What’s a covenant bond

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.

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.