"Chemistry 4u" Essays and Research Papers

Sort By:
Satisfactory Essays
Good Essays
Better Essays
Powerful Essays
Best Essays
Page 3 of 50 - About 500 Essays
  • Satisfactory Essays

    Chemistry

    • 765 Words
    • 4 Pages

    Isotopes and average atomic mass Isotope: element variations with different atomic mass but same atomic number Isotopic Abundance: the relative amount in which each isotope of an element Calculating: given 2 isotopes of an element [B: 10.01u] [B: 11.01u] 1) Given average atomic mass: 10.81u If given percentages‚ you can find average atomic mass by adding each portion 2) Set variables for unknown values Let x represent % abundance for 10/5 B Let 1-x represent % abundance for 11/5 B Calculate:

    Premium Chemical element Neutron Atomic number

    • 765 Words
    • 4 Pages
    Satisfactory Essays
  • Good Essays

    chemistry

    • 670 Words
    • 3 Pages

    Abstract By adding HCl to 2-methyl-2-butanol‚ through the Sn1 mechanism‚ 2-chloro-2-methylbutane is formed. Water‚ sodium bicarbonate and NaCl(aq) were then added to the 2-chloro-2-methylbutane to remove any of the excess water from the reaction. To confirm‚ a successful reaction‚ AgNO3 was added to the 2-chloro-2-methylbutane. A white precipitate formation confirmed a successful Sn1 reaction. Introduction Nucleophilic substitution reactions such as Sn1 and Sn2 allow us to convert one functional

    Premium Alcohol Functional group Chemical reaction

    • 670 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Chemistry

    • 1812 Words
    • 8 Pages

    Absorbance of Light vs. Concentration of Colored Solution Introduction: Performing this lab showed the importance of light in virtual drug screening because light can be used in a variety of ways to obtain different kinds of information in research. Light can be used to determine the concentration of DNA or protein in solution‚ tag different objects such as cells‚ protein structures‚ or bacteria in order to determine whether there is a large amount of a certain substance‚ and to determine the size

    Premium Concentration Chemistry Light

    • 1812 Words
    • 8 Pages
    Good Essays
  • Good Essays

    Chemistry

    • 649 Words
    • 3 Pages

    Module 4: 10. Strong Bases: NaOH‚ KOH‚ Na2CO3‚ NaHCO3‚ Na3PO4‚ NaHPO4‚ Strong Acids: Fe(NO3)3‚ HCL‚ HNO3‚ Al(NO3)3‚ NiCl2‚ H2SO4 11. Acidic Neutral Basic NaCl KNO3 NaOH HC2H3O2 Na2CO3 NaC2H3O2 NaHCO3 Fe(NO3)3 NaNO3 Na3PO4 HCl MgSO4 KOH HNO3 Na2SO4 NaHPO4 CuSO4 NaNO2 CoCl2 Al(NO3)3 NiCl2 H2SO4 KCl NH4Cl 12. CuSO4 CuCO3.Cu(OH)2(s) + 2 H2SO4(aq) ----> 2 CuSO4(aq) + CO2(g) + 3 H2O(l) Na3PO4 Na3PO4 (aq) + 3H2O (l) --> H3PO4 (aq) + 3NaOH

    Free PH Acid dissociation constant Acid

    • 649 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Chemistry

    • 762 Words
    • 4 Pages

    Experiment 9 : 
The effect of substrate concentration on enzyme activity Objective To find out the relationship between the substrate concentration and the rate of reaction by determining the number of bubbles produce Hydrogen peroxide (H2O2) is a by-product of biochemical metabolism. An accumulation of hydrogen peroxide can be deadly‚ so it has to be decomposed. One of the decomposing factors is an enzyme called Catalase. Catalase breaks hydrogen peroxide into water and oxygen. The chemical

    Premium Hydrogen peroxide Chemical reaction Oxygen

    • 762 Words
    • 4 Pages
    Good Essays
  • Better Essays

    Chemistry

    • 2008 Words
    • 9 Pages

    Studying Chemistry at UCL UNDERSTANDING THE PAST  CHALLENGING THE PRESENT  SHAPING THE FUTURE Why UCL‚ why UCL Chemistry‚ why London? Course Structure What you’ll do; timetable; assessment From being taught to deep learning Opportunities Why UCL? UNDERSTANDING THE PAST  CHALLENGING THE PRESENT  SHAPING THE FUTURE History Oldest university (1826) outside Oxbridge in England First inclusive UK university Founded on principle of educating anyone who would benefit Non-CofE‚ women

    Premium Chemistry Organic chemistry

    • 2008 Words
    • 9 Pages
    Better Essays
  • Satisfactory Essays

    chemistry

    • 393 Words
    • 2 Pages

    Source: Chemistry by C. Mortimer PP 1-5 Chemistry by R.S. de Borja PP 1-5 Definition of Chemistry Chemistry is concerned with the composition and the structure of substances and with the forces that hold this structure together. And the changes that undergoes with the energy involved in them. History Chemistry which emerged‚ took hundreds of years to develop the history of its development can be divided ranging into five

    Premium Chemistry Middle Ages

    • 393 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Chemistry and Importance

    • 1955 Words
    • 8 Pages

    university of Business Agriculture and Technology Assignment No-01 Course name- General Chemistry “Topic” The importance of Chemistry in our daly life Submitted to Dr.Mohammad Harun-Ur-Rashid Submitted by Group-Royals Chemistry: The chemistry is the study of substances specially their structure‚ properties‚ transformations and the energy accompanying these transformation. Chemistry is very important within our daily lives. We are using it all of the time without even realizing

    Premium Chemistry Chemical reaction

    • 1955 Words
    • 8 Pages
    Satisfactory Essays
  • Good Essays

    Role of Chemistry

    • 1113 Words
    • 5 Pages

    A. Role of Chemistry in Society Applications of chemical science have contributed significantly to the advancement of human civilization (1‚ 2‚ 3). With a growing understanding and ability to manipulate chemical molecules‚ the post-World War II chemist was considered a societal problem solver. They synthesized crop-enhancing agricultural chemicals to ensure a constant and viable food supply. They played a significant role in the eradication of deadly diseases by developing life-saving pharmaceuticals

    Premium Chemistry

    • 1113 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Chemistry and Us

    • 504 Words
    • 3 Pages

    Chemistry and Us The world is surrounded by so many things and everything is made of chemicals. Chemistry is very vital because it helps us to know the composition and changes of matter. Every single day of our life passes through chemistry in many ways. Human body works through the chemical reactions happening inside it. When we breathe‚ eat and sleep there’s still the presence of chemistry. The oxygen and foods we take helps our body to work. Exchanges of gasses‚ breaking down of foods we

    Premium Chemical reaction Chemistry Chemical substance

    • 504 Words
    • 3 Pages
    Good Essays
Page 1 2 3 4 5 6 7 8 9 50