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DiKsa [7]
3 years ago
9

When salt and water are mixed, they form a solution like in the ocean. When sand and water are mixed, they form a mixture where

the sand does not dissolve. Which statement might summarize this observation?
A) Mixtures and solutions are the same.
B) All substances mixed with water are solutions.
C) In mixtures, you cannot see the separate substances.
D) In solutions you cannot see the separate substances.
Physics
2 answers:
kodGreya [7K]3 years ago
4 0

The correct answer is D) In solutions you cannot see the separate substances.

Explanation:

In a solution, one substance dissolves in another, for example, salt dissolves in water. This process results in a homogeneous substance or mixture, in which the particles of the original substances cannot be seen separately. Also, these substances are chemically combined forming a new substance.

On the other hand, in a mixture such as combining sand and water, the particles of each substance are physically, but not chemically combined. Due to this, particles of each substance can be identified in the mixture, and these can be separated. According to this, the statement that summarizes the observation presented is "in solutions you cannot see the separate substances" considering in solutions the result is a homogeneous substance.

Yuliya22 [10]3 years ago
3 0

Answer:

D

Explanation:

The answer is D. Solutions you cannot see the separate substances. however in a mixture you can see the different substances. So the correct choice is D

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3 years ago
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A crate is pushed up each of the two ramps shown in the diagram below. Based on the concept that simple machines make work easie
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Answer:

ramp b requires less force than ramp a

Explanation:

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3 years ago
A force off 700 newtons is applied to a 600 kg bowling ball. What is the acceleration of the bowling ball once the force is appl
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Answer:

<h2>1.17 m/s²</h2>

Explanation:

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a =  \frac{f}{m}  \\

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We have the final answer as

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oee [108]

Answer:

83.72 K

Explanation:

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T = Boiling point

Potential energy due to dispersion of gas is given by

P=-\frac{3}{4}\frac{\alpha^2I}{r^6}\\\Rightarrow P=-\frac{3}{4}\frac{(1.66\times 10^{-30})^2\times 1521\times 10^3}{(3.8\times 10^{-10})^6}\\\Rightarrow P=-1044.01\ J/mol

Kinetic energy is given by

K=\frac{3}{2}RT

The potential and kinetic energy will balance each other

P=\frac{3}{2}RT\\\Rightarrow 1.04401\times 10^{-33}=\frac{3}{2}RT\\\Rightarrow T=\frac{1044.01\times 2}{3\times 8.314}\\\Rightarrow T=83.72\ K

The boiling point of argon is 83.72 K

7 0
3 years ago
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