Express 5.607892 to four significant figures and write the result in standard form.
5.657
5.608
5.607
5.609
The molecular weight of O2 and SO2 are 32 and 64 respectively. At 15oc and 150mm Hg pressure, 1L of O2 contains 'N' molecules. The number of molecules in 2L of So2 under the same conditions of temperature and pressure will be
N/2
N
2N
4N
__________ defined as mass of 1 mole of molecules of an element.
Molar volume
Molar molecular mass
Molar volume of gas
Molar volume of liquid
How many different elements are known to exist?
140
160
110
115
H2 is
Monatomic
Diatomic
Triatomic
None of these
Calculate the amount of carbon dioxide that could be produced when 1 mole of carbon is burnt in air.
44g
43g
40g
38g
He, Ar, Kr, Na, K are
Monoatomic
Pentatonic
How many significant figures are there in 1.00 × 106?
3
2
1
0
