What is the oxidation number for N in the compound NH3? (Recall that H usually has an oxidation number of 1. ) –3 –1 0 3.

There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?