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ELEN [110]
3 years ago
14

What is the pH of a 0.025 M [OH] solution?

Chemistry
1 answer:
Debora [2.8K]3 years ago
8 0
The answer is 12.4.I think its correct answer.

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When a student chemist transferred the metal to the calorimeter, some water splashed out of the calorimeter. will this technique
Natalka [10]

Answer:

It will be reported too low.

Explanation:

To measure the specific heat of the metal (s), the calorimeter may be used. In it, the metal will exchange heat with the water, and they will reach thermal equilibrium. Because it can be considered an isolated system (there're aren't dissipations) the total amount of heat (lost by metal + gained by water) must be 0.

Qmetal + Qwater = 0

Qmetal = -Qwater

The heat is the mass multiplied by the specific heat multiplied by the temperature change. If c is the specific heat of the water:

m_metal*s*ΔT_metal = - m_water *c*ΔT_water

s = -m_water *c*ΔT_water / m_metal*ΔT_metal

So, if m_water is now less than it was supposed to be, s will be reported too low, because they are directly proportional.

5 0
3 years ago
Daniel is conducting an experiment on magnetic objects. He completes more than one trial. Why is it important for Daniel to do t
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Answer:The conclusion is less accurate.

Explanation:

Feb 17, 2021 — He completes more than one trial. Why is it important for Daniel to do this?

4 0
2 years ago
The following transition occurs at a molecular level for a substance. What transition corresponds to this change in microscopic
olchik [2.2K]

Answer:

D. Freezing

Explanation:

Please mark brainliest and have a great day!

5 0
3 years ago
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(HELP FAST)Which of the following always changes when a substance undergoes a<br> chemical change?
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I’m pretty sure it’s a
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Which compound has the stronger bonds
velikii [3]

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Compound B would have stronger bonds because the reaction needs and absorbs heat to reach the status of the product.

Explanation:

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