How many grams of methane should he burned in an excess of oxygen at stp to obtain 5.6 l of carbon dioxide

Ineed ! it’s science and it’s due tomorrow!

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device

You open a can of soda at room temperature and hear a hiss. which of the following factors has changed inside the container? a.) atmospheric pressure b.) temperature of gas c.) type of gas d.) amount of gas