7. A dynamo coil rotates 4200 rotation per minute in a magnetic flux of flux density 0.05 Tesla. If the number of turns of the coil is 100 turns and the area of each of them is 25
cm?. Calculate:
A. The maximum value of the e. m.f.
B. Its effective value
C. The instantaneous value of the e. m.f. when the coil rotates 1/12 rotation from the
perpendicular plane

Can anyOne solve No. C ?

  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

a. are

your answer is, orbit around the nucleus