Which of the following is a heterogenous mixture? A. A fruit salad
B. A hot cup of coffee
C. A milk chocolate bar
D. Hot tea

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

The pressure inside a hydrogen-filled container was 2.10 atm at 21 ? c. what would the pressure be if the container was heated to 92 ? c ?

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains