Answer:
656,25 moles of CH3OH
Explanation:
If the mixture has 7% of weight in methanol (CH3OH), it means that for every 100 kg of the mixture there are 7 kg of methanol.
To solve the problem we just use this relation and convert the kilograms of methanol to gmoles of methanol using the molecuar weight of the methanol (32g/mol):
2 would be the correct answer
Answer:
the atom
Explanation:
The bread and cheese separately represent the atom because both bread and cheese are different from one another and we cannot assume it as a molecule because molecules formed when the group of atoms combine together by making bonds with each other and we know that bread and cheese did not make bonds with each other, they only attached, so we called them atoms not molecule.
Answer:
- <em>A potassium atom </em><em><u>loses one electron</u></em><em> and forms </em><em><u>one</u></em><em> ion.</em>
- <em>A sulfur atom </em><em><u>gains two electrons</u></em><em> and forms </em><em><u>one</u></em><em> ion.</em>
Explanation:
Indeed, in virtue of their electron configuration, metals can react with nonmetals by the former donating one or more electrons, from their valence electron shell, which the latter can accept.
The reaction in which a metal loses electrons and forms a positive ion (cation), while a nonmetal gains those electrons and forms a negative ion (anion) is the formation of a ionic compound, which is a chemical reaction.
The chemical reactions happen in virtue of sharing, accepting or donating electrons, mainly from the valence electron shells of the atoms. Protons and neutrons are not exchanged, loss or gained in chemical reactions. The reactions in which protons and neutrons can take part are nuclear reations (not chemical reactions).
<em>Potassium</em> (Z = 19) has one valence electron, so it can lose it to form the cation K⁺, with one positive charge; while <em>sulfur</em> (Z = 16) has 6 valence eletrons, making it possible for it gaining two electrons to form the anion S²⁻.
Then, each S²⁻ ion can combine with two K⁺ ions to form the ionic compound, K₂S, potassium sulfide. See that two potassium atoms combine with one sulfur atom to form one unit of the ionic compound.