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ololo11 [35]
3 years ago
5

How would you explain why liquids solidify when they are cooled???

Chemistry
1 answer:
Ostrovityanka [42]3 years ago
5 0
When liquids are subjected to lower temperatures, the kinetic energy of the molecules would decrease accordingly making them closer to each other and leading to a decrease in volume until the substance is solidified. Hope this answers the question.
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An omnivore eats what kind of food
skelet666 [1.2K]
Omnivores eat both plants and animals. Carnivores only eat animals and herbivores only eat plants.
3 0
3 years ago
Read 2 more answers
A 642 mL sample of oxygen gas at 23.5°C and 795 mm Hg, is heated to 31.7°C and the volume of the gas expands to 957 mL. What is
Ratling [72]
We can use the combined gas law equation to find the new pressure of the gas. 
\frac{P1V1}{T1} =  \frac{P2V2}{T2}
where P - pressure 
V - volume
T - temperature 
parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation 
P1 - 795 mm Hg x 0.0013 atm/ mm Hg = 1.033 atm
T1 - 23.5 °C + 273 = 296.5 K
T2 - 31.7 °C + 273 = 304.7 K
substituting the values in the equation 
\frac{1.033 atm *642 mL}{296.5K}=   \frac{P*957mL}{304.7K}
P = 0.712 atm 
the answer closest to this value is A) 0.723 atm
therefore answer is 
<span>A) 0.723 atm</span>
8 0
4 years ago
What mass of AI2O3 forms, knowing the molar mass of Al2O3 is 102 g/mol ?
TiliK225 [7]

Question

What mass of Al₂O₃ form is produced if 25.00 g of aluminum (al) is reacted completely?, knowing the molar mass of Al₂O₃ is 102 g/mol?

Atomic mass of Al =27 and O = 16

The molar mass of Al₂O₃ = 102.

Mass of aluminium in 102 g of Al₂O₃ = 54 g

54 g Al => 102 g Al₂O₃

25g Al => x g Al₂O₃

x = 25*102/54 = 47.2 g Al₂O₃

To solve more questions on molar mass check here:

brainly.com/question/21334167

3 0
1 year ago
What information does the atominic numer give you about an element
uysha [10]

Answer:

It gives the number of protons in the nucleus of each atom of that element.

Explanation:

6 0
3 years ago
8
GalinKa [24]

The bowl of mixed fruits is a mixture because there are several things making up the object. Hence, option (B) is correct.

What is a mixture?

  • The matter is categorized as mixtures and pure substances.
  • A mixture is defined as a combination of substances that are not chemically mixed.
  • A mixture can exist in solid, liquid, or gas form.
  • A mixture can exist in the same or in a different phase. It can be homogenous or heterogeneous.
  • If the substances are combined in the same phase, then the mixture is a homogeneous mixture.
  • But if the substances are combined in different phases, then it is a heterogeneous mixture.

Therefore, the mixed fruit bowl is a mixture, because there are several things making up the object.

Hence, option (B) is correct.

To learn more about mixture, visit: brainly.com/question/12160179

#SPJ9

8 0
2 years ago
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