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
Irina-Kira [14]
3 years ago
14

I need help with balancing equations I'm doing homework and idk what to do here can you give me the answers please lol

Chemistry
1 answer:
amm18123 years ago
3 0

It's pretty easy to balance equations! Basically you want to make sure that the number of each compound is equal on both sides of the arrow.

For example number one is

Fe + H2SO4 -> Fe2(SO4)3 + H2

A 3 in front of H2SO4 because there's a subscript of 3 on the right side.

Then a 3 in front of H2 because of the previous step.

Then add a 2 in front of Fe because of the 2 subscript in Fe2(SO4)3

Then add a 1 in front of Fe2(SO4)3 because you already have an equal number of each element.

<u>2</u>Fe + <u>3</u>H2SO4 -> <u>1</u>Fe2(SO4)3 + <u>3</u>H2

I hope this explanation helps! You should really do your homework because practice is everything when it comes to chemistry. You'll need to know how to do it for exams.  

You might be interested in
In a popular song from 1970, the musical group Crosby, Stills, and Nash use the line, "We are stardust." Why is this statement t
Morgarella [4.7K]
<span>It is true because Earth was formed by a heart of a star, which is the same as stardust.
</span>
7 0
3 years ago
Read 2 more answers
Which of the following chemical equations is balanced?
xxTIMURxx [149]

Answer:

a.

Explanation:

a.hwywhefddregdudre

4 0
3 years ago
Read 2 more answers
How many water molecules are thrre in this equation CH4 + 2O2 = 2H2O + ÇO2
Usimov [2.4K]

i am pretty sure it is 4

8 0
3 years ago
Here is the discharge reaction for an alkaline battery: zn(s) + 2mno2(s) + h2o(l)\longrightarrow⟶⟶zn(oh)2(s) + mn2o3(s) which sp
ollegr [7]
The reaction is 
Zn(s) + 2MnO₂(s) + H₂O(l) ⟶ Zn(OH)₂(s) + Mn₂O₃(s)

The reactants are Zn(s) and MnO₂(s) while Zn(OH)₂(s) and Mn₂O₃(s) products.

Let's see the oxidation state of each compound.
sum of the o.s. of the each element of compound = charge of the compound

O.s of O = -2
O.s of OH⁻ = -1

O.s of Zn(s) = 0

O.s of Mn in MnO₂(s) = x
         x + (-2) * 2 = 0
             x            = +4


O.s of Zn in Zn(OH)₂(s) = a
          a + (-1) * 2 = 0
                 a         = +2

O.s of Mn in Mn₂O₃(s) = b
          2*b + (-2) * 3 = b
                         2b   = 6
                           b   = +3
Since the O.s is reduced in Mn from +4 to +3, the reduced species is Mn₂O₃(s).

8 0
3 years ago
Read 2 more answers
What is the pH of a solution with [H ] = 1.25´10–10?
nevsk [136]
The relationship between H+ ion concentration and pH is pH=-lg[H+]. So the pH of the solution is -lg(1.25*10^-10) = 9.9.
8 0
3 years ago
Read 2 more answers
Other questions:
  • The molar heats of fusion and vaporization of argon are 1.3 kJ/mol and 6.3 kJ/mol respectively, and argon's melting point and bo
    5·1 answer
  • 20 points
    9·1 answer
  • Which is one feature of the ocean floor found in the open ocean?
    11·2 answers
  • Explain how plastic can be both beneficial and detrimental at the same time.
    8·1 answer
  • Marvelous rides his bike with a constant speed of 6 miles per hour east. How long will he take to travel 21
    8·1 answer
  • Aluminum:
    10·1 answer
  • What is the name of CaCl2 7H2o
    11·1 answer
  • A 25.0 mL sample of 0.100 M pyridine (Kb for pyridine is 1.7 ✕ 10-9) is titrated with 0.100 M HCl solution. Calculate the pH aft
    6·1 answer
  • There are four springs stretched by the same mass. Spring A stretches 25 cm. Spring B stretches 10 cm. Spring C stretches 100 cm
    7·1 answer
  • A student collecting CaCO3 produced by the reaction of Na2CO3(aq) and CaCl2(aq) obtains a percent yield of 81%. Choose all of th
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!