Helium is preferred to hydrogen in filling balloons becau...
Helium is preferred to hydrogen in filling balloons because hydrogen
is inflammable
is diatomic
exhibits isotopy
is a component of water
Correct answer is A
Helium is a colorless, non-toxic, non-flammable gas that is lighter than air. When balloons are filled with helium, they will float.
H\(^+\) + OH\(^-\) → H\(_2\)O The equation above illustrates...
What is the valency of an element with the electronic configuration 2, 8, 7? ...
Isoelectronic species have the same number of ...
The alloy used for metal work and plumbing contains ...
Consider the neutralization reaction represented by the following equation: Na2CO3 + 2HNO 3 → 2...
Which of the following substances is a mixture? ...
The position of equilibrium in a reversible reaction is affected by ...