Hydrogen sulfide

Ammonia is a compound composed of nitrogen and hydrogen, having the formula NH3. The ammonia molecule is formed by sp3 orbitals as it has a tetrahedral geometry and a trigonal pyramidal shape. Ammonia has an experimentally determined bond angle of 106.7°, and an a bond length of 101.7 pm. The nitrogen atom in the molecule has a lone electron pair, which gives the molecule a dipole moment and polarity. Ammonia’s lone electron pair makes NH3 a base, a proton acceptor, and gives it the ability to…

sun. Gallium is a moderately abundant element in the Earth's crust. Its abundance has been estimated to be about 5 parts per million. It is found primarily in combination with zinc and aluminum ores. It is also found in germinate, an ore of copper sulfide (CuS).The United States produces no gallium. The largest producers are Australia, Russia, France, and Germany. Gallium does not exist in elemental form in nature, and the few high-gallium minerals that do occur are too rare to serve as a…

Elephant’s Toothpaste Experiment Introduction: A chemical reaction is a process in which atoms of the same or different element rearrange themselves to form a new substance. There are 7 ways to tell if a chemical reaction has occurred; if there are gas bubbles forming, if a precipitate is forming, if the colour has changed, if the temperature has changed, if the volume has changed, if it is giving out light and if there is a change in smell or taste. In a chemical reaction heat is either…

Gunpowder is one of china’s four greatest inventions. Gunpowder is an ancient chemical explosive that was accidently created by Chinese Taoists who were attempting to create a portion of immortality by combining salt peter, sulfur, and charcoal. There are multiple types of gun powder: Black powder (organic), black powder (modern / synthetic), cordite, smokeless ball powder (aka spherical powder), smokeless flake powder (found in shot shells), and smokeless stick powder (aka extruded powder).…

This substantial distinction prompts to the loss of an electron from the less electronegative particle and the pickup of that electron by the more electronegative molecule, bringing about two particles. These oppositely charged particles feel a fascination in each other, and this electrostatic fascination constitutes an ionic bond. Ionic holding happens between a nonmetal, which goes about as an electron acceptor, and a metal, which goes about as an electron contributor. Metals have few valence…

explode if contaminated with hydrazine, which reacts with the inadvertent introduction of nitrogen tetroxide. Concentrated acids can explode if water is poured into the acid. It should be poured into the water instead. Hydrogen can be explosive if there is a combination of accumulated hydrogen in battery/ under a vehicle's hood and a spark/ open flame. (Hammer and Price, 2001, p. 429). Question 4- Seven rules for use of respiratory protective equipment are: I. Personnel required to use…

She was a British-born American Astronomer who viewed the spectra of the stellar and solar atmospheres differently than the accepted wisdom of the time. Payne discovered that the stars were composed of mainly Hydrogen and Helium and that they could be classified according to their temperatures. She explained why there were 7 consistently formed absorption patterns from the known stars at the time. She hypothesized that they weren’t created by different combinations…

the concentration of the HCL, bottom of the test tube became hotter; it’s an exothermic reaction because energy is being released during the reaction in the form of heat. Another, increasing in concentration of HCL reacting with Mg, formation of hydrogen gas bubbles comes out faster and quicker the Mg gets invisible. Further, we record the time taken by each concentration to dissolve the Mg to plot the graph “concentration of HCl with respective…

Anasuya; Lee et al. 2007). The amide group in NVP is highly polar, which confirms it’s hydrophilic. NVP has been copolymerized with various monomers because the amide group has high affinity for many large and small molecules that are known to be good hydrogen-bond acceptors (Jin et al. 2013; Santanakrishnan et al. 2012; Arosio et al. 2011). NVP has been copolymerized with various siloxane derivatives monomers such as vinyl triethoxy silane (Gatica et al. 2003), vinyl trimethoxy silane, vinyl…

Chemical change is any change that results in the formation of new chemical substances. Chemical changes take place on the molecular level. Another way to think of it is that a chemical change accompanies a chemical reaction. To find if a Chemical Change is occurring you need to determine whether a new substance has formed because of the change. If a new substance has been produced, then a chemical change has occurred. The new substance formed in a chemical change could be a solid, liquid or…