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alina1380 [7]
3 years ago
11

1) Which of the following is the best example of a physical change?

Chemistry
1 answer:
never [62]3 years ago
4 0

1 is b and 2 is also b

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The volume of a metal rod was determined to be 38.6 mL. Its
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On the basis of significant figures, the accuracy of measurement made using an analytical balance is more reliable.

<h3>What is an analytical balance?</h3>

An analytical balance is a special type of weighing balance that has a reputation for obtaining the mass of very small objects even as low as milligrams. It consists of a transparent glass casing and a scale.

On the basis of significant figures, the use of an analytical balance to determine the weight will improve the accuracy of the determination since it determines the mass to more significant figures.

Learn more about analytical balance: brainly.com/question/795053

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2 years ago
If the density of an object is 60 g/cm 3 and its mass 20 grams what is its coulume in cm 3
Licemer1 [7]
3 cubic centimeters, Volume= density/ mass





7 0
3 years ago
The final volume of the solution is 284 mL. What is the concentration of CuSO4 in the final solution, in mol/L?
DochEvi [55]

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0.0252mol/L

Explanation:

The following data were obtained obtained from the question:

Volume of solution = 284mL = 284/1000 = 0.284L

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Molarity = 7.157x10^-3 /0.284

Molarity = 0.0252mol/L

The concentration of the solution is 0.0252mol/L

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3 years ago
How is protenin in milk broken down in our digestive system​
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when we drink the milk the digestive system produce protease enzyme to break down the protein of milk.

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A gas expands and does P-V work on the surroundings equal to 275 J. At the same time, it absorbs 216 J of heat from the surround
mafiozo [28]

Answer:

answer

Explanation:

sorry I do not know the answer, have a great day

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