Answer: 0.335 mols Ca(NO3)2
Explanation: To go from grams to mols you divide grams by the molar mass of the substance so, 55/164.088 = 0.335
pH = 2.1
Let resembles the acid; as a weak acid (a small value of ) would partially dissociate to produce protons and , its conjugate base. Let the final proton concentration (i.e., ) be . (Apparently ) Construct the following RICE table:
By definition, (all concentrations are under equilibrium condition)
It is given that
Equating and simplifying the two expressions gives a quadratic equation; solve the equation for gives:
The pH of a solutions equals the opposite of the logarithm of its proton concentration to base 10; thus for this particular solution
The one nearest the surface is the "zone of aeration", where gaps between soil are filled with both air and water. ... When the entire area below the ground is saturated, flooding occurs because all subsequent precipitation is forced to remain on the surface.
Gonna have to go with A since two genes create a new one example is parents having a kid that’s how I understood it sorry if it’s wrong or I misunderstood