMO energy difference in ethylene is greater than that of cis,trans−1,3−cyclooctadiene

8 0
2 years ago
What has research determined about the orbit of an electron around a nucleus
polet [3.4K]
Hello,

Here is your answer:

The proper answer to this question is that "e<span>ach sub-level electron type has a unique path where it will likely to be found".

If you need anymore help feel free to ask me!

Hope this helps!</span>
4 0
3 years ago
Read 2 more answers
If gas in a sealed container has a pressure of 50 kPa at 300 K, what will the pressure be if the temperature rises to 360 K?
VLD [36.1K]
The answer is 60 kpa, also did you try look it up because that is what i did but i did not copy and paste it. 

hope this helped have a good day
 
6 0
3 years ago
Find the missing particle or isotope
hoa [83]

Answer:

the answer would be 33

because Explanation:

7 0
3 years ago
Other questions:
  • The first dissociation constant of a diprotic acid is always larger than the second. a. True b. False
    5·1 answer
  • What protects the Earth from meteorites and the sun's rays? (4 points)
    10·1 answer
  • Why ammonia has high bond angle than water
    15·1 answer
  • How did oxygen come up to make 21% of the earth's present atmosphere?
    9·1 answer
  • The rate at which a reaction is proceeding at a specific point in time is called the:______
    12·2 answers
  • During a synthesis reaction, 1.8 grams of magnesium reacted with 6.0 grams of oxygen. What is the maximum amount of magnesium ox
    8·1 answer
  • Consider the reaction 2 A(g) ⇄ B(g) + C(g) K = 0.035 A mixture of 8.00 moles of B and 12.00 moles of C in a 20.0 L container is
    14·1 answer
  • Einstein‘s equation implies that a large amount of mass can be converted into a small amount of energy. True or false
    6·1 answer
  • Can someone help me...........................
    8·2 answers
  • 3. What is the density of a 100 grams (g) box that displaces 20 mL of water?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!