Answer:
pH = 6.964 which rounds to 7.0 if 2 sig figs
Explanation:
Ka₁ * Ka₂ = x
2.4x10⁻⁴ * 4.9x10⁻¹¹ = 1.176x10⁻¹⁴
√1.176x10⁻¹⁴ = 1.084435337x10⁻⁷
pH= -log[H⁺]
pH= -log[1.084435337x10⁻⁷]
pH= 6.964796339
An ionic compound is arranged in a organised lattice structre that allows for the greatest electrostatic attraction between the opposite charged atoms and the lesser electrostatic repulsion between the same atoms, where the atoms are as closely packed as possible. So the amount of energy (in form of heat) needed to break the electrostatic attraction between the atoms, so this means that ionic compounds have very high melting points.
False. Solids have a definite shape and volume. Cutting a paper (solid) in half will alter the shape of the original solid and give it a new shape and volume instead. A solid will always have a definite shape. If not, it's not a solid.
Answer: B. Potential energy
Explanation:
There are several form of potential energy including gravitational, magnetic, electrical, chemical and eleastic potential