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o-na [289]
3 years ago
9

Need help ASAP!!!!

Chemistry
2 answers:
Advocard [28]3 years ago
8 0

Answer:

D.

Explanation:

Decompostion of stone due to acid rain

n200080 [17]3 years ago
5 0

Answer:

D

Explanation: the rest are either traits or physical changes

D is a chemical reaction

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Chemistry!! Please help asap!! Will mark brainiliest!!
Whitepunk [10]
<h2>Answer:</h2><h3>Part 1. </h3>

Option B is correct option.

The half-reaction 2MnO2 + H2O + 2e- Mn2O3 is missing  OH- ions.

Explanation:

Full equation:

                                          2MnO2 + H2O + 2e-  → Mn2O3 + 2OH-

<h3>Part 2:</h3>

The option B which is Mg is stronger reducing agent than Ag is correct option.

Explanation:

Equation:

                               Mg(s) + 2Ag+ (aq) → Mg2+ (aq) + 2Ag(s)

According to equation Mg converts to Mg+2 which means it gives to electron to reduce Ag. So it act as an reducing agent.

<h3>Part 3:</h3>

The correct option is B. Which is  5, 1, 8, 5, 1, 4.

Explanation:

Full equation :

                  5 Fe²⁺ (aq) + MnO₄⁻ (aq) + 8 H⁺ (aq) --> 5 Fe³⁺ (aq) + Mn²⁺ (aq) + 4 H₂O (l)


<h3 />

5 0
3 years ago
Which of these statements is correct with respect to pH?
Aleksandr [31]
Out of the statements given, the statement that is correct with respect to pH is " the pH of a solution increases gradually with an increasing basicity." The correct answer is C. 
8 0
3 years ago
Read 2 more answers
PLS HELP ASAP NO LINKS PLS<br> How does hydroelectric power operate?<br> oil<br> water<br> coal
Ne4ueva [31]

Answer:

Water

Explanation:

Hydropower plants capture the energy of falling water to generate electricity. A turbine converts the kinetic energy of falling water into mechanical energy. Then a generator converts the mechanical energy from the turbine into electrical energy.

5 0
2 years ago
I neeed help please help
mina [271]

A. Lowering the temperature.

I hope this helped!

7 0
3 years ago
Read 2 more answers
Which of these reactions are redox reactions and why?
IceJOKER [234]
It will be number 1.
NO loses oxygen ie its being reduced to N2
NH3 gains oxygen atom ie its being oxidised to H2O
7 0
3 years ago
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