Nickel carbonyl, Ni(CO)4 is one of the most toxic substances known. The present maximum allowable concentration in laboratory air during an 8-hr workday is 1 ppb (parts per billion) by volume, which means that there is one mole of Ni(CO)4 for every 109 moles of gas. Assume 23?C and 1.00 atm pressure. What mass of Ni(CO)4 is allowable in a laboratory that is 14ft X 22ft X 9ft ?

The mass of allowable in the laboratory is 4599.5 grams

Explanation:

To calculate the volume of cuboid, we use the equation:

where,

V = volume of cuboid

l = length of cuboid = 14 ft

b = breadth of cuboid = 22 ft

h = height of cuboid = 9 ft

Putting values in above equation, we get:

    (Conversion factor:  

To calculate the moles of gas, we use the equation given by ideal gas which follows:

where,

P = pressure of the gas = 1.00 atm

V = Volume of the gas = 78503.04 L

T = Temperature of the gas =

R = Gas constant =

n = number of moles of hydrogen gas = ?

Putting values in above equation, we get:

Applying unitary method:

For every 109 moles of gas, the moles of present are 1 moles

So, for 3230.4 moles of gas, the moles of present will be =

To calculate the number of moles, we use the equation:

Moles of = 26.94 moles

Molar mass of = 170.73 g/mol

Putting values in above equation, we get:

Hence, the mass of allowable in the laboratory is 4599.5 grams

it is the most commonly accepted one