What mass of silver oxide, ag2o, is required to produce 25.0 g of silver sulfadiazine, agc10h9n4so2, from the reaction of silver oxide and sulfadiazine?

Step  one write  the chemical   equation  for  reaction
=  Ag2O  +  2(C10H10N4SO2)---> 2 ( AgC10H9N4SO2)

The   reacting  ratio  of  Ag2O  to  AgC10H9N4SO2  is  1:2  from   the  reaction  above
    
step  2;  find  the  number  of  moles  of  AgC10H9N4SO2
that is  mass/molar  mass
The  molar  mass  of  AgC10H9N4SO2  =  107.86  +(12 x10) + (1 x 9) +  (4 x  14) +32 +(16 x2) =356.86g/mol
moles  is  therefore=  25g/356.86g/mol=  0.07moles

by  use  of  mole  ratio  the  moles   of  Ag2O=  0.0702=0.035moles
mass  =  moles x  molar  mass
the  molar  mass  of  Ag2O=231.72 g/mol
mass  is therefore=  231.72g/mol  x  0.035moles= 8.11grams

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .