Liên kết nào là cộng hóa trị không phân cực : Select one:
A.
liên kết N-N trong N2

B.
liên kết H-S trong H2S

C.
liên kết P-Cl trong PCl3

D.
liên kết H-I trong HI

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

How many neutrons does an element have if its atomic number is 50 and its mass number is 166

Calculate the mass of 0.750 mol of the following substance. na3po4.