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pav-90 [236]
3 years ago
13

Calculate the pH of a solution that has [H3O+]=4.3 x 10^-5 M

Chemistry
1 answer:
Neko [114]3 years ago
6 0

Answer:

pH = 4.4

Explanation:

pH = -log[H₃O⁺]

     = -log(4.3 × 10⁻⁵)

pH = 4.37 = 4.4

I'm actually learning this in my chemistry class right now lol. Hope this helps though. :)

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What is the percent by mass of 54.7g of calcium chloride dissolved in 500g of water?
Advocard [28]
% by mass = (mass solute/mass solution)*100%
mass  of the solute = 54.7 g
mass of the solution = mass solute + mass solvent=54.7+500=554.7 g
% by mass = (54.7/554.7)*100%≈0.0986*100% = 9.86%

3 0
4 years ago
Why is one side of the moon called "the dark side of the moon"?
Lisa [10]

Answer:

Option C

Explanation:

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Hope this helps.

4 0
3 years ago
The addition of 15 g of salt to a sample of pure water causes its freezing point to be reduced by 1.3°C. What would be the effec
n200080 [17]

Answer:

option A

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4 0
4 years ago
The mass of ethylene glycol (molar mass 62.1 g / mol), the main component of the antifreeze, must be added to 10.0 L of water to
ser-zykov [4K]
<h2> refer the attachment</h2>

<h2>If it is correct so mark as brainlest answer!</h2>

7 0
2 years ago
Old thermometers contained very small amounts of mercury. The mercury in the photo has a melting point of -38.8 degrees Celsius.
Nikolay [14]

Answer:

••It's melting point equals -38.8 degrees Celsius because it is mercury. |••

Explanation:

This one makes the most sense out of the answers.

7 0
3 years ago
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