3. Un automóvil tiene una masa de 1000kg. ¿Cuál es su peso?

A) 9.81x10^3N
B) 1.89x10^3N​

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

How are positive ions different from neutral atoms

What is the change in internal energy if 20 j of heat is released from a system and the system does 50 j of work on the surroundings? a. -70 j b. 30 j c. -30 j d. 70 j