Your answer would be,
Formula: Molarity (M) = Number of moles of solute/Solutions volume Liters
0.009(50) = .45 gm dissolved in 50 ml H2o
= 0.20(50) = 10 gm
Hope that helps!!!
It is equals to the sum of protons and neutrons. C
Answer true
Explanation:
Every recognized species on earth (at least in theory) is given a two-part scientific name. ... These naming rules mean that every scientific name is unique. For example, if bluegill sunfish are given the scientific name Lepomis macrochirus, no other animal species can be given the same name
The mass of required will be 0.6075 g.
Calculation of mass:
The reaction:
Volume of = 75 mL
Concentration of = 0.100 M
Step 1:
Molarity is moles of solute in 1000 mL of the solution.
Moles of = 0.0075
Step 2:
From the above equation,
2 moles of is precipitated by 1 mole of
So, 0.0075 moles will be precipitated by-
moles of
= 0.00375 moles of
Step 3:
Molar mass of = 162 g/mol
So, Mass of required will be 0.6075 g.
Learn more about Dilution factor here:
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Neutral pH means a pH of 7, yes? Recall that 'pH' means the POWER of Hydrogen. You should be familiar with the equation : pH = -log[H+].
In this case, 7 = log[H+].
Mathematically rearranged, this means that to find H+ concentration,
[H+] = 10 ^-pH.
In this case, [H+] = 10 ^-7.
I am assuming this is conducted at a standard 25 degrees. The auto-dissociation formula of water is this: Kw = [H3O+] x [OH-] at 25 degrees.
The concentration of Hydronium is the same as the concentration of hydrogen, 10 ^-7. mol/L.
There's your answer!