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What is the molar mass of a compound if 25.0 g of the compound dissolved in 750 mL gives a molarity of 0.290 M?
Wiki User
∙ 12y ago
1st convert mL to L:
750mL x (1L/1000mL)= 0.75L
2nd find the number of moles:
0.75L x (0.290mol/ 1L)= 0.2175mol
3rd now find the MM(Molar Mass):
25g x (1g/ 0.2175 mol) = 114.9 g/mol or 115g
Wiki User
∙ 12y ago
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What is the molarity of 2 moles of a compound dissolved in 4 L of water?
The molarity of a solution is the amount of substance in a given amount of solute. The units are usually given as moles per liter (or dm3). As such, for each liter you have 0.5 moles of substance (2 divided by 4), so it's a 0.5 molar solution.
What is the molarity of a solution with 5 moles of lithium flouride dissolved in 200 mL of water?
Molarity is per litre. Therefore 200x5 is a litre. so 5x5 is 25. The answer is 25 molar.
What information would you need in order to convert molarity to percent by volume?
You need to know the molar mass of the compound.
How are molarity and molar mass related for a compound?
The molar mass of a substance is measured in grams per mole written as gmol-1. It is worked out using the Mole formula by dividing mass in grams by the amount in moles.
Moles of a solute per kilogram of a solvent?
The number of moles of solute dissolved in 1 L of a solution would be the molarity. As an example, if you had 2 moles of solute in 1 liter the molarity would be 2M.
What is the molarity of 2 moles of compound dissolved in r L of water?
Need to know the mass of BaCl2 in order to calculate molarity.
What is Molar Solutions?
When we say that a solution has a given molarity, it tells you how much of a given substance is dissolved into the solution. A 1.0 molar solution has one mole of a substance dissolved into one liter of water.
What is the molar solution?
When we say that a solution has a given molarity, it tells you how much of a given substance is dissolved into the solution. A 1.0 molar solution has one mole of a substance dissolved into one liter of water.
What is the molarity of 2 moles of a compound dissolved in 4 L of water?
The molarity of a solution is the amount of substance in a given amount of solute. The units are usually given as moles per liter (or dm3). As such, for each liter you have 0.5 moles of substance (2 divided by 4), so it's a 0.5 molar solution.
What is the molarity of a solution with 5 moles of lithium flouride dissolved in 200 mL of water?
Molarity is per litre. Therefore 200x5 is a litre. so 5x5 is 25. The answer is 25 molar.
What information would you need in order to convert molarity to percent by volume?
You need to know the molar mass of the compound.
How are molarity and molar mass related for a compound?
The molar mass of a substance is measured in grams per mole written as gmol-1. It is worked out using the Mole formula by dividing mass in grams by the amount in moles.
Moles of a solute per kilogram of a solvent?
The number of moles of solute dissolved in 1 L of a solution would be the molarity. As an example, if you had 2 moles of solute in 1 liter the molarity would be 2M.
What is the molarity of a solution with 0.207 mol of calcium acetate dissolved in a total volume of 166.5mL?
Molarity = moles solute/liters solution = 0.207 moles/0.1665 L = 1.24 molar (3 sig. figs.)
What is the molarity of a solution that contains 0.55 moles of a substance dissolved in half a liter of solution?
Molarity means moles per litre. You have to keep that same ratio. i.e. .55moles in 0.5 litres is the same as 1.1 moles in a litre. Therefore the molarity is 1.1 molar.
What is the molarity of a solution that has 2.5 moles of solute dissolved in 500 mililiter of solution?
Molarity is per litre. So whatever you do to convert the volume back to per litre you have to do to the moles. 2.5/500, x1000 is 5 molar.
What is the molarity of a solution containing 8 grams in 500 mL of solution?
It depends highly on the compound to be dissolved and the solvent. Molarity is measured my moles per litre, and if you don't know the molar mass of the compound, you can't work out the molarity.
