Kurst

How many ways and what are that in to say "that" in french?

Why was carbon chosen over silicon in defining the mole?

With isotopes, is it fair to say that each isotope has a slightly differnent volume due to the differing numbers of neutrons in the nucleus? i.e. carbon-12 is slightly smaller in volume than carbon-13. If not, why?

Then, do isotopes have different atomic radii? since they all have different numbers of neutrons. Even if they only differ by 10^-23 m, there is still some diff right?

translate this Le bonheur ici bas n'a pas de prix Am I right in saying"happiness here doesn't have a price". If not, what is the translation and two, what does "bas" mean in this context?

the sacred scriptures is more than a pile of old stories. Any websites you can give me to help with this?

I am doing a project on Isaac Newton. Ive looked at his impact on the development of the telescope, in particular, the reflecting telescope. Ive researed this a bit and have found conflicting dates. Some sources say he built the first relflecting telescop...

When would one use the term ressentir as opposed to sentir?

do converging/diverging lenses work because of refraction?

HOw would I say "Dear son" and "Love from" in German?

Does one Candela (SI Unit for lumious intesnity) = lumens per metre squared, i.e. 1 Cd = 1 lum/m^2 if not, what is the relationship between candela and lumens?

what do the phrases "Je veux me battre" and "voulu mettre ton destin à genou" (there not related).?

Does the lattice constant of a unit cell vary over isotopes? e.g Si 28 and Si 29

Sorry - are you being sarcastic or serious (its a bit hard to tell from text)

Then, in the light intensity equation E=L/r^2, where E is illumination, L is luminous intensity and r is distance, what are the units of each factor?

Then why does the new silicon kilogram prototype need to be made out of pure isotope silicon-28?