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
ruslelena [56]
3 years ago
6

Why is litmus paper an example of an indicator

Chemistry
1 answer:
Alexxx [7]3 years ago
5 0
It gives visible feedback based on whether the substance being checked is an acid or an alkali
You might be interested in
If two electrons in the same atom have the same value of "l"
lesya692 [45]

Answer:

If two electrons in the same atom have the same value of "l", they are If two electrons in the same atom have the same value of "l", they are in the same orbital. in the same sublevel, but not necessarily in the same level. in different levels and in different shaped orbitals. in the same level, but different sublevel.

3 0
3 years ago
The change of state from a gas to a liquid is called?
evablogger [386]
<span>This change is called BOILING.</span>
8 0
4 years ago
Read 2 more answers
Sodium carbonate can be made by heating sodium bicarbonate: 2NaHCO3(s) → Na2CO3(s) + CO2(g) + H2O(g) At 25°C, for this reaction,
insens350 [35]

Answer:

401.17 K is the minimum temperature at which the reaction will become spontaneous under standard state conditions.

Explanation:

The expression for the standard change in free energy is:

\Delta G=\Delta H-T\times \Delta S

Where,  

\Delta G is the change in the Gibbs free energy.

T is the absolute temperature. (T in kelvins)

\Delta H is the enthalpy change of the reaction.

\Delta S is the change in entropy.

Given at:-

Temperature = 25.0 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T₁ = (25.0 + 273.15) K = 298.15 K

\Delta H = 128.9 kJ/mol

\Delta G = 33.1 kJ/mol

Applying in the above equation, we get as:-

33.1=128.9-298.15\times \Delta S

-29815\Delta S=-9580

\Delta S=-9580 = 0.32131 kJ/Kmol

So, For reaction to be spontaneous, \Delta G

Thus, For minimum temperature:-

\Delta H-T\times \Delta S=0

128.9-T\times 0.32131=0

T=\frac{128.9}{0.32131}=401.17\ K

<u>Hence, 401.17 K is the minimum temperature at which the reaction will become spontaneous under standard state conditions.</u>

6 0
3 years ago
Two chemicals A and B are combined to form a chemical C. The rate, or velocity, of the reaction is proportional to the product o
alexandr1967 [171]

Answer:

40 grams.

Explanation:

If 20 grams of C is formed from the combination or reaction of A and B chemicals in 10 minutes, 40 grams of C is formed in 20 minutes because the time is doubled so the concentration of C chemical is also doubled. If the time  is increased further, more concentration of C chemical is produced until the amount of chemicals A and B are present. If we put an enzyme in the solution, the time of the reaction can be reduced.

8 0
3 years ago
. Which of the following statement is false?
nikklg [1K]

Answer:

B

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • What effect does the presence of dissolved sodium fluoride have on the dissociation equilibrium of hydrofluoric acid? (select al
    8·1 answer
  • Could Someone help me balance this equation please
    7·2 answers
  • What is Composed of more than one particle called ?
    7·2 answers
  • The atom is neutral because
    13·2 answers
  • Compounds have properties unlike those of their elements. <br> a. True<br> b. False
    10·2 answers
  • The cytochromes are heme‑containing proteins that function as electron carriers in the mitochondria. Calculate the difference in
    14·1 answer
  • Synthetic drugs are created A. in a lab B.by people C. in nature D.by chemicals
    7·2 answers
  • How does an increase in concentration affect the rate of a reaction?
    9·1 answer
  • How many hydrogen atoms are present in .46 moles of NH3
    8·1 answer
  • How do atoms react with other atoms to create compounds?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!