Question

What should be measured to calculate the average rate at which the water in a cup cools?

Change in mass of water and time in which the mass changes

Change in weight of water and time in which the weight changes

Change in volume of water and time in which the volume changes

Change in temperature of water and time in which the temperature changes

Answer 1

So, cooling (exothermic) is a change in temp, if you think about it, that makes sense, the variables for water don't really make sense if you think about water becoming ice

if you did this as an experiment, would you expect mass or weight or volume of the water to change?

Answer 2

So would it be A , right ?@agreene

Answer 3

There ??? @agreene

Answer 4

No, you're looking at a change in temp over time, if you want to see the change in temp for cooling.

think about it like this, take time as your x axis and y as your temp axis, if it is cooling the line would be a negative slope from some initial value

Answer 5

Ohh ok , I believe its D .... am i right ? @agreene

Answer 6

right

Answer 7

Thanks alot @agreene