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Alika [10]
4 years ago
8

Which of the following is a physical change?

Chemistry
2 answers:
vodka [1.7K]4 years ago
6 0
Hello,
A physical change describes a change that does physically and does not display “chemical” signs which are signs that indicate a precipitate being formed, change in color, density, or producing gas, etc. “Tearing a piece of paper in half” is a physical change because like I said earlier it doesn’t show any chemical change signs. I hope this helps you out!
OLga [1]4 years ago
6 0

Answer:

Tearing a piece of paper in half is a physical change.

Explanation:

A physical change is a change in which the molecular composition of the subject does not change. Since tearing a paper in half does not cause a change in the molecules of the paper, it is a physical change.

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Nimfa-mama [501]
Use the Equation of Clapeyron:

\frac{P_1.V_1}{T_1}=\frac{P_2.V_2}{T_2}\\
\\
\frac{0.5V_1}{235}=\frac{1.2*48}{320}\\
\\
320*0.5V_1=235*1.2*48\\
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7 0
3 years ago
How many molecules (not moles) of NH3 are produced from 5.25x10^-4 g of H2?
Oksi-84 [34.3K]

Answer:

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Explanation:

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3 years ago
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Hello

so ur answer is

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Explanation:

thanks... hope it helps

6 0
3 years ago
Describes the difference between the formulas for nitrogen monoxide and nitrogen dioxide?
qwelly [4]

Answer:

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