Which of the following statements is true about tides? (2 points) tides are caused only by the moon. tides are not caused by the moon. tides are caused by the location of the earth, sun, and moon. the sun is not involved in causing tides. 2- which statement is true? (2 points) tides occur about an hour later each day. tides occur at the same time each day. tides occur about an hour earlier each day. tides do not happen at set times. 3- how much does the sun influence tides on earth? (2 points) several times as much as the moon twice as much as the moon about as much as the moon half as much as the moon

  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