Answer:
A
Explanation:
Metal atoms are held together by metallic bonds. The metallic bonds are composed of a lattice of positive ions in a 'sea of electrons'.
The metal atoms are held together by strong electrostatic attraction between the positive ions and the 'sea of electrons' leading to high melting point of metals including copper.
Similarly, when a metal undergoes stress, the layers of the metal roll over each other but the lattice remains in place. Hence for metals such as Copper, layers of atoms in the lattice can slide over each other thereby making the metal malleable.
Metals oxidize by electron loss. Since Copper is metal, it can also be oxidized to form copper ions by loosing electrons.
Answer:
0.75 M
Explanation:
Molarity = moles of solute / liters of solution
so;
Molarity =
Q=mCdeltaT
Q=(640)(0.09)(375-26)
Q=20102.4J
The question is incomplete. complete question is;
A 0.10 mol sample of each of the four species in the reaction represented above is injected into a rigid, previously evacuated 1.0 L container. Which of the following species will have the highest concentration when the system reaches equilibrium?
a.
b.
c.
d.
Answer:
The correct answer is option a.
Explanation:
The equilibrium constant of the reaction=
Concentration of the species initially:
The equilibrium quotient of the reaction is :
(reaction will go backward)
Initially
0.10 M 0.10 M 0.10 M 0.10 M
At Equilibrium :
(0.10+2x) M (0.10+x) M (0.10-x) M (0.10-4x) M
Solving formx:
x = 0.099 M
As we can see that from the reaction at equilibrium, the concentration of hydrogen sulfide will be highest:
Answer: False
Explanation: The kinetic energy of the molecules is the energy possessed by virtue of motion of particles.
Kinetic energy of the particles is directly proportional to the temperature of the gas.
where T= temperature
R= gas constant
Thus if the particles are moving faster that means the kinetic energy is high, the temperature must be higher and the particles must feel hot to touch.