How many moles of Ba(OH)2 are present in 225 mL of 0.800 M Ba(OH)2?
Answers
Hi there,
Molarity M = number of moles ÷ Volume in leter
So,
n = M×V
n = 0.800 × 0.225 = 0.18 mol
Hope the answer helps
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Answer:
Moles of solute=0.180mol or Moles of
Explanation:
We know the molarity and volume of the solution. Volume does not have good units because it is given in milliliters instead of liters.
225 ml can be converted to liters using the conversion factor 1000 ml = 1L.
When 225 ml is divided by 1000 ml/L, you get a volume of 0.225 L.
This can be done by multiplying the liters of solution on both sides of the equation. The liters of solution are disturbed on the right-hand side, so the number of moles will be equal to molarity times volume like this:
Moles of solute=litres of solution*molarity
Moles of solute=0.225L*0.800M
Hence moles of solute=0.180mol or moles of =0.180mol
Molarity is the number of moles of solute per liter of solution. The symbol for molarity is a capital M.
Concentration is the amount of solute in a solution. In other words, it is the amount of substance that has been mixed into your liquid. Concentration is usually measured in molarity.
The mole is the basic unit in chemistry. It is the amount of a substance in grams that contains as many atoms, molecules, or ions as 12 grams of carbon-12 (6.022 x ). A mole of oxygen, for example, is 6.022 x
oxygen atoms.
Molarity is the number of moles of solute per liter of solution.
The first records of the term molarity date from around 1930. It combines the word molar, an adjective that refers to moles, and the suffix -ity, a suffix used to form abstract nouns denoting state.
Why do we care about molarity? Because it tells us how densely packed the substance is in solution. Is there a lot of salt in the water or just a little? If you know the molarity of the solution, you can also determine the exact amount of the substance (in grams) that is dissolved in the solution.
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