The amount of heat released when 12.0g of helium gas condense at 2.17 K is; -250 J
The latent heat of vapourization of a substance is the amount of heat required to effect a change of state of the substance from liquid to gaseous state.
However, since we are required to determine heat released when the helium gas condenses.
The heat of condensation per gram is; -21 J/g.
Therefore, for 12grams, the heat of condensation released is; 12 × -21 = -252 J.
Approximately, -250J.
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Answer:
$1023.75
Step-by-step explanation:
2*.15=.30 + 4.25= 4.55
4.55 * 225 = 1023.75
The answer is "A. greater than" because if the number of edges increase, the measure of each exterior angle increases too!
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Answer:
Perimeter of a polygon with 31 sides = (side length) x 31 = 279 units
Area of a polygon with 31 sides = (n x Side2 x cot (Π/n))/4 = (n x 92 x cot (Π/31))/4 = 6173.16 square units
Sum of the interior angles of a polygon with 31 sides = (n-2) x 180 degrees = (31-2) x 180 degrees = 5220 degrees
Interior Angle of a polygon with 31 sides = (n-2) x 180/n degrees = (31-2) x 180/31 degrees = 168.38 degrees
Exterior angle of a polygon with 31 sides = 180 - Interior Angle = 180 - 168.38 = 11.61 degrees
Inradius = Radius of In-circle = (side length) x cot (Π/31) = 9 x cot 5 = 88.5 units
Circumradius = Radius of Circum-circle = (side length) x cosec (Π/31) = 9 x cosec 5 degrees = 88.96 units
Symmetry Group = D31 31 rotational symmetries and 31 reflection symmetries. The "D" stands for di-hedral.
Step-by-step explanation:
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8x^2-4x+6x-3=0
4x(2x-1)+3(2x-1)=0
(4x+3)(2x-1)=0
x = -3/4 or x = 1/2
