An airplane flies 1980 km in 2.75 hours. What is its average speed in
kilometers per hour?

Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? question 7 options: the heat from the hot water is conducted through the spoon handle the hot water heats the air surrounding the upper part of the spoon. the hot water causes a physical change in the spoon handle. the hot water causes a chemical reaction to take place in the spoon.

What is the mass of 8 moles of sodium atoms

Can someone me with 3 and 4 plz. this is for masteries test.