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umka2103 [35]
2 years ago
13

Please if anyone know this question, tell me its answer. I will be very thankful to you​

Chemistry
1 answer:
Verizon [17]2 years ago
5 0
Ch-c§c will get the answer
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Write the equilibrium constant expression, Kc, for the following reaction: If either the numerator or denominator is 1, please e
yanalaym [24]

Answer:

Explanation:

THE QUESTION SHOULD BE

Write the equilibrium constant expression, Kc, for the following reaction: If either the numerator or denominator is 1, please enter 1 CaCO3(s).

CaCO3(s) <=> Ca2+(aq) + CO32-(aq)

Write the mathematical form of the concentration of the products, then divide it by the concentration of the reactants as follows

Kc =[Ca2+]^1 . [CO32-]^1 / [CaCO3]^1

5 0
3 years ago
2Ni(OH) → Ni2O + H2O <br> How many moles of water forms from 4.20 mol of nickel (I) hydroxide?
butalik [34]

Answer:

2.1 moles of water formed.

Explanation:

Given data:

Moles of water formed = ?

Moles of Ni(OH) = 4.20 mol

Solution:

Chemical equation:

2Ni(OH)    →  Ni₂O + H₂O

Now we will compare the moles of Ni(OH)  with water.

             Ni(OH)           :            H₂O

                2                 :              1

              4.20             :            1/2×4.20 = 2.1 mol

2.1 moles of water formed.

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2 years ago
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Because it doesn't get direct sunlight so it gets cool
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An electric wire produces a magnetic field. <br><br><br> True or false? (GIVE PROOF)
kupik [55]

Answer:

True

Explanation:

A magnetic field is made when an electric current flows through a wire.

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A simple machine produces 25 joules of output work for every 50 joules of input work . What is the efficiency of this machine ?
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