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svet-max [94.6K]
3 years ago
15

Density is a measure of what?

Chemistry
2 answers:
Sav [38]3 years ago
3 0
Answer is

3) how much mass per unit of volume is in a substance
irinina [24]3 years ago
3 0

Answer: How much mass per unit of volume is in a substance

Explanation:

Density is defined as the mass contained per unit volume.

Density=\frac{mass}{Volume}

It is fixed for a given compound at a fixed temperature.

Example: Mass of bromine = 586 grams

Volume of bromine = 188 ml

Putting in the values we get:

Density=\frac{586g}{188ml}=3.12g/ml

Thus density of bromine will be 3.12 g/ml and it is mass per unit of volume in a substance.

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Answer 1) : According to the complete question attached in the answer,

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(n−1  =  total number of radial nodes in s orbitals)

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Answer 2) The radial nodes are observed in I'm seeing radial nodes at  

1.9a_{0},  6.4a_{0},13.9a_{0} and  27.0a_{0}.

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Explanation : It is quite easy to observe the given graph and find out the approximate values of the radial nodes, it does not requires any equation to be solved. Equation can be used to find the radial nodes if it was supplied along with the question. Although by mere speculation one can find out the answer.

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