I really need help with question please help

Question

1.    A student measures that the mass of a sugar solution is 5.70 g and the volume of the solution

is 5.0 mL.

(a) Calculate the density of the solution. 

(b) Calculate the concentration (mass/mass %) of the solution (use your density vs.

concentration graph).

Answer 1

a) Density = mass/volume

knowing this you can use the two values given in the problem to plug in and solve for density

m=5.7g v=5mL

*keep in mind that you might have to convert your units if the problem is asking for a specific unit for density

b) I am a little unsure without seeing the actual graph but I would assume that because it asked you to solve for density in part a, you would need to identify where that density value is on your graph. What I mean by this, is look at the axis labeled density and find where your value for part a is located. Next, trace along that value until you reach a point on your graph's line. Finally, identify what the concentration value for this point is. Now that you know the concentration, which I am assuming is given in mass% on the graph, then you can take the originally given mass from the question (m=5.7g) and divide by the mass% you just found. This would give you concentration in mass/mass%.