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anyanavicka [17]
3 years ago
12

What the ph for .05 HBr

Chemistry
1 answer:
PSYCHO15rus [73]3 years ago
3 0
P^h = 1.3

[H^+] = 0.050

pH = -log (0.050)
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A chemist prepares a solution of copper(II) fluoride (CuF2) by measuring out 0.032 µmol of copper(II) fluoride into a 500 mL vol
schepotkina [342]

Answer : The concentration of copper(II) fluoride in the solution is, 6.4\times 10^{-8}mole/L

Explanation : Given,

Moles of copper(II) fluoride = 0.032 μ

mol = 0.032\times 10^{-6}mol=3.2\times 10^{-8}mol

conversion used : \mu mol=10^{-6}mol

Volume of solution = 500 mL

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

\text{Molarity}=\frac{\text{Moles of copper(II) fluoride}\times 1000}{\text{Volume of solution (in mL)}}

Now put all the given values in this formula, we get:

\text{Molarity}=\frac{3.2\times 10^{-8}mol\times 1000}{500mL}=6.4\times 10^{-8}mole/L

Therefore, the concentration of copper(II) fluoride in the solution is, 6.4\times 10^{-8}mole/L

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3 years ago
A parachute on a racing dragster opens and changes the speed of the car from 85 m/s to 45 m/s in a period of 4.5 seconds. What i
astra-53 [7]

Answer:

I think the answer is -8.9 m/s2

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4 years ago
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yKpoI14uk [10]
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What are the physical properties of the cookie/cracker? List 3 or more.
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A gas sample has volume 3.00 dm3 at 101
gavmur [86]

Answer:

V₂ = 21.3 dm³

Explanation:

Given data:

Initial volume of gas = 3.00 dm³

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Final volume = ?

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The given problem will be solved through the Boly's law,

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

101 Kpa × 3.00 dm³ = 14.2 Kpa × V₂

V₂ = 303 Kpa. dm³/  14.2 Kpa

V₂ = 21.3 dm³

Explanation:

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