M/V=D
40.5/15=2.7
The density of the block of aluminum is 2.7 g/cm³.
Answer:
The Gibbs free energy is -2997.83 kJ mol-1.
Explanation:
The change in Gibbs free energy of the reaction
can be calculated using the formula.

WHere R = Gas constant = 8.314KJ/Kmol
T = the temperature of the reaction in Kelvin = (37.0 + 273) = 310K
K = Raio of molar concentration of the two reactants = 1.6/0.5 = 3.2
Therefore,

Therefore the Gibbs free energy is -2997.83 kJ mol-1.
The negative sign indicates that the reaction is spontaneous.
The answer to the question is a
Answer:
atm
Explanation:
As we know that

Where P is the pressure in atmospheric pressure
T is the temperature in Kelvin
R is the gas constant 
V is the volume in liters

Substituting the given values in above equation, we get -

On rearranging, we get

atm