Question 1 1 pts

Which statement correctly compares an atom of Neon-20 and an atom of Sodium-23?

An atom of neon 20 has one fewer proton and one fewer neutrons than an atom of sodium-23.

An atom of neon-20 has one more proton and two fewer neutrons than an atom of sodium-23.

An atom of neon-20 has one fewer proton and two fewer neutrons than an atom of sodium-23.

An atom of neon-20 has one fewer proton and two more neutrons than an atom of sodium-23.

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride

Percent ionization for a weak acid (ha) is determined by the following formula: percent ionization=[ha] ionized[ha] initial×100%for strong acids, ionization is nearly complete (100%) at most concentrations. however, for weak acids, the percent ionization changes significantly with concentration. the more diluted the acid is, the greater percent ionization.a certain weak acid, ha, has a ka value of 9.4×10? 7.part acalculate the percent ionization of ha in a 0.10 m solution.part bcalculate the percent ionization of ha in a 0.010 m solution

Which of the following is a physical change? a.burning a piece of wood b.sawing a piece of wood in half c.rust forming on an iron fence d.a copper roof changing color from orange to green