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How was helium identified on the sun with a spectroscope?
Every element, when heated, sends out light with characteristic spectral lines. These same lines are also absorbed when the element is present in an atmosphere between a light source and the observer. When studying spectral lines of the sun some lines were noted that were not known on earth, from which we concluded that there must be an inknown new element. Which was subsequently found on earth.
How are salts and bases identified?
For salts: 1. After the color and odor. 2. After the products of some chemical reactions. 3. After a crystallographic study. 4. After a chemical analysis. 5. After a thermogravimetric study. For bases: 1. After the color and odor. 2. After the products of some chemical reactions. 3. After the determination of pH. 4. After a chemical analysis. 5. After a thermogravimetric study.
What are disadvantages of using mid-IR spectra?
Some disadvantages of using mid-IR spectra include overlapping peaks leading to difficulty in peak assignment, limited quantitative analysis due to strong matrix interferences, and sensitivity to environmental factors such as temperature and humidity which can affect spectral results.
Does Every element and compound in nature have a unique set of spectral lines?
Elements have several spectral lines and although some lines may be the same between different elements most lines are not and the whole spectrum for each element is indeed unique.
What are different type of the spectral reflectance the spectral reflectance curves of major ground features?
Some major ground features and their typical spectral reflectance curves include vegetation, which shows high reflectance in the visible spectrum and low reflectance in the near-infrared spectrum; water, which has low reflectance across all wavelengths; soil, which typically has higher reflectance in the visible spectrum and lower reflectance in the near-infrared spectrum; and urban areas, which have varying spectral reflectance depending on surface materials like asphalt, concrete, and buildings.
What are some examples of threats that can be identified through a SWOT analysis?
Some examples of threats that can be identified through a SWOT analysis include competition from other businesses, changes in market trends, economic downturns, and regulatory changes that may impact the business negatively.
What are some ways you could be identified through forensic science?
Fingerprints. Blood group. DNA Fibre analysis.
What are some examples of threats that can be identified in a SWOT analysis?
Some examples of threats that can be identified in a SWOT analysis include competition from other businesses, changes in regulations or laws, economic downturns, technological advancements that may make current products or services obsolete, and potential risks to the reputation of the company.
Do stars of the same spectral type have the same characteristics?
No, stars of the same spectral type do not necessarily have the same characteristics. Spectral type is based on a star's temperature and color, but other factors such as size, age, and composition can vary among stars of the same spectral type.
What are some characteristics used to classify stars?
In Astronomy stars can be classified by theircolor (temperature)composition (as found by their spectrum)agelocation in a galaxymassproximity to other stars
What are the characteristics of scientific theories?
Scientific theories are based on observation, usually involve some form of mathematical analysis, and can be tested by experiment or by additional observation.
How was helium identified on the sun with a spectroscope?
Every element, when heated, sends out light with characteristic spectral lines. These same lines are also absorbed when the element is present in an atmosphere between a light source and the observer. When studying spectral lines of the sun some lines were noted that were not known on earth, from which we concluded that there must be an inknown new element. Which was subsequently found on earth.
What characteristics does a normal nasopharyngeal culture have?
Bacteria that normally grow in the nose cavity will be identified by a nasopharyngeal culture. These include nonhemolytic streptococci, alpha-hemolytic streptococci, some Neisseria species, and some types of staphylococci.
What is project report plus characteristics of project report?
project report is a systematic and technical analysis of data collection about selected topics and identify the some problem
What is project report plus characteristics project report?
project report is a systematic and technical analysis of data collection about selected topics and identify the some problem
What is role of labs for report of a liquid?
To make a chemical analysis o f the liquid; sometimes a microbiological report is a attached, some physical characteristics determined, etc.
Suppose you want to know the chemical composition of a distant star Which piece of information is most useful to you?
The star's absorption spectrum would be most useful in determining its chemical composition. By studying the specific wavelengths of light that are absorbed by elements in the star's atmosphere, scientists can identify the presence of different elements and molecules.
