Ametal conduit will be used as a pathway for wiring through a concrete block. the conduit is a 4 foot long rod with an outer diameter of 2.2 inches and an inner diameter of 2 inches. what is the volume of metal in the conduit in cubic centimeters?

The volume of a cylindrical conduit,

where is the inner radius, is the outer radius, h is the length.

First of all, we would covert each parameter into centimeters.

length of the conduit,

outer radius,

inner radius,

Insert the values in the volume formula,

Hence, the volume of metal in the conduit is 510. 12 cubic centimeters.

  the grams     of oxygen gas   that can be produced     is 20.6   grams of o₂

calculation

2liclo₃ →   2 licl + 3 o₂

step 1:   find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5   +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281   moles

step 2:   use the   mole ratio   to calculate the moles of o2

from equation above, liclo₃: o₂   is 2: 3  

therefore the moles of   o₂=0.4281 moles x3/2 =0.6422   moles

step 3: find mass   of o₂

mass= moles x molar mass

from periodic table the   molar mass of   o₂ = 16 x2= 32 g/mol

mass=0.6422   moles   x   32 g/mol = 20.6 grams of o₂