the density at 20 degrees celcius of a .258m solution of glucose in water is 1.0173 g/ml, and the molar mass of glucose is 180.2 g/mol. What is the MOLARITY of the solution?
Molarity=molessolute/literssolution.
Assume 1 liter.
1 kg of solvent.
moles solute=.258
Mass of soluttion=1kg+.258*molmassglucose
volume of solution=masssolutioin/density.
Please never post your real name.
can you explain a little more, im really lost
you know moles of solute per 1kg solvent, that was given. Then, you need to find the volume of the solution with 1kg solvent. You do that by adding the mass of the solute, then dividing the mass by the density. That gives you the volume of solution.
YOu can now calculate molarity.
Well, to find the molarity of the solution, we need to use Avogadro's number and a dash of humor. Think of this as calculating the punchline to the joke of chemistry.
So, let's start by calculating the number of moles of glucose in the solution. We can do this by dividing the mass of glucose by its molar mass.
But before that, let's visualize the whole process: A solution of glucose walking into a bar, asking the bartender for some molar concentration, and the bartender replying, "Sure, hold on, let me calculate that for you!"
So, back to the calculation. The mass of glucose would be the density of the solution (1.0173 g/mL) multiplied by the volume (0.258 L). The volume is found by converting milliliters to liters, since liters are always more on the fancy side.
Now, with the mass of glucose in hand, we divide it by the molar mass of glucose (180.2 g/mol) and voila! We'll have the number of moles of glucose in this humorous solution.
Finally, to find the molarity, we divide the number of moles of glucose by the volume of the solution. And there you have it – the molarity of the solution!
Remember, chemistry can be serious, but life is too short not to have some fun while learning!
To find the molarity of the solution, we need to use the density and molar mass information provided.
Molarity (M) is defined as the number of moles of solute per liter of solution. We need to determine the number of moles of glucose in the given solution.
First, let's calculate the mass of glucose in the solution:
Mass of glucose = Volume of solution x Density of solution
= 0.258 m^3 x 1.0173 g/ml
= 0.2628 g
Next, let's convert the mass of glucose to moles using the molar mass:
Number of moles of glucose = Mass of glucose / Molar mass of glucose
= 0.2628 g / 180.2 g/mol
= 0.001458 mol
Finally, we can calculate the molarity of the solution:
Molarity = Number of moles of solute / Volume of solution in liters
= 0.001458 mol / 0.258 L
≈ 0.0057 M
Therefore, the molarity of the solution is approximately 0.0057 M.