A double replacement chemical equation is shown. __MnO2 + __HCl → __MnCl2 + __H2O + __Cl2 What values should be inserted into the blanks as coefficients to ensure the preservation of the law of conservation of matter? (1 point) Responses 1,4,1,2,1 1,4,1,2,1 2,3,1,2,1 2,3,1,2,1 2,4,2,4,1 2,4,2,4,1 1,2,1,2,1
To ensure the preservation of the law of conservation of matter, the coefficients should be inserted into the blanks as follows: 2, 4, 2, 4, 1.
among the following equations, which one is in a balanced state?(1 point)
Responses
C3H8 + 5 O2 → 3 CO2 + 4 H2O
C 3 H 8 + 5 O 2 → 3 CO 2 + 4 H 2 O
2 C3H8 + 4 O2 → 2 CO2 + 4 H2O
2 C 3 H 8 + 4 O 2 → 2 CO 2 + 4 H 2 O
C3H8 + 11 O2 → 3 CO2 + 8 H2O
C 3 H 8 + 11 O 2 → 3 CO 2 + 8 H 2 O
C3H8 + 3 O2 → CO2 + H2O
C 3 H 8 + 3 O 2 → CO 2 + H 2 O
The balanced equation among the given options is: 2 C3H8 + 4 O2 → 2 CO2 + 4 H2O.
The chemical equation provided signifies a nuclear reaction.
What is the most accurate description for this particular type of reaction?
(1 point)
Responses
Fusion is indicated as the reaction involves the creation of heavier nuclei.
Fusion is indicated as the reaction involves the creation of heavier nuclei.
Fusion is indicated as the reaction led to the creation of lighter nuclei.
Fusion is indicated as the reaction led to the creation of lighter nuclei.
Fission is indicated since the reaction resulted in the formation of heavier nuclei.
Fission is indicated since the reaction resulted in the formation of heavier nuclei.
Fission is suggested as the reaction resulted in the formation of lighter nuclei.
The most accurate description for a nuclear reaction that involves the creation of heavier nuclei is Fusion is indicated as the reaction involves the creation of heavier nuclei.
To determine the coefficients that should be inserted into the blanks to preserve the law of conservation of matter in a double replacement chemical equation, you need to balance the equation by ensuring that the number of atoms of each element is equal on both sides.
Let's go through the options:
- Option 1,4,1,2,1: This option suggests that there is one MnO2, four HCl, one MnCl2, two H2O, and one Cl2. However, this doesn't balance the equation because there are four chlorine atoms on the left side but only two on the right side.
- Option 2,3,1,2,1: This option suggests that there are two MnO2, three HCl, one MnCl2, two H2O, and one Cl2. This also does not balance the equation because there are three chlorine atoms on the left side but only one on the right side.
- Option 2,4,2,4,1: This option suggests that there are two MnO2, four HCl, two MnCl2, four H2O, and one Cl2. This balances the equation because there is an equal number of atoms of each element on both sides.
Therefore, the correct option is 2,4,2,4,1, as it maintains the law of conservation of matter.