17. What is the total number of molecules in a 0.5-mole sample of He gas?
A) 6 x 10^23
B) 2 x 10^23
C) 3 x 10^23
D) 4 x 10^23

How do scientists think that gravity affected the formation of our solar system?

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

What is the binding energy of a nucleus that has a mass defect of 5.81*10-^29 kg a 5.23*10-^12 j b 3.15* 10^12 j c 1.57*10-3 j d 9.44*10^20 j