How many electrons are present in 16g of CH4 ?
6.022 × 1024
6.22 × 1024
6.02 × 1024
6.20 × 1024
How many significant figures are there in 1.00 × 106?
3
2
1
0
_________ is defined as the capacity to do work its unit s Joule.
Speed
Energy
Force
Area
How many mole of methane are required to produce 22g of CO2 (g) after combustion?
.25
.375
0.5
.10
________ are meaningful digits which are known with certainty.
Significant figures
Ratio
Mixtures
None of these
Hexa - atomic contains _________ atoms.
Six
Seven
Five
Four
Gram atom is defined as atomic weight expressed in grams. H contains ______________ atom.
6.022 × 1023 atom
6.22 ×1023 atom
6.20 × 1023 atom
6.02 × 1023 atom
Unit of power is
Watt
∫
Mol
H2
_________are those which do not have same composition throughout.
Homogeneous mixtures
Heterogeneous mixtures
Salt mixtures
Monoform