Aworker standing on a freshly mopped floor is adjusting products on a metal shelf. there is an exposed wire in contact with the shelving. what is this an example of?
select the best option.
a) contacting overhead power lines
b) contacting energized sources

B) Contacting Energized Sources

Explanation:

A worker standing on a freshly mopped floor is adjusting products on a metal shelf. There is an exposed wire in contact with the shelving. What is this an example of?

Select the best option.

A) Contacting Overhead Power Lines

B) Contacting Energized Sources

the source which is in contact with the metal and that is in contact  with the worker. Note that the worker's body conducts electric charges and then in contact with a wet floor . the floor will certainly conduct electricity

this is an example of contacting an energized source and not contacting overhead power lines as there are no such case in the scenario stated

  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