1) Calcola la massa in grammi di 2,5 x 1025 molecole di
acido solforoso, H2SO3
2) Un cubetto d...
![Chemistry](/tpl/images/cats/himiya.png)
1) Calcola la massa in grammi di 2,5 x 1025 molecole di
acido solforoso, H2SO3
2) Un cubetto di argento (densità 10,5 g/cm) ha il lato di 5
cm. Calcola la quantità in moli e il numero di atomi di
argento presenti nel cubetto.
3) Sono contenute più moli di ferro (densità 7,87 g/cm°) in
una sfera di raggio 2 cm o in un cubetto con il lato di 3
cm?
4)Calcolare la composizione percentuale del solfato di
magnesio, MgSO4
5) Un composto puro ha la seguente composizione
percentuale:
49% di C
2,74% di H
48,1% di ci
Determina la formula minima del composto.
6) Calcola la massa molecolare di un gas che a 60 °C e
![answer](/tpl/images/cats/otvet.png)
Answers: 2
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