Why are the elements of Group-18 known as noble gases ? View Solution Which element disintegrates to give two noble guses View Solution Which element disintegrates to give two noble guses View Solution Noble gases are relatively inert elements. Give reasons. ...
At a temperature of 250 degrees Fahrenheit and a pressure of 20 psi, what is the state of water? Ideal gases are assumed to have no forces between molecules. What is the effect of attractive forces on the boiling point of a real gas? Explain why it has this effe...
Which of the following do you expect to have the largest entropy at 25 degrees celsius? {eq}Fe \\ Xe \\ H_2O {/eq} Entropy: The measurement of the randomness in the molecule is known as the entropy of the system. AS the randomness increases, the en...
He, Ne, and Kr all are found in very little amount in atmoshphere, so all are called rare gases.
A. Planetesimals may remain in star systems when hydrogen and helium combine with less common heavier elements. B. Planetesimals are composed of heavy elements because hydrogen and helium stay in the form of gases. C. Planetesimals are small, solid objects that condense within a forming star syst...
The coating, which contains a siloxane, imparts such properties to the element during use that the layer is impermeable at prevailing temps. When temps. in excess of normal working temp. are experienced, the coating becomes permeable to a selected gp. of gases. Used in the prodn. of ...
281 25 October 1979 the expansion is due to magmatic gases which constitute a few wt% of the magma. In the Rotoehu case it is possible that steam constituted a few tens of wt% of magma involved. This ash is an example of a new class of pyroclastic deposit for which the name '...
The method according to an example embodiment of the present invention may be carried out rapidly, simply and using little expenditure in equipment technology, because the necessary elements, which are required for the formation of the protective layer, may be able to be applied to the substrate ...
Yoga is a mind-body practice involv- ing multiple integrated elements (e.g., conscious control of the breath, postures, meditation) [70]. The relative influence and interactions of these elements on health outcomes are unknown. In short, yoga may convey health benefits which are unrelated, or...
elements are a large amount of energy stored per unit of weight and which is roughly twice that of conventional lead batteries, and a high number of charging - discharging cycles. Thus, batteries have been produced using basic polymers, such as polyacetylene, polyphenylene and phenylene ...