The movement of the lithospheric plates changes the number of continents on Earth. This change would be seen over

A.

centuries.

B.

millions of years.

C.

decades.

D.

thousands of years.

Wich substances is most likely to form in a precipitation reaction?

Object A at 40.°C and object B at 80.°C are placed in contact with each other. Which statement describes the heat flow between the objects? (1) Heat flows from object A to object B. (2) Heat flows from object B to object A.

What force is necessary to change an object's motion?

What element must combine with the metal for oxidation to take place?

The temperature on Mercury may drop to - 263 °F at night. What is this temperature in degrees Celsius?

Preteins vary widely in structure, whereas nucleic acids have rather uniform structures. How do you account for this major difference?

Convert the pressure 0.840 atm to mm Hg

What is the temperature in Celsius of 308 K?

Why does metal need to be extracted from an ore before it can be used?

If heat is released, how does the solution feel?