A series of data points are plotted on the graph to the right. (a) Draw the \"be

Question

A series of data points are plotted on the graph to the right. (a) Draw the "best" straight line through the points while not passing directly through any data point, and (b) determine the value of the intercept. To the right is a plot of the mass of solute in various volumes of a concentrated acid solution. (a) Calculate the slope of the line and report the value with the correct units. slope = _____ b) Write the mathematical equation for the straight line that relates mass of solute and volume of solution.

Explanation / Answer

Q1.

From the line, the best fit will cross appox, in the y-intercept value of "2"

that s, the mass of the solute when V = 0, will be m = 2 g

Q2.

Slope can be calculated via

m = (y2-y1)/(x2-x1)

point 1, 0,0, point 2, 20, 6.5

m =(6.5-0) / (20-0)= 0.325

the equation that best fits

y-intercept = 0

so

y = m*x + b

y = 0.325*x

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