Hydrogen

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…

test tube which indicates the formation of gas. After the reaction, the HCl solution appears to still have bubbles in its presence and the zinc metal is fizzing. In this reaction, the zinc reacts with the hydrochloric acid to form zinc chloride and hydrogen gas (equation 10). For the first double replacement reaction, barium nitrate Ba(NO3)2 is combined with sodium hydroxide NaOH. During the reaction, the mixture is cloudy and white while there are small particles of precipitation in the…

) (a) Carbon (b) Hydrogen (c) Nitrogen (d) Oxygen (e) Sulfur (f) Phosphorus My answer is (a) (b) (d) (2:19:54 PM) 2. Which of the following elements can be found only in proteins? (Check all that apply.)…

Solar cores of high temperatures, generate energy quicker, therefore higher temperature stars are more luminescent. Stars located on the main sequence, referred to as “dwarfs”, must generate power through hydrogen and helium nuclear fusion in their solar core and be in thermal equilibrium, the balance between luminosity and energy generation, and hydrostatic equilibrium, equality between pressure and gravity. Following the mass-luminosity relationship, hot…

Molecules like cyclosporine that are non-ionisable, lipophilic and non-polar are challenging to formulate due to their low solubility and no effect of pH on solubility, and they are also solubilised in non-aqueous solutions composed entirely of organic solvents. The combination of polyoxyethylated castor oil and ethanol that are water miscible surfactants and solvents can be used to solubilise the non-polar active ingredient, cyclosporine. Therefore, the excipients are appropriate for the…

The Pk value for this equilibrium system is 6.3. It is evident that the pH is dependent on the concentration of hydrogen carbonate ions (HCO3-) and the concentration of carbon dioxide (CO2) in the air above the pool. equation 7 For optimal buffering capacity the ph of the pool (recommended to be 7.2 – 7.8) should be kept within one pH of the Pk value of the…

forms of Isonicotinamide (I, II and IV) were crystalized using solvents such as nitrobenzene, acetone, nitromethane, methanol, ethanol, 2-propanol, dioxane and chloroform. It was found that the hydrogen bonding behaviour of Isonicotinamide is of interest since different polymorphs exhibited different hydrogen bonding and molecular…

Atomic structure AC1.1 1. Produce a table showing each sub-atomic particle with their relative masses and charges (Bbc.co.uk 2015). Particle Relative Charge Relative Mass Proton +1 1 Neutron 0 1 Electron -1 2. Explain the meaning of the terms, ATOMIC NUMBER and MASS NUMBER of an atom in terms of sub atomic particles. The atomic number refers to the number of protons in an atom, the mass number refers to the number of protons plus the number of neutrons (Bbc.co.uk 2015). 3. A…

dependant and creates variable charges. These are created from the dissociation of the hydrogen ion in organic matter, and hydrogen ions being added and removed of the alcohol (OH) group on mineral surfaces. The amounts of charge changes due to the pH, as the concentration of hydrogen and hydroxide ions determine the pH. This relates to soil solution acidity. How acidic the soil is shown by the concentration of hydrogen ion there are within the solution. Therefore, the higher concentration of…

for the symbol of the element Hydrogen. Together the meaning is the power of hydrogen. pH used to compare the relative acidity or alkalinity of a solution at a given temperature. A pH of (7.00) describes a neutral solution because the activities of hydrogen and hydroxide ions are equal. When the pH is below (7.00), the solution is described as acidic because the activity of hydrogen ion is greater than that of hydroxide ion. A solution is more acidic as the hydrogen ion activity increases and…