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
Ilya [14]
3 years ago
13

Someone help me please i’ll give brainly

Chemistry
1 answer:
quester [9]3 years ago
4 0

Answer:

b

Explanation:

i looked it up on Google

You might be interested in
Help me out? thank you.
Vladimir [108]
Wow very difficult I am so confused
3 0
3 years ago
Read 2 more answers
Don't steal points! Which of the following is a tertiary structure?
likoan [24]
Triple helix is the tertiary structure out of those choices
7 0
3 years ago
Tentukan pH Mg(OH)2 jika ke dalam larutan MgCl2 0,2M ditambahkan NH4OH sehingga
Vadim26 [7]

Answer:

pH 8.89

Explanation:

English Translation

If the MgCl₂ solution of 0.2 M has its pH raised by adding NH₄OH, the precipitate will begin to form at a pH of approximately.

Given the solubility product (Ksp) of Mg(OH)₂ = 1.2 x 10⁻¹¹

Assuming all of the salts involved all ionize completely

MgCl₂ ionizes to give Mg²⁺ and Cl⁻

MgCl₂ ⇌ Mg²⁺ + 2Cl⁻

1 mole of MgCl₂ gives 1 moles of Mg²⁺

Since the concentration of Mg²⁺ is the same as that of MgCl₂ = 0.2 M

Mg(OH)₂ is formed from 1 stoichiometric mole of Mg²⁺ and 2 stoichiometric moles of OH⁻

Ksp Mg(OH)₂ = [Mg²⁺][OH⁻]²

(1.2 x 10⁻¹¹) = 0.2 × [OH⁻]²

[OH⁻]² = (6×10⁻¹¹)

[OH⁻] = √(6×10⁻¹¹)

[OH⁻] = 0.000007746 M

p(OH) = - log [OH⁻] = - log (0.000007746)

pOH = 5.11

pH + pOH = 14

pH = 14 - pOH = 14 - 5.11 = 8.89

Hope this Helps!!!

3 0
3 years ago
I need help please WOTH this
barxatty [35]

Answer:

Kenma I'll help you! it's B.

Explanation:

I hope I helped you Kenma

7 0
3 years ago
Select the correct answer.
almond37 [142]

Answer:

D. 5 moles

Explanation:

C3H8 + 5O2 → 4H2O + 3CO2

            5 mol                 3 mol

So, to make 3 mol CO2    5 mol O2 are needed.

3 0
3 years ago
Other questions:
  • How many grams of o2 are consumed to precipitate all of the iron in 55.0 ml of 0.0350 m fe(ii)?
    7·1 answer
  • Give the conjugate base for each compound below.? Acid --- Conjugate Base H2S _________ HPO4^-2 _________ NH4+ _________ Update:
    11·2 answers
  • Use the concept of potential energy to describe how a covalent bond forms between two atoms.
    10·1 answer
  • This molecule can be synthesized from an alkyne anion and an alkyl bromide. However, there are two ways in which this molecule c
    8·1 answer
  • Which of the following is the correct structural formula for ethene?
    13·1 answer
  • Please help with this question!
    5·1 answer
  • Question 10 I need help
    9·1 answer
  • How many of each kind of atom is in one molecule of water? 1 hydrogen atom and 2 oxygen atoms 1 hydrogen atom and 1 oxygen atom
    6·1 answer
  • WDYT a mixture is? Please help
    12·1 answer
  • Please help solve this I’ll award brainliesttt
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!