Calculate the volume of Oxygen produced ( measured at room temperature and pressure) during the electrolysis of Sodium sulphate solution if you use a current of 0.5amp for 30 minutes

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:

Type the letter that represents the correct location for each particle type below.

Suppose a lab group reports a ppercent yield of sand of 105. is it really possible to collect more sand than was originally represented? what is the possible explanation for the extra product?