Consider the same cup of coffee sitting on the same table in

Consider the same cup of coffee sitting on the same table in the following four situations. In which situation does the cup of coffee have the greatest mass and in which the smallest mass? (a) The coffee is hot (95°C), and the table is at sea level. (b) The coffee is cold (60°C), and the table is at sea level. (c) The coffee is hot (95°C), and the table is on a mountain top. (d) The coffee is cold (60°C), and the table is on a mountain top.

(a) has the smallest mass; (b) has the greatest mass

(c) has the greatest mass; (b) has the smallest mass

(b) has the greatest mass; (d) has the smallest mass

(a) has the greatest mass; (b) has the smallest mass

Solution

(b) has the greatest mass and (c) has the smallest mass.

Because when the coffe is cold (cold coffe is more compact than the hot one , so there will be more mass in same volume than the hot one) and it is at sea level ,there are more pressure than mountain top, so more pressure will compact the coffe more and there will be more mass in same volume.