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3 years ago

Which of the following is NOT an example of a chemical change?

Chemistry

2 answers:

puteri [66]3 years ago

5 0

I think it’s C...........

Katyanochek1 [597]3 years ago

4 0

Answer:

hi there !!

B) Water evaporates into steam.

this is correct because only physical state changes, steam can be cooled down to get water again.

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Fog is an example of a

Crank

Answer:

colloidal system liquid dispersed in gas.

6 0

3 years ago

“NH4VO3” is a... Symbol Name Chemical formula

shepuryov [24]

Answer:

its a chemical formula, it has numbers and symbols

3 0

3 years ago

Read 2 more answers

What distinguishes a substance from a mixture?

wariber [46]

A mixture consists of numerous substances, whereas a substance does not consist of mixtures, but rather of compounds. Mixtures can be separated physically, while substances cannot.

4 0

3 years ago

0.250 moles of NaCl is dissolved in 0.850 L of solution. What is the molar concentration?

Nuetrik [128]

Considering the definition of molarity, the molar concentration is 0.294 $\frac{moles}{liter}$ .

Molarity reflects the concentration of a solution indicating the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

$molarity=\frac{amount of moles of solute}{volume}$

Molarity is expressed in units $\frac{moles}{liter}$ .

In this case, you know:

amount of moles of solute= 0.250 moles
volume= 0.850 L

Replacing in the definition of molarity:

$molarity=\frac{0.250 moles}{0.850 L}$

Solving:

molarity= 0.294 $\frac{moles}{liter}$

Finally, the molar concentration is 0.294 $\frac{moles}{liter}$ .

Learn more about molarity with this example: brainly.com/question/15406534?referrer=searchResults

6 0

2 years ago

Why does green light slow down more than orange light does

patriot [66]

Answer:

Green light has longer wavelengths than orange light. Green light has fewer particles than orange light. Green light refracts less than orange light. That is why Green light slows down more quickly than orange light does.

6 0

3 years ago