El magnesio (Z = 12) tiene tres isótopos: el 78.70 % de los átomos del metal tienen 12 neutrones, 11.13 % tienen 13 neutrones y 10.17 % tienen 14 neutrones. Calcule la masa atómica relativa promedio aproximada del magnesio.

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

Match the acid base pairs by arranging the acid name with the conjugate base formula. hydrogen carbonate hydrogen phosphate carbonic acid read water sulfuric acid phosphoric acid a. co32- b. hso4- c. hco3- d. po43- e. h2po4- f. oh-

Acontainer holds 35.8 moles of gas under 10.0 atm of pressure at 70.0 c. what is the volume of the container?