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
serg [7]
3 years ago
15

Which represents the self-ionization of water at 25°C? H2O + H2O 2H2 + O2 H2O + H2O H2O2 + H2 H2O + H2O 4H+ + 2O2- H2O + H2O H3O

+ + OH-
Chemistry
2 answers:
artcher [175]3 years ago
8 0

Answer: Option (d) is the correct answer.

Explanation:

When molecules of same substance combine together to result in the formation of ions then this type of reaction is known as self-ionization.

For example, H_{2}O + H_{2}O \rightarrow H_{3}O^{+} + OH^{-}

So, here two molecules of water are combining and they result in the formation of hydronium ion (H_{3}O^{+}) and hydroxide ion (OH^{-}).

Hence, this reaction is a self-ionization reaction.

Vitek1552 [10]3 years ago
6 0
The fourth answer is correct 
H20 + H20  H30 + 0H-
You might be interested in
Which of the following statements is true about the sense of smell? Men and women smell the same number of odors. The amount of
puteri [66]

Answer:

I think it is B

which I think is the correct answer

4 0
3 years ago
Read 2 more answers
Please help its difficult
Likurg_2 [28]

Answer:

pounds

pounds pounds pounds

8 0
2 years ago
How many moles are in 4.3 x 10 ^22 molecules of Na3PO4
Sever21 [200]

Answer:

0.071 moles of Na₃PO₄ .

Explanation:

Given data:

Number of molecules of Na₃PO₄ = 4.3× 10²² molecules

Number of moles = ?

Solution:

1 mole contain 6.022 × 10²³ molecules

4.3× 10²² molecules × 1 mol / 6.022 × 10²³ molecules

0.71× 10⁻¹ mol

0.071 mol

The number 6.022 × 10²³ is called Avogadro number.

"It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance"

3 0
3 years ago
A sample of helium gas has a pressure of 1.20 atm at 22°c. at what celsius temperature will the helium reach a pressure of 2.00
sukhopar [10]
Gay-Lussac's law gives the relationship between pressure and temperature of a gas.
it states that for a fixed amount of gas of constant volume pressure is directly proportional to temperature. 
P/T = k
where P - pressure, T - temperature and k - constant 
\frac{P1}{T1} =  \frac{P2}{T2}
where parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation.
temperature should be in the kelvin scale,
T1 = 22 °C + 273 = 295 K
substituting the values in the equation 
\frac{1.20atm}{295 K}  =  \frac{2.00 atm}{T}
T = 492 K
new temperature - 492 - 273 = 219 °C
5 0
3 years ago
3.01 × 1023 molecules H2O
snow_tiger [21]

Answer:

0.5 mole

Explanation:

The question isn't even clear

But I'm guessing you want to ask the number of moles

n= Number of molecules/ Avogadros number

n= 1/2

7 0
3 years ago
Other questions:
  • Calculate number of grams in 1.15*10^21 molecules of P2O5
    15·1 answer
  • Which is true about the pH values of a 1.0 M solution of HCl (a strong acid) and a 1.0 M solution of HC2H3O2 (a weak acid)?
    6·1 answer
  • Describe the relationship between the light-dependent and the light-independent reactions.
    8·1 answer
  • a brick measures 25cm by 12cm by 13cm. What is the volume of the brick in cm cubed? how many milliliters of water would this bri
    8·1 answer
  • A 0.80 L sample of gas has a temperature of 27°C and a pressure of 0.925 atm. How many moles of gas are present?
    15·1 answer
  • Why is it important to know the major muscle groups in your body? Be specific and detailed as possible with your answer. ​
    5·2 answers
  • PLEASE HELP
    8·1 answer
  • What is a measureing tape used for​
    10·2 answers
  • The density of a sample of gasoline is 0.70 g/cm3. What is the mass of 1 liter of this gasoline?
    11·1 answer
  • Which resource produces the cleanest energy?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!