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GarryVolchara [31]
3 years ago
12

A solution has [oh−] = 4.0×10−8. what is the value of [h+] for the solution? answers

Chemistry
2 answers:
grandymaker [24]3 years ago
8 0

<u>Answer:</u> The pH of the solution is 6.68

<u>Explanation:</u>

To calculate the pOH of the solution, we use the equation:

pOH=-\log[OH^-]

We are given:

[OH^-]=4.8\times ^{-8}M

Putting values in above equation, we get:

pOH=-\log (4.8\times 10^{-8})\\\\pOH=7.32

Calculating the pH of the solution:

pH+pOH=14\\\\pH=14-7.32=6.68

Hence, the pH of the solution is 6.68

Lelu [443]3 years ago
5 0
Answer is: the hydrogen ion concentration is 2.5·10⁻⁷ M.<span>
[OH</span>⁻] = 4·10⁻⁸<span> mol/L, equilibrium concentration of hydroxide anion.
[H</span>⁺] is the equilibrium concentration<span> of hydrogen ions.
[OH</span>⁻] · [H⁺] = 10⁻¹⁴ mol²/L², ionicproduct of water on room temperature.<span>
[H</span>⁺] = 10⁻¹⁴ mol²/L² ÷  4·10⁻⁸ mol/L.<span>
[H</span>⁺] = 2,5·10⁻⁷ mol/L = 0,00000025 mol/L.
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Atoms of two different elements react with each other when they have?
kipiarov [429]

All other elements react with other elements to form compounds. In the special case where the reaction produces fixed numbers of the same types of atoms in exactly the same configuration, we say the elements have formed a molecule.

7 0
2 years ago
___ Au₂S₃ + ___ H₂ → ___ Au + ___ H₂S
Natalija [7]

Answer:

2Au₂S₃ +  6H₂ → 4Au + 6H₂S

Explanation:

Balancing:

2Au₂S₃ +  6H₂ → 4Au + 6H₂S

6 0
2 years ago
5. What is the partial pressure of the remaining gas, if the total is 384 torr 2
alexgriva [62]

Answer: 83.11 torr

Explanation:

According to Dalton's Law of partial pressure, the total pressure of a mixture of gases is the sum of the pressure of each individual gas.

i.e Ptotal = P1 + P2 + P3 + .......

In this case,

Ptotal = 384 torr

P1 = 289 torr

P2 = 11.89 torr

P3 = ? (let the partial pressure of the remaining gas be Z)

Ptotal = P1 + P2 + Z

384 torr = 289 torr + 11.89 torr + Z

384 torr = 300.89 torr + Z

Z = 384 torr - 300.89 torr

Z = 83.11 torr

Thus, the partial pressure of the remaining gas is 83.11 torr.

5 0
3 years ago
. How many ethyl groups are in the molecule 3, 3-diethylpentane?
Mamont248 [21]

Answer:

2 groups

Explanation:

The molecule 3, 3-diethylpentane has 2 ethyl groups because the prefix di- means that there are 2 homogeneous substituent groups present in the molecule.

6 0
2 years ago
Nitric monoxide (NO) reacts with oxygen gas to form nitrogen dioxide (NO₂), a dark brown gas. If 5.895 mol of NO is mixed with 2
Schach [20]

Answer:

Limiting reactant: O2

grams NO2 produced = 230.276 g NO2

grams of NO unused = 26.67 gNO

Explanation:

2NO + O2 --> 2NO2

Step 1: Determine the molar ratio NO:O2

molar ratio NO:O2 = 5.895: 2.503 = 2.35

stoichiometric molar ratio NO:O2 = 2:1

So, O2 is the limiting reactant.

Step2: Determine the grams of NO2:

?g NO2 = moles O2 x (2moles NO2/1 mol O2) x (MM NO2/ 1 mol NO2) = 2.503 x 2 x 46 = 230.276 g NO2

Step 3: Determine the amount of excess reagent unreacted

moles excess NO reacted = moles O2 x (2 moles NO/1 mol O2) = 2.503 x 2 = 5.006 moles NO reacted

moles NO unreacted = total moles NO - moles NO reacted = 5.895-5.006 =0.889 moles NO unreacted

mass NO unreacted = moles NO unreacted x MM NO = 0.889 x 30 =26.67 g NO unreacted

8 0
2 years ago
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