Chemistry, 19.11.2020 01:30 sanjanadevaraj26
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1. El helio es un gas valioso utilizado en la industria, en investigaciones en las que se requiere baja
temperatura, en los tanques para buceo profundo y para inflar globos. ¿Cuántas moléculas de
sustancia de helio hay en 6,46 g de este gas?
2-. Calcula el número de átomos en 0,551 g de potasio.(MA K=39 g/mol)
3- Calcula la cantidad de moles de cloroformo(CHCI) en 198 g de cloroformo.
Datos (MA g/mol → C=12 , Cl=35,5).
4-¿Cuántos mol de átomos hay en 6 millones de átomos de este metal?
Answers: 2
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