Answer:
1. The oxidation state of all the atoms should change
2. 10
Explanation:
Redox reactions are reactions in which one specie is reduced and another specie is oxidised simultaneously. Such reactions involves the transfer of electrons, that is, one specie loses electrons and the other accepts the lost electrons.
In a redox reaction, there is an increase in oxidation number of an atom that undergoes oxidation and a decrease in oxidation number for atoms that undergoes reduction.
2. There would 10 oxygen on the product side of the reaction.
In balancing chemical equations, the law of conservation of matter is usually followed. The law states that "matter is neither created nor destroyed in the course of a chemical action". This implies that the total mass of the reacting substance is exactly equal to the total mass of the products. This laws simply shows that every atom on the product end must be accounted for on the reactant side.
The equation which shows the combustion of propane would yield carbondioxide and water with the total number of oxygen atoms on the product end being 10.
Answer:
The pH scale is used to rank solutions in terms of how acidic or how basic they are. ... This pH value of 7 is important because it indicates a neutral solution. All other substances are compared to this neutral point. Any solution that has a pH of less than 7 is considered acidic, and anything above a pH of 7 is basic.
Explanation:
Answer:
a. 7.75 × 10²² molecules
b. 1.59 × 10²⁷ molecules
c. 6.41 × 10¹⁷ molecules
Explanation:
There are 7.11 × 10²⁴ molecules in 100.0 cm³ of a certain substance. We will use this ratio in our conversion fractions.
<em>a. What is the number of molecules in 1.09 cm³ of the substance?</em>
1.09 cm³ × (7.11 × 10²⁴ molecules/100.0 cm³) = 7.75 × 10²² molecules
<em>b. What is the number of molecules in 2.24 × 10⁴ cm³ of the substance?</em>
2.24 x 10⁴ cm³ × (7.11 × 10²⁴ molecules/100.0 cm³) = 1.59 × 10²⁷ molecules
<em>c. What number of molecules would be in 9.01 × 10⁻⁶ cm³?</em>
9.01 × 10⁻⁶ cm³ × (7.11 × 10²⁴ molecules/100.0 cm³) = 6.41 × 10¹⁷ molecules
It would be a whale cause they have the highest density