By nonmetals, metals, and gases
Answer : The heat of combustion of n-propanol is 0.554 kJ/mol
Explanation :
First we have to calculate the moles of n-propanol.
Molar mass of n-propanol = 60.09 g/mole
Now we have to calculate the heat of combustion of n-propanol.
As, 0.0166 mole of n-propanol liberated heat of combustion = -33.4 kJ
So, 1 mole of n-propanol liberated heat of combustion = 0.0166 × (-33.4 kJ)
= 0.554 kJ/mol
Therefore, the heat of combustion of n-propanol is 0.554 kJ/mol
I don't think so but I am not very good with this sort of stuff. I think it would depend on the drink mix.
For this, we use the Arrhenius equation to solve the problem. It is expressed as:
k = Ae^-(E/RT)
where k is the reaction rate, A is the pre-exponential factor, E is the activation energy and T is the temperature.
For a reaction, A is constant at different temperatures. We then isolate the constant and then introduce the second condition to the equation since it will still be equal to the constant. It is then simplified to:
ln(k2/k1) = -E/R (1/T2 - 1/T1)
ln(5.50k1/k1) = -51.64/8.314 (1/T2 - 1/343)
T2 = 379 K
Answer:
Exposure of a red blood cell to a hypotonic solution causes swelling and eventual bursting of the cell membrane upon prolonged exposure.
Exposure of a gram positive bacterial cell causes the flow of water into the cell however, its rigid cell wall protects it from bursting.
Explanation:
A red blood cell has a cell membrane but no rigid cell wall. The inside of a red blood cell is <em>hypertonic</em> (contains more solutes like DNA, proteins) therefore, an exposure to a <em>hypotonic</em> solution ( solution with less solutes and more water), causes water to flow into the cell membrane by osmosis.
Osmosis is the movement of fluids from a region of higher concentration to a region of lower concentration. This creates a balance in fluid contents across both environments.
After prolonged exposure to the<em> hypotonic</em> solution, the flexible cell membrane swells and eventually bursts.
A gram positive bacterial cell has a rigid cell wall and a cell membrane. When exposed to a <em>hypotonic</em> solution, water flows from the outside environment to the interior of the cell by osmosis through the cell wall and membrane. The rigid cell wall of the bacterial cell however, contains the swelling and prevents the cell from bursting.
