The pressure at 99 feet below the surface of the ocean is: greater than the pressure at sea level greater than the pressure 33 feet below the surface about 59 pounds per square inch all of the above

 all of the above

Explanation:

The pressure increases as we go down into the ocean.

Thus pressure at 99 feet below the surface of ocean is greater than the pressure at sea level.

Also the pressure at 33 feet below the surface of ocean is greater than the pressure at 99 feet below the surface of ocean.

The weight of the atmosphere exerts a pressure of 14.7 pounds per square inch of force at sea level which is also equal to 1 atmosphere.At depth of 99 feet , the pressure exerted is 4 atm which is almost equal to 59 pounds per square inch.

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.  

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.