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When 0.27 moles CoCl2 is dissolved in water it forms the ions 0.27 mol of Co^(2+) , 0.27 moles of Cl^(-) & 0.27 moles of Cl^(-)
Hence there are three lots of ions.
Hence 0.27 moles CoCl2 forms 3 x 0.27 moles = 0.81 moles of ions.
What else can I help you with?
What is the molarity of 2 moles of a compound dissolved in 4 L water?
The molarity is calculated by dividing the moles of solute by the liters of solution. In this case, with 2 moles of compound dissolved in 4 liters of water, the molarity would be 0.5 M (2 moles / 4 L = 0.5 M).
When a sample of 20.0 g of CoCl2 - 6H2O is dried in an oven until dry CoCl2 is obtained what is the mass of dry cobalt chloride?
Equation:CoCl2.6H2O + heat --> CoCl2 + 6H2OYou have the mass of CoCl2.6H2O, which is 20g.You know the Mr of CoCl2.6H2O as well:58.93 + 35.5(2) + 6(18)= 237.93gmol-1 (The 18= H2O)You know the formula to calculate the no. of moles:n=mass/Mr, therefore n= 20/237.933 = 0.0841 molesThe ratio of CoCl2.6H2O: CoCl2 is 1:1, therefore CoCl2 has the same number of moles as does CoCl2.6H2O.So you want the mass of CoCl2? Well you havethe the Mr of it and now you have the no. of moles.Mr of CoCl2:58.93 + 35.5(2)= 129.93 (Or you could simply do 237.93 - 6(18) )Since n=mass/Mr you simply rearrange to get mass by itself. Which is:mass= n x MrTherefore the mass ofCoCl2ismass = 0.0841 x 129.93 = 10.92g (Answer)Daniel Hajsadr
How many total moles of KNO3 must be dissolved in water to make 1.5 liters of a 2.0 M current?
To find the total moles of KNO3 needed, use the formula: moles = molarity x volume (in liters). So, moles = 2.0 mol/L x 1.5 L = 3.0 moles of KNO3. Therefore, 3.0 moles of KNO3 need to be dissolved in water to make 1.5 liters of a 2.0 M solution.
What is the molality of a solution made by dissolving 2 moles of NaOH in 10Kg of water?
Molality =moles of solute/kilograms of solvent Moles of solute =2
Is the moles of silver ions in water equal to silver nitrate solution moles?
No, the moles of silver ions in water depend on the concentration of the silver ions present, while the moles of silver ions in a silver nitrate solution depend on the amount of silver nitrate dissolved. The two may not be equal unless the silver nitrate is completely dissociated into silver ions in water.
How many moles of ions are released when 42.1g of CuSO4is dissolved in water?
The number of moles is 0,527.
How is molar its measured?
In moles of a substance dissolved in 1 L of water.
How molarity it measured?
In moles of a substance dissolved in 1 L of water.
What is the molarity of 2 moles of a compound dissolved in 4 of water?
0.5 M
What is the molarity of 2 moles of a compound dissolved in 4 L water?
The molarity is calculated by dividing the moles of solute by the liters of solution. In this case, with 2 moles of compound dissolved in 4 liters of water, the molarity would be 0.5 M (2 moles / 4 L = 0.5 M).
What is the molarity of 2 moles of a compound dissolved in 4 l in water?
0.5 M
What is the the molarity of 2 moles of a compound dissolved in 4 l water?
0.5 M
When colbalt chloride unties with water to form hexahydrate its formula is written CoCL2 6H2O?
Yes, CoCl2 * 6H2O is the hexahydrate of the an hydrate CoCl2.
How many total moles of KNO3 must be dissolved in water to make 1.5 liters of a 2.0 M current?
To find the total moles of KNO3 needed, use the formula: moles = molarity x volume (in liters). So, moles = 2.0 mol/L x 1.5 L = 3.0 moles of KNO3. Therefore, 3.0 moles of KNO3 need to be dissolved in water to make 1.5 liters of a 2.0 M solution.
When a sample of 20.0 g of CoCl2 - 6H2O is dried in an oven until dry CoCl2 is obtained what is the mass of dry cobalt chloride?
Equation:CoCl2.6H2O + heat --> CoCl2 + 6H2OYou have the mass of CoCl2.6H2O, which is 20g.You know the Mr of CoCl2.6H2O as well:58.93 + 35.5(2) + 6(18)= 237.93gmol-1 (The 18= H2O)You know the formula to calculate the no. of moles:n=mass/Mr, therefore n= 20/237.933 = 0.0841 molesThe ratio of CoCl2.6H2O: CoCl2 is 1:1, therefore CoCl2 has the same number of moles as does CoCl2.6H2O.So you want the mass of CoCl2? Well you havethe the Mr of it and now you have the no. of moles.Mr of CoCl2:58.93 + 35.5(2)= 129.93 (Or you could simply do 237.93 - 6(18) )Since n=mass/Mr you simply rearrange to get mass by itself. Which is:mass= n x MrTherefore the mass ofCoCl2ismass = 0.0841 x 129.93 = 10.92g (Answer)Daniel Hajsadr
When 0.5 moles of Na2SO4 is dissolved in water how many moles of sodium ions are present?
Since the formula shows two sodium atoms in each formula unit of sodium sulfate and this compound normally completely ionizes in water solution, the number of sodium ions will be twice the number of moles of the salt; in this instance, 1.0 moles of sodium ions.
How many moles of KCI would be dissolved in 4 liters of water to make a 2 Molar solution?
We need 8 moles potassium chloride.
