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daser333 [38]
3 years ago
6

Equations can be balanced by using the half-reaction method. Which step should be completed first when using this method? insert

ing the coefficients balancing the half reactions identifying the half reactions finding the oxidation states of atoms.
Chemistry
1 answer:
irakobra [83]3 years ago
3 0

The step to be completed first while using the half-reaction is balancing the equation. Thus, option B is correct.

The half-reaction is the oxidation or the reduction reaction of the redox reaction. The oxidation is given as the loss of electrons, and reduction is given as the gain of electrons.

<h3>How do you balance a half-reaction?</h3>

The half-reaction in the cell consists of the change in the electrons and the oxidation state of the elements. The oxidation and reduction reactions are balanced by inserting the equation.

The first step in using the half-reaction is the balancing of reaction. Thus, option B is correct.

Learn more about half-reaction, here:

brainly.com/question/7485080

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What is the molality of a solution containing 3. 0 moles of nacl and 100. 0 moles of water?
Mama L [17]

The molality of a solution containing 3. 0 moles of NaCl and 100. 0 moles of water is 30 mol/kg.

The number of moles of solute in a solution equal to 1 kg or 1000 g of solvent is referred to as its molality. Mole per kilogram of solvent is the SI unit for molality.

Given:

3.0 moles of NaCl in 100 moles of water.

To find:

The molality of the solution

The moles of solute (NaCl) = 3.0 moles

The mass of solvent (water) = 100 moles (0.1 kg/mol)

Molality of a solution = Number of Moles of solute/ Mass of solvent(kg)

                                 = 3.0 moles/0.1 kg/mol

                                 = 30 mol/kg

To know more about Molality refer:

brainly.com/question/20354433

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4 0
2 years ago
Giải phương trình phân tử và phương trình ion rút gọn<br> HCL+NaOH
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Answer:

only japanese and english I understand sorry your languages

Explanation:

so sorry can you brainliest me pls I need Brainliest:)

3 0
3 years ago
Calcium Oxide at mass 14.0g react with water. Determine the mass at which the calcium hydroxide formed. [ Ca=40, O=16, H=1]​
ELEN [110]
Calcium oxide CaO = 40+16 = 56
Calcium hydroxide Ca(OH)_2 = 40+16+16+1+1 = 74

The ratio 56:74 is equal to 14:x with x being the unknown mass.
56/14 = 4
74/4 = 18.5
So the answer is 18.5g assuming the water is in excess
8 0
2 years ago
During a chemical reaction, an iron atom became the ion Fe2+. What happened to the iron atom?
kirill115 [55]

Explanation:

Iron atom is been oxidised as it losses 2 electron to form 2 + ion.

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3 years ago
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