Please help me find the volume!!!!?

The difference in the weight of the flask full and empty is the m of the water that just fills the flask, so you need to look up the densitry of water and divide the weight of contained water by the density of water to get the volume of that water. Since the volume of the water = the volume of the flask you now got the volume of the flask. Note: for best accuracy, don't just ume density of water is 1g/ml; you need to know the temperature of the water and should look up the density in a reference where they give quite exact density vs temperature tables (such as the CRC Handbook).