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Solnce55 [7]
3 years ago
7

Given the reaction: __hg2+ + __ag0 → __hg0 + __ag1+when the equation is completely balanced using the smallest whole-number coef

ficients, the coefficient of hg will be
Chemistry
1 answer:
Tju [1.3M]3 years ago
4 0
Answer is: <span>the coefficient of Hg will be 1.

Balanced chemical reaction: H</span>g²⁺ + 2Ag⁰ → Hg⁰ + 2Ag⁺.
Oxidation half reaction: Ag⁰ → Ag⁺ + e⁻/×2; 2Ag⁰ → 2Ag⁺ + 2e⁻
Reduction half reaction: Hg²⁺ + 2e⁻ → Hg⁰.
Mercury cation gain two electrons and become mercury metal with neutral charge (reduction), silver lost electrons and become silver cation (oxidation).
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If 5. 0 grams of kcl is dissolved in 500 ml of water, what is the concentration of the resulting solution?
Lady_Fox [76]

If 5.0 grams of KCl is dissolved in 500 ml of water, the concentration of the resulting solution will be 0.134M.

<h3>How to calculate concentration?</h3>

The concentration of a solution can be calculated by using the following formula;

Molarity = no of moles ÷ volume

According to this question, 5.0 grams of KCl is dissolved in 500 ml of water. The concentration is calculated as follows:

no of moles of KCl = 5g ÷ 74.5g/mol = 0.067mol

Molarity = 0.067mol ÷ 0.5L = 0.134M

Therefore, if 5.0 grams of KCl is dissolved in 500 ml of water, the concentration of the resulting solution will be 0.134M.

Learn more about concentration at: brainly.com/question/10725862

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6 0
2 years ago
How many moles of hcl are required to neutralize aqueous solutions of these bases? 0.03 mol koh?
oksano4ka [1.4K]
 The  moles  of  HCl    are  required  to  neutralized    aqueous     solution     of  the   0.03  KoH

KOH  +  HCl  =  KCl  +   H2O


by   use  mole  ratio  between  KOH   to   HCl    which  is    1:1    the  moles    Of  HCl  is  also      0.03  moles
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3 years ago
When looking at flat-tailed horned lizards, what trait was found in most living lizards compared to dead lizards? *
UkoKoshka [18]

Answer:

d after any reptile that is poisinis when it dies the amount of poisin becoms weaker becuase its rrying to kill air but it kill nothing

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What is the density of a 10 kg mass that occupies 5 liters?<br> ( pls need help)
bulgar [2K]

Answer: d=2000 g/L

Explanation:

Density is mass/volume. The units are g/L. Since we are given mass and volume, we can divide them to find density. First, we need to convert kg to g.

10kg*\frac{1000g}{1kg} =10000 g

Now that we have grams, we can divide to get density.

d=\frac{10000g}{5 L}

d=2000g/L

7 0
3 years ago
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