Answer: Physical properties of matter include color, hardness, malleability, solubility, electrical conductivity, density, melting point, and boiling point. For the elements, color does not vary much from one element to the next
Answer:

Explanation:
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In this case, since the formula for the calculation of molarity is:

Whereas we can compute the moles of the solute as shown below, making sure the volume is in liters:

Thus, by plugging in we obtain:

Next, since the molar mass of NaCl is 58.44 g/mol, we obtain the following mass:

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Answer:

Explanation:
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In this case, when we have a gas that is undergoing a change in both pressure and temperature, we utilize the Gay-Lussac's equation as shown below:

Thus, since we are given the initial pressure and temperature and the final temperature, we can compute the final pressure as shown below:

So we plug in, by making sure the temperatures are in kelvins, to obtain:

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Answer:
An example would be ice.
Explanation:
Because ice starts off as a solid and then when it melts from heat turns into a liquid and then if heated can to into a gas.