Answer:
may or may not be equal to the number of moles of the products.
Explanation:
A chemical reaction involves the interaction between reactants to yield products. The number of moles of reactants and products in the system depends on the stoichiometry of the reaction.
The balanced reaction equation shows us the number of moles of reactants and products involved in the reaction.
Hence, in the balanced chemical reaction equation; the number of moles of reactants may or may not be equal to the number of moles of the products.
Answer:Chemical bonds link elements together to form more complex molecules called compounds. A compound consists of two or more types of elements held together by covalent or ionic bonds. Elements cannot be divided into smaller units without large amounts of energy.
Answer:
b. Iron forms complexes with molecular oxygen in proteins like hemoglobin and myoglobin
c. Iron rusts readily in moist air.
d. Iron powder dissolves in an acidic solution with the evolution of a gas.
Explanation:
The chemical properties of an element is the property of the element that is being noticed during or after a chemical reaction. The chemical properties can only be observed when the chemical composition of the compound is about to be changed or is changed. From the question the propeties that are chemical are:
Iron forms complexes with molecular oxygen in proteins like hemoglobin and myoglobin
Iron rusts readily in moist air.
Iron powder dissolves in an acidic solution with the evolution of a gas.
The remaining properties are physical properties (they can be measured and shows the physical state)
Answer:
C. Decreasing the temperature of the system.
Explanation:
Decreasing the temperature of the system increases the chance of a reaction when two molecules collide.