Answer: The molar mass of the hydrocarbon is 37 g/mol
Explanation:
Elevation in boiling point is given by:
= Elevation in boiling point
i= vant hoff factor =1 (for non electrolyte )
= boiling point constant =
m= molality
Weight of solvent (acetone) = 95 g = 0.095 kg
Molar mass of solute = M g/mol
Mass of solute = 3.75 g
Thus the molar mass of the hydrocarbon is 37 g/mol
Velocity vs. time graph shows the acceleration as a slope whereas displacement vs. time graph shows the velocity as a slope. So, the given statement is false.
Answer: Option B
<u>Explanation:</u>
To understand the acceleration graphically, consider the x axis of the graph as the run and the y axis as the velocity rise. Now, as we all know that,
We can estimate this through the graph. let's draw the motion of an object with time if it's velocity is changing in every second by 4 m/s. Now if we draw this on graph, we will see that there is a slope between the two corresponding values of time and velocity. This slope defines the acceleration for the object with time.
Now, in the same way, if we draw a distance and time graph respective to the y and x axis; we'll get a slope which defines the velocity of the object i.e. change in distance with time.
Hence, with a velocity vs time graph, we get the slope for acceleration whereas with the distance and time graph, we get the slope for velocity. So both the cases, we see there is no velocity slope on an acceleration and time graph. Hence the statement is false.