Thomson's experiments with a cathode ray tube demonstrated that protons are positively charges particles. the mass of an atom is concentrated in the nucleus. the charge of the electron is-1.60 x 1019 C. cathode rays are negatively charged particles.

Q: Explain how J. J. Thomson’s determination of the charge-to-mass ratio of the electron led to the…

A: Thomson Atomic model introduced us to the world of subatomic particles. He discovered the first-ever…

Q: Which statement about subatomic particles are true? If an atom has an equal number of protons and…

A: This is a true statement because the charge of the proton and the electron are equal in magnitude…

Q: What is the mass number of an ion with 106 electrons, 159 neutrons, and a +1 charge? Express your…

A: Since it is an ion, the number of electrons is calculated with the expression given below in which…

Q: What is the radius (in cm) of a pure copper sphere that contains 1.14 * 1024 copper atoms? [The…

A: Given information:

Q: Distinguish among the types, locations, and charges of subatomic particles.

A: Protons, neutrons are electrons  that are the three fundamental subatomic particles present in the…

Q: Two samples of carbon tetrachloride are decomposed into their constituent elements. One sample…

A: Given: Two samples of carbon tetrachloride are decomposed. One sample produces 38.9 g of carbon and…

Q: In the symbol below, x is, A the mass number B the number of electrons the number of neutrons D the…

A: Mass number is the total of number number of protons and neutrons in an atom. Atomic number…

Q: Uranium-235 is used in nuclear fission. Determine the number of protons and the number of neutrons…

A: Atomic symbol of element gives information about the chemical symbol, atomic number and mass number…

Q: The amount of carbon-14 in ancient artifacts and fossils is often used to establish their age.…

A: Given, the amount of Carbon-14 in ancient artifacts and fossils is often used to establish their…

Q: . Polonium-210 is an alpha-emitting radioactive isotope that causes irreversible damage to organs…

A: Two questions based on nuclear reactions and general chemistry that are to be accomplished.

Q: In an experiment it was found that the total charge on an oil drop was 5.93 3 10218 C. How many…

A: Millikan estimated an electron's charge. All of the drops had charges that were multiples of 1.6 x…

Q: 2.77 Identify the following as elements or compounds: NH3, N2, Sg, NO, CO, CO,, H2, SO2.

A: Matter is any substance that occupies space and volume. Matter is classified into pure substances…

Q: Which of the three subatomic particles was discovered first—the proton, neutron, or electron? Which…

A: All matter is composed of atoms and atoms are made up of three subatomic particles- protons,…

Q: in chemistry class, a group of students dtermined the mass-t-charge ratio for an electron to be 5.64…

A: Given: mass to charge ratio = 5.64×1012 kg/C Charge of electron = 1.605×10-19 C   Note:There is typo…

Q: Two samples of carbon tetrachloride are decomposed into their constituent elements. One sample…

A: The ratio of weights in the first sample is 448/ 38.9 = 11.5: 1. The no of moles of carbon and…

Q: What is the edge length (in cm) of a titanium cube that con- tains 2.55 x 1024 titanium atoms? The…

A: Calculate the number of moles as follows, Number of moles =2.41×10246.022×1023=0.4×10=4 moles Now,…

Q: An atom of rhodium (RhRh) has a diameter of about  2.7×10−8cm2.7×10−8cm.   Part A: What is the…

A: "Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The radius of an atom of gold (Au) is about 1.35 Å. (a) Express this distance in nanometers (nm) and…

A: It is given that :Radius of gold atom = 1.35 Å

Q: How many electrons are in gold atom? Does protons also take part in chemical reaction?

A: Gold is a chemical element with the symbol Au and atomic number 79, making it one of the higher…

Q: The charge to mass ratio of an electron was determined from Thomson's cathode-ray tube experiment to…

A: From Thomson's cathode ray ride experiment we determine charge to mass ratio of an electron.…

Q: the history of the discovery of hydrogen and what properties they observed to identify it

A: Position of hydrogen in periodic table:   Hydrogen is regarded as rogue / disputable element because…

Q: A platinum atom has a radius of 177 pm. If you could string platinum atoms like beads on a thread,…

A: Given that, Radius of Pt-atom = 177 pm =177×10-12 m= 177×10-10 cm =1.77×10-8 cm Length of necklace =…

Q: Two samples of sodium chloride are decomposed into their constituent elements. One sample produces…

A: Given: Two samples of sodium chloride. One sample gives 6.98 g of sodium and 10.7 g of chlorine.…

Q: It is well known that the element magnesium has three naturally occurring isotopes. Mg-24 represents…

A: It is clearly indicates that the Mg-24 posses a natural abundance of 79% along with other isotopic…

Q: Calculate the mass of a gold-197 atom using the information from question 9 and the masses of the…

A: The ratio of mass to the volume of the solution is known as density.

Q: 4. Who discovered the neutron in 1932? A. Democritus C. Ernest Rutherford B. James Chadwick D.…

A: Mass number Mass number gives the number of protons and neutrons in an atom.

Q: May I ask, Why and how does the mass number change in different questions?  For example, in the…

A: Mass number and atomic mass of an atom are two different terms. Mass number is defined as the sum of…

Q: Two samples of sodium chloride with different masses were decomposed into their constituent…

A: The law of constant composition or law of definite proportions or law of definite composition states…

Q: The mass of a single copper atom is 1.06×10-22 grams. How many copper atoms would there be in 177…

A: The mass of a single copper atom is 1.06×10-22 grams. How many copper atoms would there be in 177…

Q: Two samples of carbon tetrachloride are decomposed into thier constituent elements. One sample…

A:

Q: The ratio for an mass-to-charge electron is 5.64x10−12 kg/C. In another experiment, using Millikan's…

A: Millikan did an experiment to determine the mass to charge ratio for an electron which was known as…

Q: The smallest unit of charge is -1.6 x 10-19 C, which is the charge in coulombs of a single electron.…

A:

Q: How many protons and electrons are there in a neutral atom of each of the following elements? Part A…

A: The atomic number of an element tells about the number of electrons and protons present in an…

Q: (1. On the second floor of Kent Laboratory a chemistry student in 111B finds that 15.20 g of…

A: Given information:Mass of nitrogen = 15.20 gMass of oxygen for different compounds = 17.37 g, 34.74…

Q: A penny has a thickness of approximately 1.0 mm. If you stacked Avogadro’s number of pennies one on…

A: The total distance covered by 6.022×1023 of 1.0 mm of penny is calculated as shown below. The total…

Q: Since 1800, almost 200 sincere but erroneous reports ofthe discovery of new chemical elements have…

A: The chemical element is a substance which cannot decompose further into simpler forms by chemical…

Q: Currently, the atomic mass unit (amu) is based on being exactly one-twelfth the mass of a carbon-12…

A: The mass of an atom is not only due to the sum of the masses of the neutrons, protons and electrons…

Q: 1) A 1.0-g sample of carbon dioxide ( CO2) is fully decomposed into its elements, yielding 0.273g of…

A: Since there are multiple questions, we answer only first question as per our policy, that is, no. 1.…

Q: if an average fluorine atom has a mass of 3.82 x 10-23 g, what is the mass of a magnesium atom in…

A:

Q: If a row of approximately 5.0 x 107 atoms measured 1.0 cm, how long would a row of 6.02 × 1023 atoms…

A: Given is row of atoms, 1.0 cm = 5.0×107 atoms 6.02×1023 atoms = ?

Q: In the periodic table, calcium, element 20, is surrounded by elements 12 magnesium , 19 potassium,…

A: The most resemple element of calcium atom is magnesium and Strontium.

Q: A piece of copper contains 6.7×108 atoms. What is the mass of the sample, in units of kilograms

A: molar mass of Cu = 63.55 g/molThis is mass of 6.022×1023 atomsuse:mass of 1 atom = molar…

Q: In the periodic table, do the chemical properties change more than through a period or through a…

A: Periodic table is table in which the elements are arranged based on there electronic configurations.…

Q: The amount of carbon-14 in ancient artifacts and fossils is often used to establish their age.…

A: SOLUTION: Step 1: The atomic number of carbon is 6. The number of protons is equal to its atomic…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.