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WorksheetsX-mas Quiz is ....
Total questions: 7
Worksheet time: 18mins
What is the average molar mass of the mixture composed by
756 g nitrogen gas and 27 mol carbon-monoxide
28g/mol
21 g/mol
36g/mol
29g/mol
Reorder the following atoms by increasing number of unpaired electrons!
Zn
Ge
P
Fe
Cr
Reorder the following atoms by decreasing number of valence electrons!
When equal main group element are to set higher than subgroup elements!
He
Se
Cr
Fe
Zn
Pair the molarity with the corresponding concentrated acids of lab work!
85% sulpuric acid (1740kg/m3)
15 mol/dm3
98w% sulpuric acid (1840kg/m3)
18 mol/dm3
63w% nitric acid (1410kg/m3)
14 mol/dm3
35w% hydrochloric acid (1840kg/m3)
11 mol/dm3
no pair
10 mol/dm3
Az NaOH egy (a) -bázis.
Szokványos mértékegysége: g/dm3.
(a)
Milyen kémhatású a só vizes oldata?
ammónium-klorid
nátrium-karbonát
kalcium-klorid
