Asked by rose

the mass of 2.50 mol of a compound with the formula ECl4, in which E is a nonmetallic element, is 385g. what is the molar mass of Ecl4? what is the identity of E?
Answered by rose
sorry, sent it twicee
Answered by Devron
molecular weight of Cl =35.4g

2.50 mol=385g of ECl4

This means that
1 mole of ECl4= (1/2.50)*385g= molecular weight of 1 mole of ECl4

molecular weight of 1 mole of ECl4-4(35.4g)= molar mass of E.


look up the identity in the periodic table.
Answered by rose
thankks again!!1
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