How much energy is released during the formation of 50.0 g of cu, according to the reaction below?

The table lists pressure and volume values for a particular gas. which is the best estimate for the value of v at p = 7.0 × 103 pascals?

If a 12-v battery is connected to a circuit that has a current of 3.0 a, what is the total resistance in the circuit? 36 ohms 4 ohms 0.25 ohms

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?