The drawing shows robin hood about to escape from a dangerous situation. with one hand, he is gripping the rope that holds up a chandelier . when he cuts the rope where it is tied to the floor, the chandelier will fall, and he will be pulled up toward a balcony above. ignore the friction between the rope and the beams over which it slides, and find (a) the acceleration with which robin is pulled upward and (b) the tension in the rope while robin escapes.

the diagram which shows forces as either balanced = same speed or unbalanced = accelerarting

  1.the balanced   chemical equation is as below

cu +   2 ag(no)₃ → cu(no₃)₂   +2 ag

2.the   much silver   produced   is   50.9 g

step 1: find the   moles of cu

moles =   mass÷   molar mass

  from periodic table the molar mass of cu = 63.5 g/mol

moles is therefore = 15.00 g÷ 63.5 g/mol = 0.236   moles

step 2: use the mole ratio to determine the   moles of ag

from equation above   cu: ag   is 1: 2

therefore the moles of ag   =0.236   moles   x 2/1 =0.472   moles

step 3: find the mass   of ag

mass = moles x molar mass

from periodic table   the molar mass of ag =107.87 g/mol

mass   = 0.472   moles x 107.87 g/mol = 50.9 g

3.   the   much   silver   collected worth is   1.797 oz

  convert   50.9 g   to oz

that is   1 gram = 0.0353 oz

          50.9 grams =?   oz

by cross multiplication

={(50.9 grams x 0.0353 oz) / 1   gram}   =1.797 oz

ill do it for 100, also this isnt 80 its 40

it takes about 30 days for it to break down