Answer:
<h2>A
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Explanation:
The activation energy for the forward reaction is the amount of free energy that is required or must be added to the system to go from the energy level of the reactants of the reaction to the energy level of the transition state( transition from reactants to product).
We can say that it is the minimum amount of energy needed to start a chemical reaction
So the activation energy of a chemical reaction is the energy that initiates the reaction.
Enzymes increases the rate of a reaction by decreasing this activation energy.
Because of the pressure. No oxygen in the water, however there is oxygen above the sea level. Thus, causing pressure to our bodies.
Answer:
mass number
Explanation:
When there is an element name followed by a dash and then a number, the number simply represents the mass number.
for example:
Oxygen- 18
18 represents the mass number of this particular isotope
Should be oxygen .. but water comes out of the leafs stomata ..
Answer : 0.026 moles of oxygen are in the lung
Explanation :
We can solve the given question using ideal gas law.
The equation is given below.
We have been given P = 21.1 kPa
Let us convert pressure from kPa to atm unit.
The conversion factor used here is 1 atm = 101.3 kPa.
V = 3.0 L
T = 295 K
R = 0.0821 L-atm/mol K
Let us rearrange the equation to solve for n.
0.026 moles of oxygen are in the lung
