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hichkok12 [17]
3 years ago
7

Why are the atoms of the group 8 elements unreactive??​

Chemistry
1 answer:
anygoal [31]3 years ago
3 0

Answer:

because that is the last group the ones before it are more reactive im sorry if this not what you were looking for.

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An acid solution is 0.100 M in HCl and 0.210 M in H2SO4. What volume of a 0.150 M solution of KOH must be added to 500.0 mL of t
Dmitry_Shevchenko [17]

Answer:

When we add 0.33L of KOH only the HCl solution will be neutralized. When we add <u>1.4 L</u> of KOH, all of the acid (the HCl and H2SO4 solution) will be neutralized.

Explanation:

<u>Step 1:</u> Data given

The solution has 0.100 M HCl and 0.210 M H2SO4

Molarity KOH = 0.150 M

Volume of acid solution = 500 mL = 0.5 L

<u>Step 2: </u>Calculate moles of HCl

Moles HCl = Molarity HCl * volume

Moles HCl = 0.100 M * 0.5 L

Moles HCl = 0.05 moles

<u>Step 3:</u> Calculate moles of H2SO4

Moles H2SO4 = 0.210 M * 0.5 L

Moles H2SO4 = 0.105 moles

<u>Step 4:</u> The balanced neutralization reaction of KOH with HCl can be written as:

KOH + HCl → KCl + H2O

The mole ratio is 1:1

This means to neutralize 0.05 moles HCl, we need 0.05 moles KOH

<u>Step 5:</u> The balanced neutralization reaction of KOH with H2SO4 can be written as:

2KOH + H2SO4 → K2SO4 + 2H2O

The mole ratio KOH: H2SO4 is 2:1

This means to neutralize 0.105 moles H2SO4 we need 0.210 moles KOH

<u>Step 6: </u>Calculate volume of KOH needed to neutralize the solution

To neutralize the HCl solution: 0.05 moles / 0.150 M = 0.33 L KOH needed

To neutralize the H2SO4 solution: 0.210 moles / 0.150 M = 1.4 L KOH needed

When we add 0.33L of KOH the HCl solution will be neutralized. When we add 1.4 L of KOH the HCl and H2SO4 solution will be neutralized.

4 0
2 years ago
In a chemical equation, the sum of the masses of the products is equal to the sum of the masses of the reactants. True False
Komok [63]
The answer is true e e e e e  e e e e e
8 0
3 years ago
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cricket20 [7]

Answer:

Tea is a solution of compounds in water, so it is not chemically pure.

Explanation:

It is usually separated from tea leaves by filtration. B Because the composition of the solution is uniform throughout, it is a homogeneous mixture.

4 0
2 years ago
Where is the sun shining most directly when we are having summer in the Northern Hemisphere?
NNADVOKAT [17]
The sun will always hit the equator the most no matter the season because of Earths tilt. Which means the Northern tip of South America near Brazil and Colombia will get the most sun.<span />
8 0
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5. How much force is required to accelerate a 12kg mass at 5m/s??
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Answer:

Force = Mass x Acceleration

12 x 5 = 60

60 Newton’s is your final answer

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3 years ago
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