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Nana76 [90]
2 years ago
15

Use the electron-transfer method to balance this equation:

Chemistry
1 answer:
Klio2033 [76]2 years ago
6 0

Answer:

The answer to your question is the letter d.

Explanation:

Data

                Zn  +  HCl   ⇒  ZnCl₂  +  H₂

- Calculate the Oxidation number of reactants and products

              Zn⁰  +  H⁺¹Cl⁻¹   ⇒  Zn⁺²Cl₂⁻¹  +  H₂⁰

- Determine which elements changed their oxidation numbers

                      Zn⁰     ⇒   Zn⁺²                Zn lost 2e⁻

                     2H⁺¹      ⇒   H₂⁰                H won 2 e⁻

-Interchange the electrons lost and won

                  2( Zn⁰     ⇒   Zn⁺²)

                  2(2H⁺¹      ⇒   H₂⁰)

-Simplify

                  2Zn⁰     ⇒   2Zn⁺²

                  4H⁺¹      ⇒   2H₂⁰

-Substitute the coefficient in the equation

                2Zn  +  4HCl   ⇒  2ZnCl₂  +  2H₂  

             Reactant       Element      Product

                  2                    Zn                2

                  4                     H                 4

                  4                     Cl                 4

- Now the reaction is balanced

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How many moles of lithium chloride will be formed by the reaction of chloride with 4.28 mol of lithium bromide in the following
lys-0071 [83]

Answer:

The answer is 4.28 moles

Explanation:

This is super easy okay, you won't forget this!

Basically mole ratios, we're just looking at the coefficients in front of the compounds, multiplying them, and dividing them as we see fit.

In this example, you can see how you need 2 moles of lithium bromide (LiBr) for the reaction, and 2 moles of lithium chloride (LiCl) will be produced.

Basically, the <u>molar ratio</u> is when you divide numbers and see how much of this do I have for that (if that makes sense).

So if you were to divide the 2 moles of LiBr / 2 moles of LiCl = 1. So we know that the mole ratio for LiBr to LiCl is 1:1 or 2:2, either or, it's the same thing.

SO THE BIG IDEA, if we have 4.28 moles of lithium bromide reacting, we should also have 4.28 moles of lithium chloride produced, BECAUSE the <u>mole ratio</u> is 1:1.

I hope this makes sense please tell me if it doesn't, I will try my best to explain a little more.

7 0
2 years ago
How do ionic bonds affect the properties of ionic compounds?
Deffense [45]

Answer:

The bonds prevent ions from moving throughout the crystal, so a solid ionic compound is a poor conductor.

Explanation:

Ionic bonds are those bonds that form between the ions of molecules. It is formed as a result of electrostatic attraction between the molecules or compounds. The ionic bonds that forms between ionic compounds are responsible for certain properties exhibited by them.

Ionic bonds hold the molecules of ionic compounds so tightly that it prevent ions from moving throughout the crystal, hence, a solid ionic compound is a poor conductor of heat and electricity.

8 0
3 years ago
three disaccharides are important in the human diet: sucrose, lactose, and maltose. click and drag the monosaccharides to build
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The monosaccharides to build each of the disaccharides are:

Glucose + fructose = sucrose

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What are monosaccharides examples?

The simplest carbohydrates, also called simple sugars, are plentiful in fruits. A monosaccharide is a carbohydrate consisting of one sugar unit.

What are the 4 monosaccharides?

Glucose is the most abundant monosaccharide. Galactose, mannose, fructose, and ribose are also of major biological importance.

What are the 3 disaccharides?

Disaccharides consist of two monosaccharide units, linked together with glycosidic bonds in the α or β orientation. The most important of them are sucrose, lactose, and maltose.

What are disaccharides and their functions?

Disaccharides act as an energy source for the body, just like any other carbohydrate. When we eat foods that contain disaccharides, our bodies break them down into simple sugars (monosaccharides) for absorption in the small intestine.

To know more about monosaccharides and disaccharides:

brainly.com/question/731310

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8 0
1 year ago
An ionic compound has a slightly negative heat of solution in water. would you expect it to be soluble or insoluble in water?
Grace [21]
The ionic compound will be soluble in water. 
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3 0
2 years ago
What are the elements in group two called
mina [271]

Answer: Alkaline-earth metal, any of the six chemical elements that comprise Group 2 (IIa) of the periodic table. The elements are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). Hopefully i helped

Explanation:

7 0
2 years ago
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