Answer:
The pressure of a given amount of gas is directly proportional to iys absolute temperature provided that that the volume does not change
Answer: Thus 663 J of heat is released when 27.6 g
cools from 83.1 °C to 55.6 °C
Explanation:
The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

Q = Heat released = ?
m = mass of substance = 27.6 g
C = specific heat capacity = 
Initial temperature=
= 
Final temperature =
= 
Change in temperature ,
Putting in the values, we get:

As the value of q is negative, it means the heat has been released and it is 663J
Answer:
Darwin had arrived at a complete theory of evolution by 1839, but it was to be another 20 years before he published his ideas of evolution through natural selection in his epochal book On the Origin of Species by Means of Natural Selection.
Less than 5cm of precipitation a year
Answer:
C. Alkaline Metal ok thanks