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
abruzzese [7]
3 years ago
11

What do the parentheses mean in a chemical reaction and how they are used

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

Parantheses mean present of a subgroup or a group of polyatomic ions in a chemical reaction.

<u>Explanation:</u>

In a chemical reaction, sometimes, a compound may be composed of group of polyatomic ions with other ions. Some of the polyatomic ions are sulfate, carbonate, nitrate, hydroxide, bicarbonate, ammonia etc.

So these polyatomic ions are formed by combining two or more elements. Thus, if the number of polyatomic ions in a compound is more than one, then we use parathesis and write those polyatomic ions in it and write the number of polyatomic ions present in the compound as subscript of the parathesis.

For example, Fe₂(SO₄)₃

So here SO₄ is a polyatomic ion and in the compound 3 atoms of SO₄ is required to neutralize the compound and thus paranthesis is used. Thus, parantheses mean present of a subgroup or a group of polyatomic ions in a chemical reaction.

You might be interested in
Please help me thanks:)
lianna [129]

Answer:

where it goes

Explanation:

3 0
2 years ago
Read 2 more answers
Which of the following is an example of a homogeneous mixture?
elena-s [515]

A. Apple juice is an example of a homogeneous mixture.

7 0
3 years ago
Calculate the average reaction rate expressed in moles h2 consumed per liter per second
djyliett [7]

Answer:

Average rate of reaction expressed in moles H₂ consumed per liter per second = 0.0025 M/s = 0.0025 mol/L.s

Explanation:

The complete, correct Question, is presented in the attached image to this answer.

The average rate of reaction in terms of the reactant is defined as the total amount of reactant consumed over a period of time divided by total period of time.

Mathematically,

Average rate of reaction = (change in concentration of H₂ over a period of time) ÷ (total period of time)

Average rate of reaction = (-ΔC)/(Δt)

The minus sign is there because the concentration of reactants reduce with time.

change in concentration of H₂ = -ΔC

= -(0.02 - 0.03) = 0.01 M

Time = Δt = 4 - 0 = 4.0 s

Average rate of reaction = (0.01/4) = 0.0025 M/s

We could solve for the average rate of reaction expressed in moles Cl₂ consumed per liter per second

change in concentration of Cl₂ = -ΔC

= -(0.04 - 0.05) = 0.01 M

Time = Δt = 4 - 0 = 4.0 s

Average rate of reaction = (0.01/4) = 0.0025 M/s = 0.0025 mol/L.s

Hope this Helps!!!

8 0
3 years ago
The bonds in the compound MgSO4 can be described asA. ionic, onlyB. covalent, onlyC. both ionic and covalentD. neither ionic nor
Galina-37 [17]
I believe the answer is C. The bonds in the compound magnesium sulfate is ionic and covalent. Magnesium sulfate is soluble in water. When the said compound is dissolved in water, it dissociates into magnesium ions and sulfate ions. However, the bonds that held together the sulfate ions is covalent.
6 0
3 years ago
Sierra did 500 J of work to move her couch. If she exerts 250 N of force on the couch, How fat did she move it? (Work: W = Fd
Elodia [21]
W=F*d

W= 500 J
F = 250 N

500 J = 250 N * d
d= 500J/250 N = 2 J/N = 2(N*m)/N = 2 m
Answer is 2 m.
7 0
3 years ago
Other questions:
  • A positively charged ion is called a cation which means there are more protons in the atom compared to the number of protons in
    14·1 answer
  • A substance that increases the concentration of hydroxide ions in aqueous solution.
    15·1 answer
  • A population of rabbits is separated by a mountain range. Which of the following is most likely to occur?
    10·2 answers
  • A 6.40 g sample of solid KCl was dissolved in 42.0 g of water. The initial temperature of the water was 20.60°C. After the compo
    6·1 answer
  • Given the following equation: Cu + 2 AgNO3 ---&gt; Cu(NO3)2 + 2 Ag If 89.5 grams of Ag were produced, how many grams of Cu react
    6·1 answer
  • Notes:
    14·1 answer
  • Describe the attraction between 2 atoms as a result of sharing electrons
    14·1 answer
  • when the sum 4.9965 + 2.11 + 3.887 is calculated, to how many decimal places should the answer be reported?
    9·1 answer
  • Where is the epicenter of this hypothetical earthquake?
    14·1 answer
  • How do I know which substance is being reduced? ​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!