When 100 mL of 0.100 M NaCl(aq) and 100 mL of 0.100 M AgNO3(aq), both at 21.9 °C, are mixed in a coffee cup calorimeter, the temperature increases to 22.7 °C as solid AgCl forms. How much heat
is produced by this precipitation reaction?

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the farther away a galaxy is from us, the faster it is moving away from us.

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).