1
AIEEE 2006
+4
-1
How many moles of magnesium phosphate Mg3(PO4)2 will contain 0.25 mole of oxygen atoms?
A
1.25 $$\times$$ 10-2
B
2.5 $$\times$$ 10-2
C
0.02
D
3.125 $$\times$$ 10-2
2
AIEEE 2006
+4
-1
Density of a 2.05M solution of acetic acid in water is 1.02 g/mL The molality of the solution is
A
2.28 mol kg-1
B
0.44 mol kg-1
C
1.14 mol kg-1
D
3.28 mol kg-1
3
AIEEE 2005
+4
-1
Two solutions of a substance (non electrolyte) are mixed in the following manner. 480 ml of 1.5 M first solution + 520 ml of 1.2 M second solution. What is the molarity of the final mixture?
A
2.70 M
B
1.344 M
C
1.50 M
D
1.20 M
4
AIEEE 2005
+4
-1
If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of the substance will
A
be a function of the molecular mass of the substance
B
remain unchanged
C
increase two fold
D
decrease twice
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