1 If u melt 100 g of ice will u get the same mass of water 2 Which - Science - Atoms and Molecules

Question

1 If u melt 100 g of ice will u get the same mass of water?
2 Which of the following rection does not conform to the law of
conversation of mass?
A]BURNING OF CANDLE
B]MELTING OF ICE
C]FUSION REACTION OCCURING IN SUN
D]COMBUSTION OF FUEL
3 In chemical rections how does law of conversation of mass
contribute in writing cnemical equaions?

Kirti Gogia · Accepted Answer

A-1) If we melt 100g of ice, we will get the same mass of water
(that is 100 g) This is in accordance with the law of conservation
of mass, which states that the mass of a closed system will
remain constant in a chemical reaction and physical In other words,
mass can neither be created nor destroyed in a chemical reaction or
a physical reaction
A-2) Fusion reactions occurring in sun often do not follow
the law of conservation of mass In nuclear reactions, generally,
the mass of the products is found to be slightly less than the mass
of reactants This mass is converted into energy according to the
relation E = mc2
where E is the energy, m is the mass and c is the speed of
light
A-3) The law of conservation of mass helps us in
formulating the chemical equations for reactions As the reactants
are completely converted into the products, therefore the law of
conservation of mass helps us in determining the relative amounts
in which the reactants will react with each other to give the
products In simple terms, this law helps in balancing of the
chemical equations