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Lilit [14]
3 years ago
5

What does pressure measure

Chemistry
1 answer:
Romashka [77]3 years ago
8 0

Answer:

pressure :)

Explanation:

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Radioactivity another name for radioactive decay. Radioactivity refers to particles emitted from nuclei as a result of nuclear instability. 
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Explain what happens to the particles in a substance during a physical change. plllzzzzz hurry!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Reptile [31]

Answer:

When a physical change occurs, the arrangement of particles within the substance may change, but the atoms in the molecules remain bonded together.

Explanation:

Srry didn't see this till now, hope u got it right :)

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Can someone help me plz. I will mark them Brainliest.
Sveta_85 [38]
See photo for answer

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2 years ago
Briefly describe how a potentiometric pHmeter works. (Hint: Describe how the pH meter
cupoosta [38]

Answer:

A potentiometric pH meter is used to measure the pH of a solution.

Explanation:

A pH meter is an common instrument that is used to measure the hydrogen-ion concentration in aqueous solutions , the meter indicates its acidity or alkalinity and is expressed as pH.

The pH meter measures the difference in electrical potential between a pH electrode and a reference electrode, hence the pH meter is often called a potentiometric pH meter. The difference in electrical potential is related to the pH of the solution.

Potentiometric pH meters consists of a simple electronic amplifier and a pair of electrodes, alternatively it may consist of a combination electrode, and some form of display calibrated in pH units. It usually has a glass electrode and a reference electrode, or a combination electrode. The electrodes, or probes, are inserted into the solution to be tested and pH values are read off.

5 0
3 years ago
A metal ball of mass 100 g is heated to 90°C and then cooled to 25°C. The heat lost in the process is 2.5 kJ. Another metal ball
Harrizon [31]

Answer:

A. The balls are made of the same material

7 0
3 years ago
Read 2 more answers
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