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5/64 MCQs for:
The Mole Concept
An organic compound containing Carbon, Hydrogen and Oxygen only has the following composition. 52.2% Carbon, 13.0% hydrogen, and a relative molecular mass of 46.
I: the empirical formula of the compound is C2H6O
II: The molecular formula of the compound is C2H6O

Standard pressure is:

Standard temperature is:

A. 0 oC

B. 273 K

C. 0 K

1000 cm³is:

A. 1 dm³

B. 1 l

C. 1 cm

What is the number of moles of copper (II) sulphate pentahydrate in 5 g of a sample of its crystal?