In each formula, R stands for the universal gas constant, or 8.3144 J/K mol, T stands for
Kelvin temperature, and M stands for the molar mass, in kg/mol. Hydrogen gas (H) has a
molar mass of 0.002016 kg/mol.
A. Calculate the most probable velocity (vp):
B. Check by turning on Show most probable velocity. Were you correct?
C. Calculate the mean velocity (V):
D. Check by turning on Show mean velocity. Were you correct?

the answer would be b i believe

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.      

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol