Consider a rectangular piece of printer paper that is 8.5’’ x 11’’ (’’ denotes inches). In order to gain an appreciation for just how small atoms are, we're going to calculate how many hydrogen atoms we can put around the perimeter of this piece of paper. Consider a hydrogen atom with a radius of about 0.5 x 10-10 m. How many hydrogen atoms are required to a. Fill up the longer side of the computer paper?

Q: 1. What is the difference between carbon-13 and carbon-14? a. The number of electrons b. The number…

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Q: 4. The radius of the nucleus of an oxygen - 16 atom is approximately 3.0 fm (femtometers, 1 m = 1015…

A: “Since you have asked multiple question, we will solve the first question for you . If you want any…

Q: In 1961, scientists agreed that the atomic mass unit (amu) would be defined as 1/ 12 the mass of an…

A: Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: The diameter of a silicon atom is 2.34 x 10-8 cm. If the silicon atoms were placed next to each…

A: Given:  Diameter of silicon = 2.34 x 10-8 cm Width of paper = 8.5 inch

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: a 500-mg antacid tablet has 105 mg calcium carbonate (MW = 84.3139 g/mol). What is the %(w/w) of…

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Q: The U.S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: The number of lead atoms can be calculated as follows:

Q: A) If a cube from this element contains 2.35x1022 atoms, calculate the mass ( in grams)

A: Mass of 2.35×1022 atoms can be calculated by knowing the fact that one mole contains 6.022×1022…

Q: (a) Describe Rutherford's experiment and how it led to the structure of the atom. How was he able to…

A: a)

Q: in the star wars series, the death star is a spherical space station and weapon with a diameter of…

A: The diameter of death star is 99 miles. The diameter of solid iron sphere is 6.23 times larger than…

Q: Part I: Build atoms and ions.…

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Q: To the right is a representation of 50 atoms of a fictitious element called westmontium (Wt). The…

A: A mass spectrum is an intensity vs. m/z (mass-to-charge ratio) plot representing a chemical…

Q: Consider a rectangular piece of printer paper that is 8.5’’ x 11’’ (’’ denotes inches). In order to…

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Q: Suppose the diameter of a type of atom is 2.22 x 10-7 mm. A coin has diameter 1.20 cm. Suppose the…

A: If we divide the diameter of a coin by the diameter of an atom we will get the no. of atoms.  Given…

Q: What is an atomic mass unit? Why is it necessary to introduce such a unit?

A: Matters are the substances that possess some mass and volume. These are formed by joining very small…

Q: How many atoms of lead are required to cover a 37.0 cm by 55.0 cm area with a sheet of lead that is…

A: The required volume to cover =  37.0 cm×55.0 cm×0.142 cm…

Q: What is the average atomic mass of element X if it exists as 19.90% with a mass of 10.18 and 80.10%…

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Q: Which statements are inconsistent with Rutherford’s nucleartheory as it was originally stated?…

A: Given statements, a. Since electrons are smaller than protons, and since a hydrogen atom contains…

Q: In the summer of 2010, platinum (195.078 g/mol) sold for $1,500/oz. One ounce is equal to 28.35 g.…

A: Given: Molar mass of platinum = 195.078 g/mol Cost of platinum            = $1500/oz One ounce…

Q: 2. Consider the element Uranium, U. Determine which isotopes are naturally occurring. Look up the…

A: The average atomic weight from the given mass number and natural abundance of each isotope of the…

Q: Cerium is the most abundant rare earth metal. Pure cerium ignites when scratched by even a soft…

A: The Isotopes given are Ce-136(atomic mass=135.907 amu), Ce-138(atomic mass=137.905 amu),…

Q: Pick an element from the Periodic Table AFTER number 25, Mn, and do not pick a diatomic element.…

A: 1. The symbol of element after Mn is Fe  2. The molar mass of Fe is = 55.845 g/mol

Q: The diameter of a U.S. dime is 17.9 mm, and the diameter of a silver atom is 2.88 A° . How many…

A: The diameter of a U.S. dime is 17.9 mm = 0.0179  meter  diameter of a silver atom is 2.88 A°  =…

Q: The atomic mass of fluorine is 18.998 amu, and its mass spectrum shows a large peak at this mass.…

A: The isotope of fluorine having a mass of 18.998 amu is highly abundant by a very large amount, which…

Q: May you please solve this and explain it? A second compound, which contains two atoms of nitrogen…

A: The empirical formula is the chemical formula of any compound that represents the proportions of…

Q: Imagine an alternate reality. The Thomson cathode ray experiments arrived at a charge to mass ratio,…

A: Here, we have to determine mass of electron.

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: - Argon has three naturally occurring isotopes: 0.337% 36Ar, 0.063% 38Ar, and 99.60% 4ºAr. Estimate…

A: Given : There are 3 naturally occurring isotopes of Argon i.e Ar.

Q: (a) Atoms are very small compared to objects on the macroscopic scale. The radius of a vanadium atom…

A: (a)Calculate the radius of vanadium atom in centimeters and meters:

Q: Consider a rectangular piece of printer paper that is 8.5’’ x 11’’ (’’ denotes inches). In order to…

A:

Q: Describe what you think happens on an atomic scale when you push a pencil across a piece of paper…

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Q: Chemists generally use the term atomic weight rather than average atomic mass. We state in the text…

A: 1. Atomic mass indicates mass of an atom. Single atom has set of protons , neutrons and electrons.…

Q: If the density of indium is 7.31 g/cm², how many atoms are there in a indium piece of 30 dm wide, 5…

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Q: 1. Use paragraph 1 and 2 to describe how the element with 115 protons was created. 2) The newly…

A: Elements are the pure substances that contain atoms of same type. It is identified by number of…

Q: B) The average atomic mass of chlorine is 35.453. Does this mean that there are just two stable…

A: In order to explain the answer for the above question we have to first understand the given question…

Q: If you wanted to make an accurate scale model of the hydro- gen atom and decided that the nucleus…

A: No, the end result will not be much smaller than 106 mm. This is because it is an hypothetical model…

Q: A bicycle part made of titanium, Ti, has a volume of 32 cm . Titanium has a density of 4.50 g/cm .…

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Q: The radius of a Niobium atom is 143 pm(b) The mass of a single niobium atom is 1.54×10-22 g. Suppose…

A: Given here,the radius of a Niobium atom is = 143 pm1 pm = 1e-12 m1 m = 100 cmSo,Diameter of 1…

Q: A cylindrical piece of pure titanium (Ti, density=4.506 g/cm^3) has diameter d=1.15 cm and length…

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Q: Naturally occurring cobalt consists of only one isotope, 59Co, whose relative atomic mass is…

A: Given, Atomic mass of 59Co = 58.9332 Atomic mass of 60Co = 59.9338 Given mass of Co = 1.5886 g…

Q: The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: The U. S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants…

Q: In a chemistry class, a group of students determined the mass-to-charge ratio for an electron to be…

A: The charge on the particle and the mass of the particle is used to identify the subatomic particles…

Q: The average mass of a carbon atom is 12.011.  Assuming you were able to pick up only one carbon atom…

A: The average mass of a carbon atom is 12.011. There are three isotopes of carbon. C-12, C-13, and…

Q: 1. A solid circular cone made of pure platinum (d = 21.45 g/cm3 ) has a diameter  of 2.75 cm and…

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Q: The U.S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: Density is a physical quantity that can be determined with the help of the mass and volume of the…

Q: Since 1983, pennies have been made with zinc and plated with copper. Prior to 1983, pennies were…

A: Since from 1793-1837 pennies were made up of pure copper therefore, if you had a penny from 1800…

Q: How many atoms are contained in a titanium sphere having a diameter of 12.0 mm? The density of…

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Q: You have an unknown element consisting of two isotopes, one with mass 36.9659 amu (24.22%), and one…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

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.