Answer:
endothermic
Explanation:
Heat is added to make the process possible.
Explanation:
This is due to a reduction in atmospheric pressure – pressure due to the weight of the overlying air column). Remember that the higher the altitude the lower the air density and subsequently the lower the air pressure.
Therefore when heating water at higher altitude the vapor pressure of the water at the surface overpowers the atmospheric pressure – which is slightly lower than at sea level – even before the water temperatures reach 100 degrees centigrade.
Answer:
2Al(s) + 6HCl(aq) = 2AlCl3(aq) + 3H2(g)
Explanation:
The reaction is a displacement reaction.
The reaction does not commence immediately because the Al(aluminum) has Al2O3 (Aluminum oxide) which protect it from reacting with water.
It takes some time for the HCl (hydrochloric acid) to eat the coating, then the reaction proceed vigorously to produce hydrogen gas bubbles. Generally metals that are above hydrogen in the electrochemical series tend to displace Hydrogen from Hydrochloric acid. The more negative the electrochemical volts the more the tendency to lose electron. Metal above hydrogen have negative evolts while those below have positive evolts
water is a major dissolved volatile constituent in both magmas and volcanic gases
Answer:
The coefficient of thermal expansion α is
The coefficient of compressibility
Now considering 
From equation (1) we have that
From ideal equation
So
=> 
=> 
Explanation:
From the question we are told that
The coefficient of thermal expansion is 
The coefficient of compressibility is 
Generally the ideal gas is mathematically represented as
=> 
differentiating both side with respect to T at constant P
substituting the equation above into 
Recall from ideal gas equation 
So
Now differentiate equation (1) above with respect to P at constant T
substituting the above equation into equation of 
Recall from ideal gas equation that
So
Now considering
From equation (1) we have that
From ideal equation
So
=>
=>
