PLEASE HELP!!! The ball moves along a flat surface. Then it moves forward down a hill, and then
finally stops.
The ball doesn't move at first. Then it moves forward down a hill and finally stops.
The ball is moving at constant velocity. Then it slows down and stops.
The ball doesn't move at first. Then it moves backwards and then finally stops.
The ball moves along a flat area, moves backwards down a hill and then it keeps
moving

  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

e

explanation:

there is no change in the electric potential energy as it is in rest on both conditions.

gravity

explanation: