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posledela
3 years ago
9

Which of the following is NOT an example of a mixture?

Chemistry
1 answer:
NISA [10]3 years ago
6 0
Water i think because it’s a pure substance
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Which of the choices below is matter? *<br> electricity<br> wood<br> sound<br> O<br> fire
irina1246 [14]

Answer:

Wood

Explanation:

Matter is anything that has mass. Nor sound, fire or electricity have mass which leaves wood as the final answer.

7 0
3 years ago
If you add more molecules but do not change the temperature or the pressure, what will happen to the system?
VladimirAG [237]

Answer:

the volume will increase

Explanation:

The kinetic energy of gas molecules depend upon the temperature . If temperature is increased , the molecules will move faster . When temperature is decreased , they move slower .

Hence when more molecules are added to a gas without changing its temperature , the velocity of gas molecules will remain unchanged .

Since pressure  is also constant , it is volume which will be increased .

It can be explained from universal gas formula as follows

PV = nRT

P , R and T is constant ,

V ∝ n

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So volume will increase if number of molecules increases .

6 0
3 years ago
4.<br> Think and discuss: Why is there an attraction between the two ions in this chemical bond?
Iteru [2.4K]

Answer:

One atom will give electrons to another atom to fill its shell, this is an ionic bond. The atom giving away electrons becomes positive and the one recieving electrons becomes negative.

Hope this helps

Explanation:

8 0
3 years ago
Read 2 more answers
Please help me ASAP
pantera1 [17]
CH4 + 2O2 -> 2H2O + CO2

You need to add a 2 in front of the O2 and H2O in order to balance the equation.
6 0
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The article defines several kinds of electromagnetic waves present in our everyday lives. Identify three kinds that you have exp
Doss [256]

\sf{MICROWAVE  \: OVENS}

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\sf{radio waves}

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\sf{X Rays}

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6 0
3 years ago
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