The law of conservation of mass states that mass is neither created nor destroyed during a chemical reaction. This can be gleaned from the third postulate in Dalton's series. Magnesium oxide decomposes into magnesium and oxygen. If 16.12 g of magnesium oxide decomposes to form 9.72 g of magnesium, what mass of oxygen gas is also released in the reaction?
Answers
Answer : The total mass of oxygen gas released in the reaction will be, 12.8 grams
Explanation :
Law of conservation of mass : It states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.
This also means that total mass on the reactant side must be equal to the total mass on the product side.
The balanced chemical reaction will be,
According to the law of conservation of mass,
Total mass of reactant side = Total mass of product side
Total mass of = Total mass of
or,
Total mass of = Mass of
+ Mass of
As we are given :
Total mass of = 16.12 grams
The mass of = 9.72 grams
So,
Total mass of = Mass of
+ Mass of
Therefore, the total mass of oxygen gas released in the reaction will be, 12.8 grams
Final answer:
The law of conservation of mass states that the total mass remains constant before and after a chemical reaction. In the decomposition of magnesium oxide into magnesium and oxygen, the mass of oxygen gas released can be found by subtracting the mass of the substance after the reaction (magnesium) from the mass before the reaction (magnesium oxide), resulting in 6.40 g of oxygen gas.
Explanation:
The question pertains to the law of conservation of mass, which states that mass is neither created nor destroyed. It is also linked to the third postulate in Dalton's series. In the case of magnesium oxide decomposing into magnesium and oxygen, you can use this law to solve the problem.
If 16.12 g of magnesium oxide decomposes to 9.72 g of magnesium, this means that the rest of the mass must be the oxygen gas released. The mass of the magnesium oxide (16.12 g) minus the mass of the magnesium (9.72 g) gives the mass of the oxygen gas. Therefore, the mass of oxygen gas released is 16.12 g - 9.72 g = 6.40 g.
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The dispersion force and the dipole force has been the attractive forces that result in the formation of bond within the molecules and result in the change in the properties of the compounds.
The dipole force is a strong force and results in a higher boiling point.
The statements regarding the forces are:
(a) For molecules with similar molecular weights, the dispersion forces become stronger as the molecules become more polarizable.
The statement is true.
(b) For the noble gases the dispersion forces decrease while the boiling points increase as you go down the column in the periodic table.
The statement is true.
(c) In terms of the total attractive forces for a given substance, dipole-dipole interactions, when present, are always greater than dispersion forces.
The statement is false.
(d) All other factors being the same, dispersion forces between linear molecules are greater than those between molecules whose shapes are nearly spherical.
The statement is true.
For more information about the dispersion force, refer to the link:
Answer:
A ,B- false
C,D- true
Explanation:
Dipole forces always lead to stronger attraction and boiling points than dispersion forces. When linear molecules are involved, they often posses greater dipole forces and higher boiling points. Linear alkanes posses higher boiling points than branched alkanes.
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Explanation:
carbonic acid - H2CO3 - is a weak acid. Therefore, HCO3 itself is its conjugate base. The Na(sodium) ion is neutral.
This means that NaHCO3 is a base. (a weak one)
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The euglena's red eyespot is used for detection of light.
Answer:
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Explanation:
Answers
Answer:
201.6 grams is the mass of 6.3 moles of sulfur.
Explanation:
Moles of sulfur ,n= 6.3 moles
Atomic mass of sulfur = M = 32 g/mol
Mass of the sulfur = m = ?
201.6 grams is the mass of 6.3 moles of sulfur.
The mass of 6.3 moles of Sulfur is 32×6.3=201.6 grams
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