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Svetlanka [38]
3 years ago
14

What is the pH of pure water? 2.0 5.0 7.0 12.0

Chemistry
1 answer:
stealth61 [152]3 years ago
7 0
7.0 this is the correct answer
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Bacteria cells are different from plant and animal cells because they don't have what???!
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3 years ago
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What mass would release 2620J of heat when cooled 50 degrees C?
OverLord2011 [107]

the answer is B)12.5

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4 years ago
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How much of nacl is in 1.67 l of 0.400 m<br> nacl?<br> answer in units of mol.
Evgen [1.6K]

Answer:

.668 mole

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2 years ago
HS0, + NaOH
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7 0
3 years ago
Give the measurement following sig fig rules for tools. Do not forget the unit after your number measurement.​
In-s [12.5K]

Answer:

Explanation:

You are not really helped by what is hold the liquid. Beakers and cylinders come on a lot of sizes. I hate to be crabby about things like that, but you really need to be aware that the question is slightly flawed (not your fault).

The beaker, you'd be like to get 1 sig digit. You have to be awfully careful about claiming more. So the and is 50 mL, but that mL is a guess and the 50 is not totally accurate, but what would you say the second digit is? 48 or 47? You don't really know. Maybe even 49.

The graduated cylinder is a little better. Read the bottom of the meniscus (the bottom of the 1/2 bubble). I think you can get 2 sig digs., so the answer is 36 mL. But everything also depends on what you have been told.

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3 years ago
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