Answer: 
Explanation:
To calculate the moles, we use the equation:
Given mass of theobromine 
= 0.064 g
Molar mass of theobromine 
Answer:
1) If the volume of a container is increased, the temperature increases.
2) If the volume of a container is decreased, the temperature decreases.
Explanation:
This means that the volume of a gas is directly proportional to its temperature.
In 1869 he published a table of the elements organized by increasing atomic mass.
Mendeleev is called the "father of the modern periodic table
stated that if the atomic weight of an element caused it to be placed in the wrong group, then the weight must be wrong. (He corrected the atomic masses of Be, In, and U)
was so confident in his table that he used it to predict the physical properties of three elements that were yet unknown.
After the discovery of these unknown elements between 1874 and 1885, and the fact that Mendeleev's predictions for Sc, Ga, and Ge were amazingly close to the actual values, his table was generally accepted.
However, in spite of Mendeleev's great achievement, problems arose when new elements were discovered and more accurate atomic weights determined.
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Answer:
- <em><u>2I ⁻ → I₂ + 2e⁻</u></em> describes the <em><u>oxidation.</u></em>
- <u><em>Cl₂ + 2e⁻ → 2Cl ⁻</em></u> describes the <u><em>reduction</em></u>.
Explanation:
<em>Oxidation-reduction reaction</em> is the simulaneous oxidation and reduction of the substances and is represented by two half-reactions.
The <em>oxidation</em> half-reaction is the loss of electrons, with the consequent increase in the oxidation state by the oxidized substance.
In this case, the process that shows the loss of electrons is:
That reaction shows:
- Two I⁻ ions lose two electrons (one each) to be oxidized to I₂.
- The change in the oxidation number is from -1 to 0.
- Hence this half-reaction is the oxidation reaction.
On the other hand, the <em>reduction</em> half-reaction is the gain of electrons, with the consequent reduction of the oxidation state by the reduced substance.
In this case, the process that shows the gain of electrons is:
That reaction shows:
- Two Cl atoms gain two electrons (one each) to be reduced to Cl⁻.
- The change in the oxidation number is from 0 to - 1.
- Hence, this half-reaction is the reduction reaction.
<u>Summary:</u>
- <em>2I ⁻ → I₂</em> + 2e⁻ describes the oxidation.
- <em>Cl₂ + 2e⁻ → 2Cl ⁻</em> describes the reduction.
Answer:
The strong refers to how dangerously powerful the solution is
