What element contains 66 electrons

In part D of the experiment, a student begins with a beaker containing 10.0 mL of 0.010 M HCl solution and adds different volumes of 0.010 M NaOH.

Balance the equation C2H6O + O2 = Co2 + H2O

For the reaction 2Na + Cl2 → 2NaCl, how many grams of chlorine gas are required to react completely with 57.5 mol of sodium?

Equal amounts of methylene blue (319.85 g/mol) and potassium permanganate (158.034 g/mol) dyes were added to identical agar plates and allowed to diffuse. After 24 hours, the halo was measured to see how far the dyes had moved.

A boy fell off a 100 foot ladder. But he did not get hurt. Why not?

Which of these is a property of bases? They produce hydrogen gas when reacted with metals. They turn litmus paper blue. They feel sticky. They taste sour.

After Pangaea broke up, North America became part of what?

What the different betwen observe and reference

How many moles are in 12.5 g of H2O

How do the atomic number and the number of protons relate to one another? The atomic number tells us the number of protons The atomic number is protons + neutrons They do not Electron Cloud