Which equation represents a single replacement reaction that can occur? o F2 + 2NaCl → 2NaF + Cl2 .Zn + 2NaF → ZnF2 + 2Na o Cl2 + 2NaF → 2NaCl + F2 o Cu + 2NaCl → CuCl2 + 2Na​

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?