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
satela [25.4K]
3 years ago
13

a student takes three beakers and places 250 ml of water in each. the student then adds a cube of sugar to all three beakers. th

e first beaker is stirred, the second beaker is heated, and the third is left alone. which of the following statements is true? the first beaker dissolves faster than the other two. the second beaker dissolves faster than the other two. the third beaker does not dissolve as fast as one and two. there is not enough information to determine the answer.
Chemistry
2 answers:
Olegator [25]3 years ago
6 0
The third beaker doesnt dissolve as fast as one and two

as it has nothing changed to it

when you stir it gives the sugar more kinetic energy to dissolve
when you heat up the solution it also gives the sugar more kinetic energy

hope that helps 
rjkz [21]3 years ago
6 0

Answer : The correct statement is, the third beaker does not dissolve as fast as one and two.

Explanation :

According to the question, we know that the dissolving process is faster in case of heating as compared to the stirring. And the dissolving process also depends on the how much amount of heat are provided to the substance or the how much faster will you stirring mixture.

The second beaker dissolves faster than the other two, this statement is true but we do not know the how much heat are given to the beaker.

From the given statements we conclude that the correct statement is, the third beaker does not dissolve as fast as first and second beakers because in the third beaker there is no heat or mechanical energy are provided for mixing of the substance.

Hence, the correct statement is, the third beaker does not dissolve as fast as one and two.

You might be interested in
Determine the value of the equilibrium constant, Kgoal, for the reaction C(s)+12O2(g)+H2(g)⇌12CH3OH(g)+12CO(g), Kgoal=? by makin
Licemer1 [7]

Answer:

1.71x10²⁷

Explanation:

If we sum 1/2 of (3) + 1/2 of (1):

1/2 (3.) C(s) + 1/2O₂(g) ⇌ CO(g), K₃ = √2.10×10⁴⁷  = 4.58x10²³

1/2 (1)   1/2CO₂(g) + 3/2H₂(g) ⇌ 1/2CH₃OH(g) + 1/2H₂O(g), K₁ = √1.40×10² = 11.8

C(s) + 1/2O₂(g) +<u> 1/2CO₂(g) </u>+<u> 3/2H₂(g</u>) ⇌ 1/2CH₃OH(g) + <u>1/2H₂O(g)</u> + <u>CO(g)</u>

K' = 4.58x10²³ * 11.8 = 5.42x10²⁴

+1/2 (2):

<u>1/2 CO(g)</u> +<u> 1/2H₂O(g)</u> ⇌<u> 1/2CO₂(g)</u> + <u>1/2H₂</u> (g), K = √1.00×10⁵ = 316.2

C(s) + 1/2O₂(g) + H₂(g) ⇌ 1/2 CHO₃H(g) + 1/2CO(g)

K'' = 5.42x10²⁴* 316.2 =

<h3>1.71x10²⁷</h3>

5 0
4 years ago
A solution is prepared by dissolving 0.23 mol of lactic acid and 0.27 mol of sodium lactate in water sufficient to yield 1.00 L
PtichkaEL [24]

Explanation:

The solution of the lactic acd and sodium lactate is referred to as a buffer solution.

A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa. In this case, the weak acid is the lactic acid and the conjugate base is the sodium lactate.

Buffer solutions are generally known to resist change in pH values.

When a strong base (in this case, NaOH) is added to the buffer, the lactic acid will give up its H+ in order to transform the base (OH-) into water (H2O) and the conjugate base, so we have:

HA + OH- → A- + H2O.

Since the added OH- is consumed by this reaction, the pH will change only slightly.

The NaOH reacts with the weak acid present in the buffer sollution.

6 0
3 years ago
Read 2 more answers
Covalent compounds occur------
irga5000 [103]

Answer:

Only between nonmetals

Explanation:

  • Covalent compounds are compounds that are formed as a result of covalent bonding between nonmetal atoms.
  • Covalent compounds occur only between non metals, where atoms of the nonmetals involved join to form a covalent bond as a result of sharing of electrons.
  • <u><em>Electrons shared during the formation of covalent bond, may be from one atom involved or each atom contributing equally to the bond formation.</em></u>
  • An example of covalent compounds include, phosphorus (v) oxide, methane, water, CO2,etc.
4 0
3 years ago
Which of the following equations is balanced and follows the Law of Conservation of Mass?
Jet001 [13]

Option B is a balanced equation and follows the Law of Conservation of Mass. This is because the number of atoms of each element on both sides are the same.

7 0
3 years ago
in physics class Annie is designing a small circuit that can operate a mixer identify the device she should use in the circuit a
Mandarinka [93]
I don’t see any of the possible answers
3 0
3 years ago
Other questions:
  • The diagram shows a carrier wave before and after modulation. The diagram best represents which type of modulation? FM phase AM
    12·2 answers
  • PLEASE PLEASE PLEASE HELP SOS ASAP
    7·2 answers
  • Gasoline is a hydrogen and carbon compound. It is mixed with air in the carburetor of a car. What conditions within the carburet
    15·1 answer
  • How does calcium obey the octet rule when reacting to form compounds?
    6·2 answers
  • Which element has a grater atomic radius ?phosphorus or bismuth?
    15·1 answer
  • What is the pOH of a 0.013 M Ca(OH)2 solution?
    14·1 answer
  • 2 What is the correct sequence of steps for the preparation of a pure sample of copper(II) sulfate
    15·1 answer
  • decomposition of hydrogen peroxide produce water and oxygen . calculate the volume of O2 formed from the decomposition of 150 mL
    6·1 answer
  • How much thermal energy must be added to a 87.5 g sample of ice at -25oC completely melt the entire sample? As part of your work
    9·1 answer
  • 7. Lli(s) + N₂(g) → 2 Liz Ncs)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!