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mina [271]
3 years ago
5

Question 26(Multiple Choice Worth 1 points) [01.03]Which of the following statements does not support scientific evidence of the

Big Bang Theory? (A)Evidence shows that the universe is continually expanding. (B)There are uniform amounts of cosmic microwave background radiation throughout the universe. (C)There is evidence of light elements throughout the universe. (D)Scientists have reproduced the same conditions that were present at the moment the universe began.
Chemistry
1 answer:
svp [43]3 years ago
8 0
B. There are uniform amounts of cosmic microwave background radiation throughout the universe.
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The arrows below represent the velocities of two vehicles. Which claim explains why the velocity of each vehicle is a vector qua
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Answer:

It has direction and size.

Explanation:

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Draw the following isomers of the alkanes of molecular formula C-H16
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3 years ago
Carbon tetrachloride, CCl4, was once used as a dry cleaning solvent, but is no longer used because it is carcinogenic. At 57.8 °
Mila [183]
This problem is to use the Claussius-Clapeyron Equation, which is:

ln [p2 / p1] = ΔH/R [1/T2 - 1/T1]

Where p2 and p1 and vapor pressure at estates 2 and 1

ΔH is the enthalpy of vaporization

R is the universal constant of gases = 8.314 J / mol*K

T2 and T1 are the temperatures at the estates 2 and 1.

The  normal boiling point => 1 atm (the pressure of the atmosphere at sea level) = 101,325 kPa

Then p2 = 101.325 kPa
T2 = ?
p1 = 54.0 kPa
T1 = 57.8 °C + 273.15K = 330.95 K
ΔH = 33.05 kJ/mol = 33,050 J/mol 

=> ln [101.325/54.0] = [ (33,050 J/mol) / (8.314 J/mol*K) ] * [1/x - 1/330.95]

=> 0.629349 = 3975.22 [1/x - 1/330.95] = > 1/x =  0.000157 + 1/330.95 = 0.003179

=> x = 314.6 K => 314.6 - 273.15 = 41.5°C

Answer: 41.5 °C 
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3 years ago
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