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nikdorinn [45]
3 years ago
5

( please help !!!! )

Chemistry
1 answer:
Yanka [14]3 years ago
8 0

It avoids confusion through scientists. If you think, they could be practicing or studying in varying countries and something uniform for science avoids all confusion!

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Please help i’ll mark brainliest
Lynna [10]

Answer:

Physical change

Explanation:

Chemical change is defined as the process in which new substance with different properties is formed from old substance and the process is irreversible while physical change is a reversible process and changes only physical properties of a substance.

<em>The given experiment is an example of physical change because it is just the physical act of dissolving. The metal disk is dissolving in sodium acetate and the process is exothermic and the process is reversible as well.</em>

Hence, the correct answer is "physical change".

3 0
3 years ago
an unknown volume of gas has a pressure of 0.50 atm and temperature of 325k. if the pressure is raised to 1.2atm and the tempera
postnew [5]
117 L. You can start by making a table to organize the information you are given. Then, you can use the formula PV/T=PV/T and plug in the numbers you have. You then solve for the missing volume. Remember that the initial pressure, temperature, and volume should be on one side of the equal sign, and the final pressure, volume, and temperature should be on the other side.

6 0
3 years ago
Classify this statement as always true, AT; sometimes true, ST; or never true, NT. To obtain a value for the number of moles usi
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AT, STP in chemistry is the abbreviation for Standard Temperature and Pressure. STP most commonly is used when performing calculations on gases, such as gas density
8 0
4 years ago
When 1.0 mol of Fe reacts with Cl2 forming FeCl3, how many moles of Cl2 are required to react with all of the iron?. .
GenaCL600 [577]
When 1.0 mol of Fe reacts with CI2 forming FeCI3, 1.5 mol CI2 are required to react with all of the iron.
5 0
3 years ago
Read 2 more answers
1) Copper oxide and carbon combine to produce metallic copper. Which of these is the balanced equation for this reaction?
Goshia [24]
The answer to your question is B
5 0
3 years ago
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