Which of the following is not a physical property?

Chemistry

1 answer:

kozerog [31]2 years ago

5 0

Answer: Reactivity is not a physical property, it is a chemical property.

Explanation:

Physical property is a value of matter that can be observed and measured without any change in composition of the matter. Examples of physical properties are color, combustion,melting point,boiling point,solubility, texture, appearance, polarity, odor,viscosity, density and many more.

Chemical properties are characteristics that are obvious or seen when substances undergo chemical reaction. Examples are reactivity,toxicity, acidity, flammability, and heat combustion.

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Find the number of chromium ions in 3.5 mol of chromium ions.

Ray Of Light [21]

Answer:

2.1 x 10^24 Cr ions

Explanation:

You need to multiply the 3.5 mol by the Avogrado's number (6.022 x 10^23) to get your answer.

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2 years ago

A chemical change is like a physical change because no new substance is formed. Agree or DIsagree and reason why

aleksandrvk [35]

I disagree, because a physical change changes the form, and a chemical change is a process where one or more substances are altered into new substances.

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2 years ago

A solution is made by adding 29.1 mL of concentrated perchloric acid ( 70.5 wt% , density 1.67 g/mL ) to some water in a volumet

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Answer:

The concentration of the solution is 1.364 molar.

Explanation:

Volume of perchloric acid = 29.1 mL

Mass of the solution = m

Density of the solution = 1.67 g/mL

$m=1.67 g/mL\times 29.1 mL=48.597 g$