Which of the following happens during a new moon? more than half of the moon is visible from earth. less than half of the moon is visible from earth. the illuminated half of the moon faces towards earth. the illuminated half of the moon faces away from earth.

The illuminated half of the moon faces away from Earth.  

Explanation:

Phase of the moon are the shapes of the moon due to the illuminated visible portion of the Moon as viewed from the Earth. The New moon phase occurs when the moon lies in between the Sun and the Earth. In such position, the illuminated portion of the moon faces away from the Earth and hence, moon is not visible in the sky.

  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