Asingle point charge is placed at the center of an imaginary cube that has 10 cm long edges. the electric flux out of one of the cube's sides is -1 kn·m^2/c. how much charge is at the center?

Explanation:

Given:

Length of each side of the cube,

The Elecric flux through one of the side of the cube is,

The net flux through a closed surface is defined as the total charge that lie inside the closed surface divided by

Since Flux is a scalar quantity. It can added to get total flux through the surface.

So the the charge at the centre is calculated.

  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

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas