Alexis is a scientist who is studying solid-state physics. Which activity would she most likely do as a part of this research?
identifying the optimal vessel for containing carbon dioxide
studying the atomic structure of solid carbon dioxide
determining the effect of pressure on the volume of carbon dioxide
observing the natural state of carbon dioxide
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Determining the effect of pressure on the volume of carbon dioxide.

Explanation:

Identifying the optimal vessel for containing carbon dioxide is an activity that the knowledge gap will naturally be closed after determining the effect of pressure on the volume of carbon dioxide. Also, studying the atomic structure of solid carbon dioxide is not a possible activity because CO₂ is not solid, CO₂ is gas. To observe the natural state of CO₂ is a study that the knowledge gas has been closed and factual.

  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