Free Atomic Mass Essays and Papers

In this experiment, the student aims to determine the relative atomic mass (R.A.M) of lithium using two different methods. The first method involves dissolving a known mass of lithium in water and collecting the hydrogen gas produced to calculate the R.A.M. The balanced equation for this reaction is 2Li + 2H2O → 2LiOH + H2. The second method involves a titration experiment using lithium hydroxide produced in the first experiment. The balanced equation for this reaction is LiOH + HCl → LiCl + H2O

Determination of the Relative Atomic Mass of Calcium In this experiment, I will determine the relative atomic mass of calcium by two different methods. v By measuring the volume of hydrogen produced. v By titrating the lithium hydroxide produced. Method 1 -------- [IMAGE] v 0.10g of calcium used. v 100cm3 of distilled water used. Results Method 1 Mass of Calcium (g) Total volume of gas produced (cm3) 0.10 37 v Starting point of water in cylinder =

Determination of Relative Atomic Mass of Lithium Evaluation: In general the accuracy of the experiments was good. However with practice, the accuracy could be improved; accuracy being how close the results are to the real answer. I think I have carried pit the experiment as well as I possibly could at the time with the given conditions and time period allowed. I have gained precise results from the practical. However, looking back at the analysis section, the relative atomic mass values I found

Determining the Relative Atomic Mass of Lithium An experiment has been carried out to determine the relative atomic mass of Lithium by using two different types of methods The first method that was carried out was to determine the volume of Hydrogen produced. In this experiment a fixed amount of Lithium was used, in my case it was 0.11g. At the end of this experiment, the volume of Hydrogen gas I collected was 185cm³. Then using the solution of lithium hydroxide made from experiment

Copper has many chemical properties that make it unique. The Atomic number of copper is 29. An Atomic number is a measure of the amount of protons in the nucleus of an atom. Protons are sub-atomic particles, which have a positive charge. The Atomic mass of copper is 63.546. The Atomic mass is a measure of how many neutrons and protons are in an atom. Neutrons are sub- atomic particles, which have no charge. Thus, using the Atomic mass and Atomic number of Copper, we can determine that it has 29 proton

to the cathode, the mass of the anode to the cathode, the mass of the anode decreases whilst the mass of the cathode increases. I can support the point I've made above by faradays law which is: Faraday's Second Law of electrolysis states that: "The mass of an element deposited by one Faraday of electricity is equal to the atomic mass in grams of the element divided by the number of electrons required to discharge one ion of the element." Hypothesis: The mass of the anode should

positive charge, electrons have a negative charge while neutrons are neutral and carry no charge. The only similarities, which 2 of the particles have, are protons and neutrons and their mass is equal to the mass of an atom of hydrogen. While scientifically we call this mass one atomic mass unit. The mass of an atom depends on the amount of protons and neutrons the atom contains and the arrangement of particles within the atom. The arrangement of the particles within an atom depend on how

heavy, soft metal. It weighs nearly twice as much as lead. Shiny and deep yellow in color, gold is one of two metals, which are not gray or white when pure. Gold is the most ductile of metals. Properties of gold are: ? Symbol - Au ? Atomic Number – 79 ? Atomic Weight – 196.967 ? Electron Configuration - -32-18-1 ? Group in Periodic Table – 1B ? Density at 68 F – 19.3 g/cm^3 ? Boiling Point – 5,370.8 F ? Melting Point – 1,945.4 F ? Number of Protons/Electrons –

hydrogen is composed of one proton. Deuterium, present in ordinary hydrogen to the extent of 0.02 percent, contains one proton and one neutron in the nucleus of each atom and has an atomic mass of two. Tritium , an unstable, radioactive isotope, contains one proton and two neutrons in the nucleus of each atom, and has an atomic mass of three. Both deuterium and tritium are essential components of nuclear fusion weapons, or hydrogen bombs. Free hydrogen is found only in very small traces in the atmosphere

grayish metal that has been with us for thousands of years. That metal is lead, still one of the world's most useful substances, and one that never ceases to find a role in human society. Lead has the atomic symbol of Pb (for plumbum, lead in Latin). The atomic number for lead is 82 and the atomic mass is 207.19 AMU. It melts at about 327.502 oC and boils at 1740 oC. Lead is a heavy, ductile, soft, gray solid. It is soluble in nitric acid and insoluble in water. It is found in North, Central and South