Answer:
25.0%
A solution of benzene (C6H6) and toluene (C7H8) is 25.0% benzene by mass. At 25 °C the vapor pressures of pure benzene and pure toluene are 94.2 torr and 28.4 torr, respectively.
In my opinion, the correct answer among the choices presented above is option C. <span>A material is nonmagnetic and gaseous and does not conduct heat or electricity. It will, however, react with other elements. It is most likely a nonmetal.</span>
Answer:
C. It has no delocalised electrons and each carbon atom forms four covalent bonds with other carbon atoms.
Explanation:
- Diamond is composed solely by carbon atoms. As the difference of electronegativity between atoms is 0, diamond is a <em>fully covalent compound</em>.
- The lack of electrical conductivity stems from a<em> lack of available electrons</em>, this means that there are no delocalised electrons.
The information in the first point discards options A and D, while the second point discards option B. Thus the answer is option C.
Bonding goes to d sublevel i think??
Answer:
C. Fe will stay positive and increase in magnitude.
Explanation:
Coulomb's law states that the force of attraction of repulsion between two charged particles is directly proportional to the magnitude of their charges and inversely proportional to the square of the distance of separation between them.
This means that if the size of the charges are large, the force acting on them will be large as well. Also if the distance between the two charges increases the force decreases. However, the force increases when the distance of separation decreases.
Like charges repel, therefore, two negative charges brought together will repel each other, and the distance between the two charges decreases, the force will increase in magnitude. Forces of repulsion are considered positive, therefore, the force, Fe, will stay positive and increase in magnitude.