The mass of density bottle is 18kg when epmty ,44kg when full of water and 39.84 when full of second liquid . Calculate density of liquid

None. nothing. zero. zilch.

In atoms, the electron carries a negative elementary or unit charge; the proton carries a positive charge. the two types of charge are equal and opposite. in an atom of matter, an electrical charge occurs whenever the number of protons in the nucleus differs from the number of electrons surrounding that nucleus.

Answer would be