A solute is the substance to be dissolved for example sugar
The solvent is the one doing the dissolving for example water
A redox reaction is a combination of an oxidation reaction and a reduction reaction, this reaction involves the transfer of electrons from one species to another. When redox reactions are shown as half reactions you are able to determine what parts of the reaction are being reduced and what is being oxidized. Moreover, you are able to determine if the reaction is spontaneous or not once you see the half reactions. When an element loses an electron in a reaction it is considered to be oxidized however if it gains an electron or multiple electrons then it is reduced. In other words, if the oxidation number increases then it is losing electrons and therefore it is oxidized but if the number is decreasing then it is gaining electrons. Note that electrons have negative charges so this trend only makes sense because of this fact.
The number of moles of carbon dioxide is 0.05 mol.
A molecule of CO2 contains one carbon atom and two oxygen atoms. One mole of CO2 contains one mole of carbon atoms and two moles of oxygen atoms. The mass of one atomic mole of an element equals the atomic mass in grams, and the molecular mass of an element or compound equals the sum of the atomic masses of each type of its constituent atoms.
Therefore, the mass of one mole of a molecule of an element or compound equals its molecular weight in grams. The number of grams in moles depends on the substance you have. To calculate it, find the atomic or molecular mass of the substance and multiply it by the number of moles.
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