If you go to the moon, what will happen to your weight and mass?
1 answer:
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Answer: I. The number of molecules is conserved.
III. Atoms are neither created nor destroyed
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products formed must be equal to the mass of reactants taken.
In order to get the same mass on both sides, the atoms of each element must be balanced on both sides of the chemical equation.
For example:
Thus in the reactants, there are 4 atoms of hydrogen , 2 atoms of oxygen and 2 atoms of sodium.Thus there will be 4 atoms of hydrogen, 2 atoms of oxygen and 2 atoms of sodium in the product as well.
Answer: The mass of 405 mL of ethylene glycol is 444.3 g.
Explanation:
Density is defined as the mass contained per unit volume.
Given :
Density of the ethylene glycol=
Volume of the ethylene glycol= = 0.405 L (1L=1000ml)
Mass of the ethylene glycol = ?
Putting in the values we get:
Thus the mass of 405 mL of ethylene glycol is 444.3 g