Unit 3
... Based on the compound name we can write its molecular formula: N2O4 The empirical formula describes the smallest ratio of atoms that are present in a compound. There is 1 nitrogen atom for every 2 oxygen atoms So the smallest ratio, or empirical formula) is… NO2 ...
... Based on the compound name we can write its molecular formula: N2O4 The empirical formula describes the smallest ratio of atoms that are present in a compound. There is 1 nitrogen atom for every 2 oxygen atoms So the smallest ratio, or empirical formula) is… NO2 ...
Peer Review in the Google Age
... side reaction of imines 5.8 ppm nmr nmr cdcl3 chloroform side reaction diasterotopic wiki adding anhydrous MgSO4 to the dichlormethane ether extraction hnmr doublet of doublet Boc-protected NMR chromatotron recipe triplet cdcl3 "13c nmr" ...
... side reaction of imines 5.8 ppm nmr nmr cdcl3 chloroform side reaction diasterotopic wiki adding anhydrous MgSO4 to the dichlormethane ether extraction hnmr doublet of doublet Boc-protected NMR chromatotron recipe triplet cdcl3 "13c nmr" ...
CHAPTER 3 THE CHEMISTRY OF LIFE Section 1: Matter and
... Energy exists in many forms and can be converted from one form to another. Every change in matter requires a change in energy. Energy may change from one form to another, but the total amount of energy does not change. This observation is called the law of conservation of energy. The total amount of ...
... Energy exists in many forms and can be converted from one form to another. Every change in matter requires a change in energy. Energy may change from one form to another, but the total amount of energy does not change. This observation is called the law of conservation of energy. The total amount of ...
Unit chemical bonds
... Use element’s Valence electrons electrons in outer shell • Write elements chemical symbol • Use a dot to represent valence e-’s • Place valence e-’s around symbol ...
... Use element’s Valence electrons electrons in outer shell • Write elements chemical symbol • Use a dot to represent valence e-’s • Place valence e-’s around symbol ...
Study Island Copyright © 2012 Study Island
... 15. Which of the following is true about a compound and its elements? A. The properties of a compound are the same as the properties of its elements. B. The elements all share identical properties, but their properties are different than the compound's properties. C. The properties of a compound are ...
... 15. Which of the following is true about a compound and its elements? A. The properties of a compound are the same as the properties of its elements. B. The elements all share identical properties, but their properties are different than the compound's properties. C. The properties of a compound are ...
Chap 2-3 Notes - WordPress.com
... Organic Chemistry : the study of all compounds that contain bonds between carbon atoms. Macromolecules: formed by a process known as polymerization. Monomers: small units that can join together with other small units to form Polymers large compounds formed from combinations of many monomers Four g ...
... Organic Chemistry : the study of all compounds that contain bonds between carbon atoms. Macromolecules: formed by a process known as polymerization. Monomers: small units that can join together with other small units to form Polymers large compounds formed from combinations of many monomers Four g ...
5.2 Molecular Models for Fungi Growing: Digestion and
... • Oxygen atoms do NOT bond to other oxygen atoms if they can bond to carbon or hydrogen instead. • Chemical energy is stored in bonds between atoms – Some bonds (C-C and C-H) have high chemical energy – Other bonds (C-O and O-H) have low chemical energy ...
... • Oxygen atoms do NOT bond to other oxygen atoms if they can bond to carbon or hydrogen instead. • Chemical energy is stored in bonds between atoms – Some bonds (C-C and C-H) have high chemical energy – Other bonds (C-O and O-H) have low chemical energy ...
ExamView - Chapter 4 Test.tst
... ____ 29. Which of the following equals one atomic mass unit? a. the mass of one electron b. the mass of one helium-4 atom c. the mass of one carbon-12 atom d. one-twelfth the mass of one carbon-12 atom ____ 30. Why do chemists use relative masses of atoms compared to a reference isotope rather than ...
... ____ 29. Which of the following equals one atomic mass unit? a. the mass of one electron b. the mass of one helium-4 atom c. the mass of one carbon-12 atom d. one-twelfth the mass of one carbon-12 atom ____ 30. Why do chemists use relative masses of atoms compared to a reference isotope rather than ...
The Atom
... a new unit was developed to mass atoms . C-12 was chosen as the reference standard. An atom of C-12 was arbitrarily assigned a mass of 12 atomic mass units. The masses of all other atoms are compared with the mass of this type of carbon atom. According to this definition, an atomic mass unit is defi ...
... a new unit was developed to mass atoms . C-12 was chosen as the reference standard. An atom of C-12 was arbitrarily assigned a mass of 12 atomic mass units. The masses of all other atoms are compared with the mass of this type of carbon atom. According to this definition, an atomic mass unit is defi ...
Chem 1100 Chapter Three Study Guide Outline I. Molar Mass and
... 2 Cu2O (s) + O2 (g) Æ 4 CuO (s) a. 1.80 mol b. 0.225 mol c. 0.900 mol d. 0.450 mol 27. 10 g of nitrogen is reacted with 5.0 g of hydrogen to produce ammonia according to the chemical equation shown below. Which one of the following statements is false? a. Nitrogen is the limiting reagent b. Hydrogen ...
... 2 Cu2O (s) + O2 (g) Æ 4 CuO (s) a. 1.80 mol b. 0.225 mol c. 0.900 mol d. 0.450 mol 27. 10 g of nitrogen is reacted with 5.0 g of hydrogen to produce ammonia according to the chemical equation shown below. Which one of the following statements is false? a. Nitrogen is the limiting reagent b. Hydrogen ...
Chapter 1
... Chemical Reactions *Notes-A ______Chemical Reaction____ is a process in which one or more substances change to make one or more new substances. Milk souring, food being digested, and a match burning are all examples of chemical changes. A. Signs of Chemical Reactions List 4 signs of chemical reactio ...
... Chemical Reactions *Notes-A ______Chemical Reaction____ is a process in which one or more substances change to make one or more new substances. Milk souring, food being digested, and a match burning are all examples of chemical changes. A. Signs of Chemical Reactions List 4 signs of chemical reactio ...
ORGANIC CHEMISTRY BASICS
... o ORGANIC CHEMISTRY Used to be considered chemistry of living things (or things that were once living… like petroleum) o Since it has been demonstrated that organic compounds can be synthesized in laboratories we now just say that Organic chemistry is the Chemistry of Carbon compounds o Examples: pe ...
... o ORGANIC CHEMISTRY Used to be considered chemistry of living things (or things that were once living… like petroleum) o Since it has been demonstrated that organic compounds can be synthesized in laboratories we now just say that Organic chemistry is the Chemistry of Carbon compounds o Examples: pe ...
Topic IX Counting atoms
... • The isotopes of a particular element all have the same number of protons and electrons but different numbers of neutrons. • Most of the elements consist of mixtures of isotopes. ...
... • The isotopes of a particular element all have the same number of protons and electrons but different numbers of neutrons. • Most of the elements consist of mixtures of isotopes. ...
200 Ways to Pass the Chemistry - Home 15-16
... Which of the following atoms forms a stable ion that does not have an octet structure? Li F Na Cl 95. Covalent bonds non-metal with non-metal form when two atoms share a pair of electrons. How many covalent bonds are found in a nitrogen (N2) molecule? 96. Ionic bonds metal with non-metal form when o ...
... Which of the following atoms forms a stable ion that does not have an octet structure? Li F Na Cl 95. Covalent bonds non-metal with non-metal form when two atoms share a pair of electrons. How many covalent bonds are found in a nitrogen (N2) molecule? 96. Ionic bonds metal with non-metal form when o ...
Unit 1
... Nuclear Waste • Radioactive waste produced in nuclear reactors can take hundreds of thousands of years to decay. • Disposal of nuclear waste is done with the intention of never retrieving it. • There are 77 disposal sites around the country. A new one (Yucca Mountain) is being developed for the per ...
... Nuclear Waste • Radioactive waste produced in nuclear reactors can take hundreds of thousands of years to decay. • Disposal of nuclear waste is done with the intention of never retrieving it. • There are 77 disposal sites around the country. A new one (Yucca Mountain) is being developed for the per ...
222-1
... ( non essential exogenous, foreign compounds ) • This applies particularly to chemical compounds which enter the organism and don't serve as nutrient or other essential factors. • Xenobiotics can not be allowed to concentrate beyond limits in a living system, but must be eliminate by excretion. ...
... ( non essential exogenous, foreign compounds ) • This applies particularly to chemical compounds which enter the organism and don't serve as nutrient or other essential factors. • Xenobiotics can not be allowed to concentrate beyond limits in a living system, but must be eliminate by excretion. ...
Chapter 2 Notes
... A. Physical Properties of Matter = things you can observe without changing a substance; Examples: color; measurements; texture B. Density = measure of the mass of an object divided by its volume; usually given in grams per cubic centimeter (g/cm ); Example: average density of liquid water is 1 g/cm ...
... A. Physical Properties of Matter = things you can observe without changing a substance; Examples: color; measurements; texture B. Density = measure of the mass of an object divided by its volume; usually given in grams per cubic centimeter (g/cm ); Example: average density of liquid water is 1 g/cm ...
Atoms, Molecules and Ions
... forms both Fe+ and Fe2+ ions, we need to use the Stock system and call the compound iron(II) nitrate. (b) The cation is Na+ and the anion is HPO42− (hydrogen phosphate). Because sodium only forms one type of ion (Na+), there is no need to use sodium(I) in the name. The compound is sodium hydrogen ph ...
... forms both Fe+ and Fe2+ ions, we need to use the Stock system and call the compound iron(II) nitrate. (b) The cation is Na+ and the anion is HPO42− (hydrogen phosphate). Because sodium only forms one type of ion (Na+), there is no need to use sodium(I) in the name. The compound is sodium hydrogen ph ...
Chemical Equations
... Hypothetical charge use to indicate the degree of oxidation (loss of electrons) Rules in assigning oxidation states: 1) The oxidation state of a free element is zero (0). ex. O2 (g), Ag (s) 2) The oxidation state of a monatomic ion is equal to its ionic charge. (ex. Na+, Cl-3) 3) H has an oxidation ...
... Hypothetical charge use to indicate the degree of oxidation (loss of electrons) Rules in assigning oxidation states: 1) The oxidation state of a free element is zero (0). ex. O2 (g), Ag (s) 2) The oxidation state of a monatomic ion is equal to its ionic charge. (ex. Na+, Cl-3) 3) H has an oxidation ...
RuBisCO and C4 plants
... ‘C3’ Calvin cycle. But this reaction is very slow at low carbon dioxide concentrations. Rubisco also catalyses another reaction – the oxygenation of RuBP. When RuBP reacts with oxygen, it gives a molecule of GP and another of glycollate-2-phosphate. Glycollate-2-phosphate is converted to GP in react ...
... ‘C3’ Calvin cycle. But this reaction is very slow at low carbon dioxide concentrations. Rubisco also catalyses another reaction – the oxygenation of RuBP. When RuBP reacts with oxygen, it gives a molecule of GP and another of glycollate-2-phosphate. Glycollate-2-phosphate is converted to GP in react ...
cps ch 10 notes
... • 1896 – French physicist Antoine Henri Becquerel • Experiments with uranium salts • Thought that the salts – which glow after exposure to ...
... • 1896 – French physicist Antoine Henri Becquerel • Experiments with uranium salts • Thought that the salts – which glow after exposure to ...
Chapter #4 Section Assessment #1 - 33
... 5. According to Dalton’s theory, is it possible to convert atoms of one element into atoms of another? Explain. According to Dalton, atoms can not be changed from one element to another. For example, a carbon atom will always be a carbon atom, forever. ...
... 5. According to Dalton’s theory, is it possible to convert atoms of one element into atoms of another? Explain. According to Dalton, atoms can not be changed from one element to another. For example, a carbon atom will always be a carbon atom, forever. ...
Notes ch 2 the nature of matter
... Electrons are negatively (-) charged and are found outside the nucleus. ...
... Electrons are negatively (-) charged and are found outside the nucleus. ...
File
... Valence electrons (found in the valence shell) usually determine how an atom will react Atoms are stable when their outer energy level is full Atoms can gain or lose electrons to become stable ...
... Valence electrons (found in the valence shell) usually determine how an atom will react Atoms are stable when their outer energy level is full Atoms can gain or lose electrons to become stable ...
Atoms, Molecules and Ions
... (b)The cation is K+ and the anion is PO4-3 (phosphate). Because potassium only forms one type of ion (K+), there is no need to use potassium (I) in the name. The compound is potassium phosphate. (c) The cation is NH4+1 (ammonium ion) and the anion is CO3-2 . The compound is ammonium carbonate. ...
... (b)The cation is K+ and the anion is PO4-3 (phosphate). Because potassium only forms one type of ion (K+), there is no need to use potassium (I) in the name. The compound is potassium phosphate. (c) The cation is NH4+1 (ammonium ion) and the anion is CO3-2 . The compound is ammonium carbonate. ...
Isotopic labeling
Isotopic labeling (or isotopic labelling) is a technique used to track the passage of an isotope, or an atom with a variation, through a reaction, metabolic pathway, or cell. The reactant is 'labeled' by replacing specific atoms by their isotope. The reactant is then allowed to undergo the reaction. The position of the isotopes in the products is measured to determine the sequence the isotopic atom followed in the reaction or the cell's metabolic pathway. The nuclides used in isotopic labeling may be stable nuclides or radionuclides. In the latter case, the labeling is called radiolabeling.In isotopic labeling, there are multiple ways to detect the presence of labeling isotopes; through their mass, vibrational mode, or radioactive decay. Mass spectrometry detects the difference in an isotope's mass, while infrared spectroscopy detects the difference in the isotope's vibrational modes. Nuclear magnetic resonance detects atoms with different gyromagnetic ratios. The radioactive decay can be detected through an ionization chamber or autoradiographs of gels.An example of the use of isotopic labeling is the study of phenol (C6H5OH) in water by replacing common hydrogen (protium) with deuterium (deuterium labeling). Upon adding phenol to deuterated water (water containing D2O in addition to the usual H2O), the substitution of deuterium for the hydrogen is observed in phenol's hydroxyl group (resulting in C6H5OD), indicating that phenol readily undergoes hydrogen-exchange reactions with water. Only the hydroxyl group was affected, indicating that the other 5 hydrogen atoms did not participate in these exchange reactions.