A diagram of a closed circuit with power source on the left labeled A, a circle on the top part of the circuit with an X in it labeled B, a resistor on the right labeled C and on the bottom of the circuit is a switch labeled D and a circle with an X in it.
Use the drop-down menus to identify the parts of the diagram

A. Battery

B. Bulb

c. Resister

D. Closed Switch

Explanation:

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

  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