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
qwelly [4]
3 years ago
10

Plzz help i will give brillants and stars and thx.

Chemistry
2 answers:
givi [52]3 years ago
5 0
Vaporization turns liquid into gas,about the energy one I’m not completely sure but it’s energy added the particles slow down/confiscation transforms a gas into a liquid energy removed and the particles speed up
dalvyx [7]3 years ago
3 0
Hdhdjejdhebdehxhshwhdb d nonsense
You might be interested in
If you live in the southern hemisphere, what season would you be experiencing in position C this diagram?
lisabon 2012 [21]
The answer is spring it would be fall in the north and spring in the south
7 0
3 years ago
Read 2 more answers
What mass of ether will be produced is 221 g of ethanol reacts with a 66 percent yield?
Keith_Richards [23]
@pandamille help her please!!!!
5 0
3 years ago
(((NEED ANSWER QUICK!!!)))<br><br> Which is the stronger conjugate base, CN- or OCN-? Explain
Shkiper50 [21]

Answer:

The stronger conjugate base will be the weaker acid; i.e., the acid with the smaller Ka-value.

Explanation:

Given conjugate base CN⁻ => weak acid => HCN =>  Ka =4.9 x 10⁻¹⁰

Given conjugate base OCN⁻ => weak acid=> HOCN => Ka = 3.5 x 10⁻⁴

Ka(HCN) << Ka(HOCN) => CN⁻ is a much stronger conjugate base than OCN⁻

6 0
3 years ago
Which process is endothermic?a)b)c)d)The evaporation of water from the skin.The burning of candle wax.The oxidation of iron in a
BlackZzzverrR [31]

Answer:

The answer is option a. The evaporation of water from the skin

Explanation:

An endothermic reaction is any synthetic reaction that retains heat from its environment. The ingested energy gives the enactment energy to the reaction to happen.

No new bonds formed, no bonds broken in this example. water molecules go from liquid to vapour (gas ), intermolecular bond exist between polar (-OH) molecules and energy is required to break these bonds during the change from liquid to gas. So, it is endothermic .

Remaining three above examples are exothermic. combustion of gas releases energy(exothermic). burninig of the candle exothermic because the energy released from the oxygen into carbon dioxide and water.oxidation of iron also exothermic

6 0
3 years ago
a student prepares a dilute solution of sodium hydroxidem, NaOH (aq), starting with 6 M sodium hydroxide. She then titrates a 1.
Serjik [45]

Answer:

M = 0.3077 M

Explanation:

As I said in the comments, you are missing the required volume of the base to react with the KHP. I found this on another site, and the volume it used was 21.84 mL.

Now, KHP is a compound often used to standarize NaOH or KOH solutions. This is because it contains a mole ratio of 1:1 with the base, so it's pretty easy to use and standarize any base.

Now, as we are using an acid base titration, the general expression to use when a acid base titration reach the equivalence point would be:

n₁ = n₂   (1)

This, of course, if the mole ratio is 1:1. In the case of KHP and NaOH it is.

Now, we also know that moles can be expressed like this:

n = M * V   (2)

And according to this, we are given the volume of base and the required mass of KHP. So, if we want to know the concentration of the base, we need to get the moles of the KHP, because in the equivalence point, these moles are the same moles of base.

The reported molar mass of KHP is 204.22 g/mol, so the moles are:

n = 1.372 / 204.22 = 6.72x10⁻³ moles

Now, we will use expression (2) to get the concentration of the diluted base:

n = M * V

M = n / V

M = 6.72x10⁻³ / 0.02184

M NaOH = 0.3077 M

This is the concentration of the dilute solution of NaOH

3 0
3 years ago
Other questions:
  • Question 5 What law states that energy can neither be created nor destroyed, but it is transformed? Question 5 options: Law of T
    6·2 answers
  • Definition of reactant
    11·1 answer
  • Food that people eat provides us with what that we need to survive?
    8·2 answers
  • What properties of matter explain why the weight of an object on the moon is different than the weight of the same object on ear
    8·1 answer
  • 5. Astronomers recently discovered a moon that does not<br> orbit a planet.
    13·1 answer
  • Help meeee!<br> 3874 dkg = _____ dg
    14·1 answer
  • In order to listen to the radio you need to use ______________ and _________ waves.
    6·2 answers
  • Balance the reaction below using the correct coefficient.<br><br> __Ag2S --&gt; __Ag + __S8
    6·1 answer
  • Father, I come to you worn and weary from the hard times I have walked through recently. I come to you seeking your shelter wher
    7·2 answers
  • 7. What assumption of the kinetic-molecular theory explains why a gas can expand to fill a container?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!