Hydrogen storage

hypothesized that the reaction with hydrochloric acid would have the fastest reaction rate due to its high acidity observed from the pH scale. From there, the following reactions were based on the pH of the acid involved as well as the concentration of hydrogen ions/atoms within the acid molecule. As a result, it was hypothesized that the sulfuric acid reaction would be the second fastest and the acetic acid reaction would be the slowest. Observing the results, the hypothesis on the fastest rate…

In the flame test lab, metal ions are heated on wooden splint in the form of a liquid that were previously soaked in a solution of metals. These electrons get heated at the same temperature, however the energy that is needed to excite each electron in the different metals is not the same. This means that the energy levels that change are now unstable and need to cool down, and as soon as they are moved into the heat source through kinetic energy, a photon of light energy is created and this…

Residential fires can kill more than 3,000 people per year in the United States. Most of these fires happen when people are sleeping and unaware of the situation. Have you ever wondered how basic items in your house protect you, such as walls, electronics, furniture, and doors? The answer lies in the material of these advantageous objects. These items contain fire-retardant materials including brominated hydrocarbons, organophosphorus compounds, and various minerals/hydrates. The question is,…

Cobalt: The element Cobalt it is located on the periodic table, Group 9. Cobalt is the 27th element on our Periodic Table. It is a chemical element, it has a density of 8.9 grams per cubic centimeter. Cobalt has a boiling point of 3,100 degrees Celsius (5,600 degrees Fahrenheit). Cobalt’s symbol is Co, The atomic # is 27 so the protons and electrons are 27 as well. Cobalt has an atomic mass of 59 and 32 neutrons. The melting point is 2,719 degrees Fahrenheit. This element was discovered in…

measuring the biomarkers of the toxic effects of lead. The concentration of lead in the body has been measured in blood, bone, nails, hair, teeth, urine, faces and saliva for screening and diagnostic purposes. In all samples, specimen collection, storage and processing must be meticulously performed to avoid contamination of the samples with lead in the surrounding environment. Teeth, nail and bone reflect long term exposure to lead. The loss of lead from teeth is much slower than the loss from…

The noble gases are the group of elements which are like no other elements. The noble gases are the elements grouped as the last group, group 18. These elements, from smallest to greatest atomic mass, are Helium, Neon, Argon, Krypton, Xenon, and Radon. Group 18 wasn't always called the noble gases. this group used to be called the inert gassses. They changed the name of thisi group because they are not always inert, or chemically inactive. the first element in this group is the element…

The images a MRI machine actually present are the water molecules that make up most of our bodies systems and organs. Water molecules consist of oxygen and hydrogen atoms, the core of which is a nucleus, a single proton. The protons have a basic property called nuclear spin as well as an electrical charge which makes them act like little magnets. When the magnetic field makes the spinning protons wiggle, the stronger the magnetic field, the faster the wiggle. Nuclei wiggle at roughly 50 million…

The D-glucose serves to reduce the silver from Ag1- to Ag1+. The sodium citrate first reduces Ag1+ to Ag, and then functions to bind with the particle surface of silver nitrate particles to allow them to interact. Finally, silver nitrate can aggregate. The silver nitrate combined with D-glucose, sodium citrate, and heat forms an aggregate. The citrate binds with the particle coating and dispels the repulsion between silver nitrate nanoparticles. The nanoparticles then form an aggregate-- a loose…

This lab was conducted to find the key differences between the quantity of heat (q) and ∆H of a substance. Different masses of substances CaCl2 and NH4NO3 were dissolved in water to see how changing mass impacts the q and ∆H of a substance. When the two substances dissolve, they become ions. CaCl2 dissolves in a reaction of: CaCl2 Ca2+aq + 2Cl1-aq while NH4NO3 dissolve in a reaction of: NH4NO3 NH41+aq + NO31-aq . As shown in these reactions, when ionic compounds dissolve in water, they break…

happening all the time and you don’t even know it. Some of the ways that the elements are distributed throughout the body are in the bones, blood, metabolism, genetics, and even diseases. In fact, the human body is composed of 65% Oxygen, 18% Carbon, 10% Hydrogen, 3% Nitrogen, 1.5% Calcium, and in smaller amounts of several other elements. Bones make up the skeleton of the human body. They are composed of a collagen rich mixture of calcium and phosphate, which are both elements located on the…