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Worksheetsquiz 4 sec 1
Total questions: 13
Worksheet time: 25mins
number of moles …..
mass of substances by gram + molar mass
mass of substances by gram / molar mass
mass of substances by gram x molar mass
molar mass / mass of substances by gram
Substances its mass is 80g and number of moles is 2 mole so its molar mass is
160g
40g
100g
400g
NO.of mole atoms of Phosporus in vapour state .. .. no of mole atomsofSulpher in the same physical state
double
half
quarter
third
in the reaction 2Mg + O2 ------ 2MgO , if the mass of the produced MgO is 80 g so the mass of oxygen which enter reaction is ........ .[Mg=24, 0=16]
32g
46g
64g
60g
According to the following reaction 3H2 + N2----- 2NH3 if the mass of reacted hydrogen 30 g so the number of moles of reacted nitrogen is
2mol
3mol
4mol
5mol
Substances molar mass = 40 g and number of moles is 2 mol so its mass is
More than 40 g
Less than 40 g
Less than 2g
10 g
According the following reacton 2X2 + Y2 …….2X2Y IF 36 MOL OF GAS X2 reacted with amount of Y2 gas so number of moles of gas produced from recaction …….mol
18 mol
36 mol
9 mol
10 mol
if the molar mass of hydrated cupper sulphate CuSo4 ,, XH2O equal 249.5 g so X value will equal [Cu=63.5 , 0=16 , H=1]
3
4
5
6
which of the following apply on neutralization reaction ..
produce acid and base
produce acid and water
all of them expressed by formula ions
reaction of acid and water
the largest molar mass of the following is ....
mole of sulphur in vapor state
mole of sulphur in solid state
mole of phosphorous in vapor state
mole of phosphorous in solid state
if mass of 1 mol of X2(SO4)3 equal 342g so X value equal …..
28
27
56
30
Same masses of different gases different in STP contains same number if molecules bec .....
have same number of ions
have same number of moles
have same molar mass
have same number of atoms
By increasing mass of substance to double , which of the following is correct
molar mass decrease to half
molar mass still constant
number of molecules decrease to half
number of moles decrease to half
