El nitrito se determina por la reacción de Griess, que proporciona un compuesto coloreado que se absorbe a 550 nm y en una celda de 2cm , los resultados obtenidos para la disolución patrón de nitritos y para una muestra desconocida se presenta en la tabla adjunta . Calcule la concentración de nitrito en la muestra

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table