1Cu + 2 AgNO3- 2Ag +1Cu(NO3)2 b. If you have 0.4 moles of Cu (s) how many moles of AgNO, do you need?

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

16

explanation:

the marks go by 4s

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.