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
Oksana_A [137]
3 years ago
15

Find the hydroxide ion concentration of a HBr solution with a pH of 4.75

Chemistry
1 answer:
Sunny_sXe [5.5K]3 years ago
8 0
1st find the pOH = 14 - 4.75 = 9.25
then do 10^-9.25 = 5.62x10^-10 OH- concentration
You might be interested in
Which identifies an oxidation-reduction reaction? a double replacement reaction a neutralization reaction a reaction in which ox
OLga [1]

A reaction in which oxidation numbers change is the answer! :D

☆ Dont forget to mark brainliest ☆

7 0
3 years ago
Read 2 more answers
How many liters are there in 28g of B?
Juliette [100K]
Hi
The volume is 58.1
The moler mass is 10.8
Molar mass details
10.81B (1*10.81)

Hope this helps
5 0
2 years ago
Explain why fluorine has a smaller atomic radius than both oxygen and chlorine
Alex777 [14]

Answer:

1) Has a smaller radius than oxygen because of the increased electromagnetic attraction of the nuclei

2) Has a smaller radius than chlorine because all the electrons of F have lower energy levels and have less repulsion of other electrons and hence are more attracted to the nuclei .

Explanation:

Further the electrons are from the nuclei , the bigger the atomic radius is.

(+) attraction of electrons to the nuclei, (-) repulsion of the electrons away from the nuclei.

1) From O to F:

(+) there is one more proton --> Stronger positive charge of the nuclei means that the electrons are attracted more , then they come closer to it and therefore the radius decreases

(-) There is one more electron --> Every electron is repulsed by others away from the nuclei --> the radius increases. But this effect is not so strong because the new electron is added at the same energy level.

Overall the (+) effect is stronger than the (-) effect --> Radius decreases from O to F

2) From F to Cl

(+) there is one more protons --> Same effect as before

(-) There is one more electron --> Every electron is repulsed by others away from the nuclei. But this time the new electrons have a higher energy level --> Meaning that they are less attracted and hence the radius increases.

And also the other inner layers of electrons (electrons of lower energy levels) repulse this new external layer of electrons more effectively than the case of O  --> Strong repulsion effect (called electron shielding effect) --> Radius increases

Overall the (-) effect is stronger than the (+) effect --> Radius increases from F to Cl  (or decreases from Cl to F)

5 0
3 years ago
How many electron shells/orbitals does the element Krypton (Kr) have?
dlinn [17]

Answer:

Krypton has 4 orbital shells

<u>Extra Information:</u>

<em>Krypton has 36 electrons which are arranged in these 4 orbit shells, </em>

<em>The order in which electrons are arranged in these shells is 2,8,18,8</em>

4 0
3 years ago
When Silver (Ag) forms a metallic bond with other Silver atoms, what do the valence electrons move into? A. the all go to the sa
Korolek [52]

Answer:

D. the sea of electrons

Explanation:

Metallic bonds are defined as the bonds formed between two or more metals. Silver atom form metallic bond with other silver atoms.

In metallic bond, the free electrons or valence electrons present in s and p orbitals delocalize. The valence electrons do not move around the atoms or enter the atoms whereas they form a sea of electrons in which they surround the nuclei (positively charged) of the metal ions interacting. The valence electrons are then freely move in the space between the atomic nuclei.

Hence, the correct answer is "D. the sea of electrons".

7 0
3 years ago
Other questions:
  • Calculate the pH at the equivalence point for the titration of 0.110 M methylamine (CH3NH2) with 0.110 M HCl. The Kb of methylam
    8·1 answer
  • Calculate the atomic mass of silicon. The three silicon isotopes have atomic masses and relative abundances of 27.9769 amu (92.2
    6·1 answer
  • You live on earth. What is earth place in the universe
    11·1 answer
  • How much calcium hypochlorite (65% strength) is needed to make 200 L of 2% hypochlorite solution? (Assume that a 1% solution is
    15·1 answer
  • How many element are there on the periodic table?
    11·2 answers
  • (Math) I NEED THIS ANSWER PLZ
    7·1 answer
  • How many atoms are in a 0.50 g sample of helium
    11·1 answer
  • Please help I will mark brainliest if you answer first let's see who gets brainliest
    7·2 answers
  • NEED A AWNSER ASAP PLEASE!!!!
    14·2 answers
  • - How many grams of nitrogen (N2) are needed to react with 435.2 g of oxygen (02) in the following equation?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!