Anet force of 10.0 n causes an object to accelerate at 2.00 m/s^2. what is the mass of the object? 0.200 kg 0.400 kg 5.00 kg 8.00 kg 20.0 kg

The mass of the object is 5 kg.

Explanation:

Let F be the net force acting on the object and a be the acceleration of the object, given m is the mass of the object then by Newtons second law of motion:

F = m×a

m = F/a

   = (10)/(2)

   = 5 kg

Therefore, the mass of the object is 5 kg.

  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