*6. An atom has 54 protons, 77 neutrons, and 54 electrons. What is the charge of the atom's nucleus? Highlight the keywords in the question
A. +77
B. -77
C. -54
D. +54

Temperature and kinetic energy are proportional. a) adirectly b) directly c) indirectly

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.