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
MaRussiya [10]
3 years ago
11

The concentration of 1130+ in a solution is found to be 1.75 X 10-8 M 250C. Find [OH].

Chemistry
1 answer:
const2013 [10]3 years ago
5 0

Answer:

[OH] = 6.31 * 10^-7 M

Explanation:

Mathematically;

pH + pOH = 14

Mathematically;

pH = -log [H3O+]

also;

pOH = -log [OH]

From the question; [H3O+] = 1.75 * 10^-8 M

pH = -log [1.75 * 10^-8]

pH = 7.76

since pH is normally given to 1 decimal place

we can say pH = 7.8

Now;

pH + pOH = 14

pOH = 14-7.8

pOH = 6.2

now pOH = -log [OH]

[OH] = -antilog 6.2

[OH] = 6.31 * 10^-7 M

You might be interested in
Speed.
Alexus [3.1K]
Increases with

hope this helped :))
correct me if i’m wrong
5 0
2 years ago
B) Ethane has the formula C2H6. In terms of electronic structure,
k0ka [10]

Answer:

There is one single covalent bond between two carbon atoms.

Explanation:

We know that sharing of electrons form covalent bonds.

If we look upon K,L,M ,N shells of the carbon and hydrogen atoms.

We found that Hydrogen is having only  1 electron in K shell.

And Carbon on the other hand is having 2 electrons in K shell and 4 electrons in L shell.

So carbon have  4 valence electrons,and it can share 4 bonds with any relevant atom to complete its octet.

And Hydrogen requires  1 electron to complete its doublet.

Alkane general formula C_{n}H_{2n+2}

For ethane n=2

C_{2}H_{4+2} = C_{2}H_{6}

1 Carbon atom is shared by  3 Hydrogen.

The remaining one electron (4-3)=1 of carbon will be shared with another carbon atom.

An image of the sharing of electrons attached below,

Hence we have only  1 covalent bond between the two.

5 0
3 years ago
The combustion method used to analyze for carbon and hydrogen can be adapted to give percentage N by collecting the nitrogen fro
12345 [234]

Answer:

The percentage of N in the compound is 0.5088

Explanation:

Mass of compound = 8.75 mg = 8.75×1000 = 8750 g

Mass of N2 = number of moles of N2 × MW of N2 = 1.59 × 28 = 44.52 g

% of N in the compound = (mass of N2/mass of compound) × 100 = (44.52/8750) × 100 = 5.088×10^-3 × 100 = 0.5088

6 0
3 years ago
Which of the following diagrams represents a single<br> replacement reaction?
kari74 [83]

Answer:

It's a, trust me I'm very good with chemistry

3 0
1 year ago
Carbon has a neutral overall charge, an atomic mass of about 12 and an atomic number of 6. How many electrons does carbon have?
Artist 52 [7]
For the atom to be neutral, it must have the same number of electrons and protons. The aromic number indicates the number of protons. Since Carbon has 6 protons, it would have to have 6 electrons for it to be neutral
4 0
3 years ago
Read 2 more answers
Other questions:
  • A 50 g sample of an unknown metal is heated to 90.0C. It is placed in a perfectly insulated container along with 100 g of water
    9·2 answers
  • a water heater contains 58 Gal of water. How many kilowatt-hours of energy are necessary to heat the water in the water heater b
    14·1 answer
  • The ___________________ in the mouth secrete enzymes which help prepare the food for digestion in the stomach.
    8·2 answers
  • When determining an elements identify, what is the most important subatomic part to look at?
    12·1 answer
  • Which term is used when sugar is dissolved in water?a: covalentb: homogeneousc: amphibigeneousd: heterogeneous
    6·1 answer
  • 14. If ExGxP=Hx) solve for A<br> A<br> В
    8·1 answer
  • Which is responsible for the high thermal energy required to melt ice? (1 point)?
    5·1 answer
  • In an ionic bond, what do the electrons do in order to form the bond?
    9·1 answer
  • What amount of ice must be added to 250 g of water at 15°c to cool the water to 0°c and have no ice left
    5·1 answer
  • a gas has a volume of 2.00 at 323k and 3.00 ATM What would be the new volume if the temperature is changed to 273 K in the press
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!