Energy flows into an ecosystem in the form of light and exits in the form of heat
The symbol for the hydronium ion is H3O+.
An hydronium ion is usually formed when an acid is present in water. The hydronium ion is made up of three atoms of hydrogen and one atom of oxygen, thus an hydronium ion is a water molecule which has gained an extra positive hydrogen ion.
<u>The velocity and pressure of a fluid is related as follows:</u>
The speed is also called as velocity. Bernoulli’s Principle states that, higher the velocity of a fluid (means liquid or gas), the lower the pressure it exerts. The rapid motion of the fluid molecules causes the Fluid pressure. The Bernoulli equation is given as,
Where,
P – Pressure
ρ –density
v – Velocity
g – Gravitational acceleration
h - Elevation
So, when the fluid moves faster, some energy from the rapid motion of the fluid is used to move faster in the fluid’s direction of motion which results in a low pressure. Thus, the more the speed of a fluid, the lesser is the pressure ().
The answer should be B, it reacts in air to form a green layer.
Chemical properties means that how the substance that reacts with other substance to produce new substances. Usually it cannot be measured or observed just with the substance itself.
From all the options above, only B is a reaction. The green layer formed is a new substance produced by copper and air. It involves a chemical change.
Other options like boiling points or state of matter, these are physical properties. They do not require it to react to other substances and the can be measured and observed easily.
Explanation:
It is known that relation between Gibb's free energy and equilibrium or reaction quotient is as follows.
..... (1)
At equilibrium, = 0. Also, Q = K this means that reaction is at equilibrium.
Therefore, formula in equation (1) will become as follows.
....... (2)
It is known that for a sparingly soluble salt, K =
Thus, equation (2) will become as follows.
....... (3)
So, when value of increases then there will be decrease in the value of according to equation (3).
Hence, we can conclude that the calculated value of would be too big.