Ill give similar investigations conducted in many parts of the world can result in the same observations and inferences. what is the relationship between an observation and an inference? (2 points) an observation is fact but an inference is only opinion. an observation can be proven or disproven but an inference cannot. an inference is an attempted explanation based on observations. an inference is based on fact but an observation is based on experimentation.

The 3rd option An inference is an attempted explanation based on observations.

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.