Atmospheric scientists often use mixing ratios to express the concentrations of trace compounds in air. mixing ratios are often expressed as ppmv (parts per million volume): ppmv of x 5 vol of x at stp 3 106 total vol of air at stp on a certain november day, the concentration of carbon monoxide in the air in downtown denver, colorado, reached 3.0 3 102 ppmv. the atmospheric pressure at that time was 628 torr and the temperature was 08c.
a. what was the partial pressure of co?
b. what was the concentration of co in molecules per cubic meter?
c. what was the concentration of co in molecules per cubic centimeter?

a)

b)

c)

Explanation:

a) The partial pressure of CO₂ is given by:

Since the molar fraction of the gas is directly proportional to the volume of the gas, the molar fraction is given by:

Hence,

b) Using the Ideal Gas Law, we can find the number of moles of CO₂:

where:

The concentration of CO in molecules per cubic meter is:

c) The concentration of CO in molecules per cubic centimeter is:

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.  

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante