Chemistry: Structure and Properties (2nd Edition)

Chapter 2

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Laws and theories can be tested by a set of ... more

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The results are by the law of multiple proportions... more

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The products obtained after the combustion of a ... more

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  The oxygen-to-carbon ratio calculated for the ... more

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; Number of atoms is converted to moles by ... more

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3 ; The excess electrons can be calculated by ... more

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The law of definite proportions states that the ... more

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; The fraction of each Mg isotope is calculated ... more

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; The conversion of percentage natural abundances... more

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; 107 atoms ; Isotopes have the same atomic ... more

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; The moles of copper (Cu) are calculated using ... more

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; The mass of titanium (Ti) present in is ... more

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Atomic radius refers to the size of the atom or ... more

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; The amount of diamond (in ) is calculated using... more

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; Avogadro's number gives the number of particles... more

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The atomic mass value will be close to the mass of... more

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; Calculate the number of moles of Titanium ... more

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; Volume of the rod is calculated using , where r... more

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The number of atoms present in a given sample ... more

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An observation is what an individual notices while... more

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A particular compound will contain all the ... more

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For two different compounds made up of the same ... more

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The discovery of protons was done by Rutherford ... more

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The charge on each drop must be an integral ... more

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The count of neutrons in an atom is equal to the ... more

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The standard form of representation of an element ... more

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The atomic number of chromium is 24. If it ... more

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The atomic mass of the sample must be close to the... more

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The given graphs represent the relative intensity ... more

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The sample with more number of moles will have ... more

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A cube of edge length 0.20 cm will have a volume ... more

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This answer can be possible only when the volume ... more

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The molar mass of Chromium (Cr) = . ; The molar ... more

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This statement explains the fundamental properties... more

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The branch of science that deals with atoms, ... more

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Anything that occupies space and has mass is ... more

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Solids have a definite volume and a definite shape... more

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Pure substances are composed of only one type of ... more

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Elements are composed of only one type of atom, ... more

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Homogeneous mixtures are those mixtures whose ... more

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A scientific approach to knowledge is based on ... more

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A hypothesis is a proposal or interpretation of ... more

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Antoine Lavoisier (1743-1794), a french chemist, ... more

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John Dalton (1766-1844) formulated a theory, which... more

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The above phrase is quite misleading in scientific... more

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The history dates back to almost 2000 years. It ... more

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In a chemical reaction, the mass of the reaction ... more

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  All samples of a given compound always contain ... more

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 If two elements can combine to form more than one... more

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John Dalton's atomic theory states that-atoms are ... more

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J.J. Thomson discovered the electron by conducting... more

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It is an experiment designed by Millikan to deduce... more

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The plum pudding model of the structure of an atom... more

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To confirm the Thomson model of atoms, Rutherford ... more

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After performing the gold foil experiment, ... more

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It happens because its entire mass is contained in... more

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Protons, neutrons, and electrons:  Mass(Kg)Mass(... more

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One of the basic properties of an element is that ... more

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Atomic number is equal to the number of protons ... more

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International Union of Pure and Applied Chemistry... more

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Isotopes of an element are the different atoms ... more

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Isotopes can be represented as follows, and , Here... more

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Ions are the charged species.Cations are the ... more

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The atomic mass of an atom is the average mass of ... more

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Mass spectrometer is an instrument used to measure... more

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1 mole is defined as the collection of Avagadro's ... more

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1 mole of an element is the collection of of that... more

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; A mixture can either be homogeneous or ... more

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Aluminium is an element and a pure substance as it... more

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Iron is a pure substance and an element as it is ... more

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mixture  ; Apple juice has water and sugar as the ... more

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Mixture ; Coffee is a solution of milk, sugar, and... more

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The substance d is composed of the same type of ... more

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This substance contains only one type of particle... more

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An observation is any phenomenon or an activity ... more

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The reactivity for chlorine and gas is observed by... more

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The observations on the distant galaxies specifies... more

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; The mass of reactants in a chemical reaction is... more

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; The chemical reaction of gasoline with oxygen ... more

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The results are not in accordance with the law of ... more

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The mass ratio of chlorine to sodium is similar in... more

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; According to the law of definite proportions, ... more

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; The law of definite proportions states that two... more

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of Osmium to Oxygen mass ratio = 1:2 ; When ... more

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The ratio between palladium and the sulfur ... more

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Mass of oxygen per gram of sulfur in SO2 = Mass of... more

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Mass of fluorine per gram sulfur in SF6 = Mass of ... more

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John Dalton's theory states that all atoms of one ... more

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Dalton's theory states that one element has only ... more

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Rutherford proposed a theory after doing -particle... more

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Most of the mass of an atom is confined to its ... more

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. ; This law gives a basic idea of how the ... more

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. The number of electrons in each drop is 3, 6, 4,... more

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Protons and electrons have equal and opposite ... more

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.Protons and electrons have equal but opposite ... more

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6, 8, and   ; The carbon isotope used for the ... more

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92, 143, and ; Uranium-235, with the atomic number... more

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; Mass spectrum shows the relative intensity of ... more

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; In the mass spectrum for Mg, the relative ... more

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Exists in only one isotope.The atomic mass is ... more

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No.The isotopes have different masses.  ; Copper ... more

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.Antimony(Sb).  ; The natural abundance of all the... more

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.Cerium (Ce).  ; The percentage natural abundance ... more

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..  ; Calculating the natural abundance of ... more

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; The natural abundance of the Si-30 isotope is ... more

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; Using the intensity of each isotope given in ... more

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; Using the intensity of each isotope given in ... more

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; The number of sulfur atoms is determined by ... more

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; For 1 atom of Al, the number of mole is equal ... more

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; To find the number of atoms of silver present, ... more

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; The number of moles of Platinum (Pt) present in... more

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; The unit conversion between mass in and is ... more

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; Convert the mass of helium (He) into using ... more

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; One mole of platinum (Pt) contains the number ... more

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; Calculate the mass of 1 Xe atom by dividing the... more

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; The Law of Conservation of Mass states that the... more

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; The intensities observed from the graph are as ... more

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; The observed intensities of Mercury (Hg) ... more

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; The number of neutrons is calculated using ... more

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Mass number = 28Number of protons (p+) = 14Charge... more

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; A penny has thickness =Avogadro's number = On ... more

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Each person would be a billionaire. ; Consider ... more

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; The volume of the sphere is determined using ... more

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; a is the edge length of the cube and is equal ... more

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; The total number of atoms in the sample is The ... more

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; In common brass metal alloy,The mass of the ... more

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; The mass of lead can be calculated by the ... more

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; The given gold mass is and gold.Convert these... more

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; Silver has two isotopes Ag-107 and Ag-109. One ... more

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1:0.4210 ; The molar mass of oxygen is and molar ... more

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; Let the fraction of in the given sample be .... more

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; The atomic mass of the zinc contaminated sample... more

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NO2  ; Let the formula of compound be NxOy.The ... more

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; Let the Abundance of Isotope be . Natural ... more

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. ; 1 mole of sand grains will contain grains. ... more

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No ; The jar is sealed, which means there is no ... more

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Sublimation is a physical change, which means ... more

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; The homogeneous mixture shows uniform ... more

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An observation is something that an individual or ... more

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It ensures that the mass of an atom in amu is ... more

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; A solid element has atoms of one kind. A ... more

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Mass number of each isotope- 10, 11 Atomic mass of... more

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Mass of electrons - Mass of protons - Mass of ... more

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