Which statement is generally true about cacl2?
it has only metallic bonds between the atoms.
it has only covalent bonds between the atoms.
its bonds are formed by large differences in electronegativity.
its bonds are formed by small differences in electronegativity.

Answer;

Its bonds are formed by large differences in electronegativity.

Explanation.

-Calcium chloride is an example of ionic compound that results from the transfer of electrons between calcium atom and chlorine atoms.

-Ionic bonding involves the transfer of electrons between atoms.These types of bonds require at least one electron donor and one electron acceptor. Conversely, in covalent bonds,atoms that have the same electronegativity share electrons because donating or receiving electrons is unfavorable.

-Therefore, ionic bonds are formed as a result of large differences in the electronegativity of the atoms involved.

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j

the dependant variable is spilled water

the independent is the heat