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elena-s [515]
3 years ago
10

55 points take the or whatever but Im getting head on my 15th bday on march 26th gonna be great also help me Two or more substan

ces dispersed in one another but each retaining their own identity is a _____.
substance
mixture
solute
compound
Chemistry
1 answer:
Kipish [7]3 years ago
3 0
Mixture is the answer.
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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

Volume is proportional to n which depends upon number of molecules .

So volume will increase if number of molecules increases .

6 0
3 years ago
What evidence should Mitchell collect to BEST support the second law of thermodynamics?
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Answer:

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3 years ago
If f(x)=x^2 and g(x)=2x+3, what is f(g(x))
IgorC [24]

Answer:

\huge\boxed{f(g(x)) = 4x^2 + 12x + 9}

Explanation:

In its raw form, function notation essentially represents an equation with only one unknown variable, expressed in terms of another.  Thus, f(x) = x² + 7x can be expressed as

g(x) = 2x + 3

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Hope it helps :) and let me know if you want me to elaborate.

6 0
3 years ago
Read 2 more answers
Ethanol is a common laboratory solvent and has a density of 0.789 g/ml. What is the mass, in grams, of 125 ml of ethanol?
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The density of a material is its unique property by which a unknown material can be identified and also the impurity (if present) in a material can be concluded. Mathematically the density can be expressed as-\frac{mass}{volume}. Thus from the mathematical expression we can say that the density is the mass per unit volume of a material. Here the density of ethanol is given 0.789 g/mL. Thus the weight of the 1 mL ethanol is 0.789g. Thus the weight of the 125 mL of ethanol will be (125×0.789) = 98.625 g.

3 0
3 years ago
Structural Formulas for Covalent Molecules
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Answer:

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HOPE IT HELPS THANK ME LATER.

6 0
3 years ago
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