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Kamila [148]
3 years ago
8

Which of these statements accurately describes polymers?

Chemistry
2 answers:
lesya692 [45]3 years ago
3 0

Answer:

Its A.) Polymers are macromolecules

Explanation:

rosijanka [135]3 years ago
3 0

Answer:

The correct answer that you are looking for is A.) Polymers are macromolecules.

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Which of the following is an example of maintaining homeostasis? A. Learning B. Jumping C. Shivering D. Smiling
yawa3891 [41]

Answer:

Shivering.

Explanation:

Homeostasis is the bodies need to keep things at a normal. When you are cold you shiver to produce body heat and get back to normal  

5 0
3 years ago
Observe as equações e de acordo com Brönsted-Lowry, os compostos destacados são, respectivamente
Alex777 [14]

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7 0
2 years ago
A solution is made by mixing 33.0 ml of ethanol, C2H6O and 67.0 ml of water. Assuming ideal behavior, what is the vapor pressure
ivann1987 [24]
Grams ethanol = 33 ml times .789 gms/ml = 26.037 gms 

<span>Moles ethanol = 26.037 gms / 46 gms/mole = .57 moles </span>

<span>Moles water = 67 ml or 67 grams/18 gms/mole = 3.22 moles </span>

<span>total moles = .57 + 3.72 = 4.29 moles </span>

<span>Mole fraction ethanol = .57 moles ethanol / 4.29 moles total = 0.13</span>

<span>Moles fraction water = 3.72 moles water / 4.29 moles total = 0.87</span>

<span>Partial pressure of ethanol = mole fraction ethanol (.13) _ times VP ethanol 43.9 torr) = 5.707 torr </span>

<span>partial pressure water = mole fraction water .87) times VP water (l7.5 torr) = 15.23 torr </span>

<span>Total vapor pressure over solution = 5.71 torr + 15.23 torr = 20.94 torr</span>
7 0
3 years ago
How many kilojoules are needed to convert 77.5 grams of ice at -8.00°C to water at 95.0°C?
Over [174]
Q=mcθ
m= 0.0775 kg
c= 4184 J·kg−1·K−1.
θ= T(final) - T(initial), 95-(-8)

Q=33398.78 J so kJ divide 1000

= 33.39878 kJ
7 0
2 years ago
Balance them i dont get how
baherus [9]
Add in the numbers in pen

5 0
3 years ago
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