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
Aleks [24]
3 years ago
14

Need help fast!!

Chemistry
1 answer:
stepan [7]3 years ago
8 0

Answer:

The answer is "5.18 ".

Explanation:

It's a question of chemistry. Therefore, the following solution is provided:

We will first determine the solution's pOH. The following can possible:

The concentration of Hydroxide ion [OH^{-}] = 1.5\times 10^{-9}\ M

pOH =?\\\\pOH = -\log [OH^{-}]\\\\pOH = -\log 1.5\times 10^{-9}\\\\pOH = 8.82\\\\

Furthermore, the pH of the solution shall be established. It was provided as follows:

pOH = 8.82\\\\pH =?\\\\pH + pOH = 14\\\\pH + 8.82 = 14\\\\

When collecting all the like terms:

pH = 14 -8.82\\\\pH = 5.18

Therefore, the solution of pH is 5.18.

You might be interested in
Consider the following precipitation reaction: Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq). Which ions are spectator ions? pls
Marta_Voda [28]

Potassium and Nitrate ions are spectator ions in the reaction:

Pb(NO_3)_2(aq) + 2KI(aq) → PbI_2(s) + 2KNO_3(aq).

<h3>What are spectator ions?</h3>

Ions that are not involved in the actual chemical reaction are called spectator ions.

A precipitation reaction occurs when two ionic compounds react to produce a precipitate and an insoluble substance which stays in the solution as a spectator ion.

Hence, Potassium and Nitrate ions are spectator ions in the reaction:

Pb(NO_3)_2(aq) + 2KI(aq) → PbI_2(s) + 2KNO_3(aq).

Learn more about the spectator ions here:

brainly.com/question/14050476

#SPJ1

6 0
2 years ago
Explain why the electron configuration of 2-3-1 represents an atom in an excited state?
baherus [9]

Answer:

See explanation

Explanation:

If we look at the electron configuration closely, we will discover that the element must have had a ground state electron configuration of 2,4.

This is because, the innermost shell usually holds two electrons while the outer shells hold eight electrons each. The four electrons must be accommodated in the second shell in the ground state configuration of the compound.

However, when the atom is excited, one electron from this shell may move to the third shell to give the excited state configuration 2-3-1 as shown in the question.

6 0
3 years ago
Which is the correct order largest to smallest
expeople1 [14]

Answer:

how am i suppose to put it in largest to smallest if u didnt give any numbers

6 0
3 years ago
Integrated Problem 21.104 Get help answering Molecular Drawing questions Get help answering Molecular Drawing questions. When a
Zepler [3.9K]

Answer:

See explanation below

Explanation:

The malonic ester synthesis is a commonly used reaction to form several products. In this case when we have an excess of base, in presence of an alkyl halide of 4 carbons, this will promoves the formation of a ring.

This synthesis has 4 steps:

1) Enolate formation. In this step the strong base (Such as methoxyde) will substracts the more acidic atom of hydrogen in the molecule. In the malonic ester, it would be the hydrogens from carbon 2.

2) Enolate alkylation. Once the enolate has been formed in the previous step, it will become a nucleophyle, and will attack the alkyl halide to form an enolate alkyl. Then, as we have excess of base, we are going back to step 1 to substract the remaining hydrogen, and then, step 2 again so the remaining bromine leaves the molecule. In this part, it will form the ring.

3) Ester hydrolisis. When the ring is formed, it's time to do an hydrolisis of the ester, so we can convert the ester into carboxilic acids. As we have two ester,we will have two carboxilic acids.

4) Decarboxilation. Finally, a decarboxilation occurs in presence of heat to have the final product with a ring and CO2 there as final products.

See picture attached for products thislllll

3 0
3 years ago
Please Be Honest<br><br> Rate 1-10
san4es73 [151]
Also give you a 10, the last one looks really nice
5 0
3 years ago
Other questions:
  • One way to limit iron corrosion is to coat the iron with a metal that:
    15·2 answers
  • The Chandrasekhar limit states that the final mass of a _____ star can be no greater than 1.4 solar masses.
    8·2 answers
  • What is the difference between a theory and an observation
    10·1 answer
  • NEED HELP ASAP!!!!!!
    5·1 answer
  • How do you identify unknown chemicals.
    5·1 answer
  • What is the sun made of
    6·2 answers
  • What is a metalloid?
    12·1 answer
  • Use your knowledge of carbon-14 dating to determine which two statements are true. (remember that the half-life of carbon-14 is
    11·1 answer
  • Which statement correctly describes gravity? Group of answer choices an attractive force that acts between all objects without c
    7·2 answers
  • In an experiment to determine the effect of different brands of fertilizer on the rate of plant growth, what are 4 variables tha
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!