Answer to: (a) What are the properties of elements and compounds? (b) How are properties of a compound related to elements that comprise it? By...
(a) by fractional crystallisation. (b) Distillation under reduced pressure, i.e., vacuum distillation. (c) to decompose NaCN or Na2S present in the Lassaigne's extract, otherwise these will produce white precipitate with AgNO3 and thus interfere wit
Each unit of blood can be separated into several components so that each component can be given to someone with a need for that specific one. Therefore, a single unit of blood can help many people. These components include: Packed RBCs Fresh frozen plasma Platelets WBCs Albumin Immunoglobulins...
How can I differentiate between ionic and covalent compounds? How would you identify and explain the key principles of statistical analysis and measures of variance? How does a cave form by chemical weathering? When a compound is separated, is this a chemical change because there are now differen...
Traditionally, this step has been accomplished by soaking raw flax stalks, but these days, manufacturers may use chemicals to achieve the same effect. Before flax fibers are spun into yarn, these chemicals are washed away, but residual toxic substances may remain on chemically-separated flax ...
Computers separated data into packets and then moved the packets from one place to another one at a time. Serial connections were reliable but slow, so manufacturers began using parallel connections to send multiple pieces of data simultaneously. It turns out that parallel connections have their ...
With the intensification of the greenhouse effect, a series of natural phenomena, such as global warming, are gradually recognized; when the ambient temperature increases to the extent that it causes heat stress in plants, agricultural production will in
Aluminum exists in nature in various compounds. To take advantage of its properties, it must be separated from the other elements that combine with it -- a long, complex process that starts with a rock-hard material known as bauxite. After it undergoes that process, aluminum is very soft an...
Describe how volatile compounds can be separated by gas chromatorgprahy. Make sure to discuss stationary and mobile phases. Explain how hemoglobin acts as an allosteric protein. Describe how a surfactant such as a soap or detergent molecule works. ...
Why do elements form compounds? How are the ions accelerated in a Mass Spectrometer? Explain why cations in aqueous solutions are attracted to the oxygens of water molecules and why anions are attracted to the hydrogens of water molecules. ...