Answer: 39 electrons
Explanation: Subtract 79 by 40 to get the atomic number (amount of protons) which is 39. The number of electrons must be the same as the number of protons if it's not an ionic compound so the amount of electrons is the same amount of protons.
Alll are correct. Matter is literally everywhere
The answer is light years
Mass = 90.0 g
Density = 0.70 g/mL
Volume = in mL ?
D = m / V
0.70 = 90.0 / V
V = 90.0 / 0.70
V = 128.57 mL
Technology of course and Pliers make work easier by holding parts. By gripping small things in awkward locations.
