How many atoms of cobalt equal a mass of 58.93g

Q: Tin, element 50 on the periodic table, has 10 stable isotopes. 117^Sn makes up 7.687% of naturally…

A: Using the formula moles of Sn117 is calculated as,

Q: How many moles of atoms are in each elemental sample? 1.34g Zn 24.9 g Ar 72.5g Ta 0.0223g Li

A: Using the molar equation- n: number of moles of the elemental sample. m: given mass of the…

Q: Calculate the mass, in grams, of each sample.a. 1.1 * 1023 gold atomsb. 2.82 * 1022 helium atomsc.…

A: Given data: Avogadro's number NA, 6.023×1023atoms Convert first the number of atoms to moles using…

Q: Calculate the mass in grams of each elemental sample.(a) 1.32 * 1020 uranium atoms(b) 2.55 * 1022…

A: Mole is defined as the ratio of given mass and molar mass. The unit of mole is mol. It is utilized…

Q: How many atoms of copper are in a pure copper penny that weighs 2.15 g? (1 amu = 1.6605 10-24 g)

A: Given that the mass of copper penny is 2.15 g. The number of moles can be calculated using the given…

Q: What is the amount, in moles, of each elemental sample? 0.211 g Li

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Q: Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48…

A: Given: Percentage of zinc by mass= 37.0% density of zinc= 8.48 g/cm3 Total volume of the fitting=…

Q: Question attached

A: When two atoms have same atomic number and different mass number, they are called as isotopes.

Q: A sample of aluminum foil contains 7.80×10^23 atoms. What is the mass of the foil?

A: A sample of aluminum foil contains 7.80×1023 atoms. The mass of the foil is to be calculated.

Q: 1. Potassium naturally consists of 93.10% K- 39 and 6.90% K-41. K-39 has an atomic mass of 38.963707…

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Q: if a penny is made of 2.56 grams of copper, how many atoms of copper are in the penny?

A: Answer:- This question is answered by using the simple concept of calculation of number of atoms…

Q: A sample of aluminum foil contains 4.50×1023 atoms.4.50×1023 atoms. What is the mass of the foil?

A: Given,  Number of atoms of Al foil = 4.50 x 1023 atoms  Mass of the Al foil = ?

Q: how many gold atoms are in a 13.5g sample of gold? the density of gold is 19.3g/cm3

A: Total moles present of a sample = Given weight Atomic weightTotal atom present in a sample = Total…

Q: One atom of an unknown element has a mass of6.66 × 1 0 -23 g. What is the identity of this element?

A: Molar mass is the mass of Avogadro's number (6.022×1023) atoms.

Q: 2.5 million atoms of particular element have a mass of 8.33X10^-16 grams. What is this element?

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Q: Calculate the number of atoms in sample. 14.955 g Cr

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48…

A: Here we have:Volume of common brass = 115.0 cm3Density of common brass = 8.48 g/cm3As we know:

Q: A sample of aluminum foil contains 6.50×1023 atoms.6.50×1023 atoms. What is the mass of the foil?

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: A cube of solid aluminum has a volume of 8.87×103 cm3 and a density of 2.6989g/cm3. However, the…

A: Initial volume V1 = 8.87 x 103 cm3.Density, d = 2.6989 g/cm3.Initial mass, m1 = V1 x d = (8.87 x 103…

Q: Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48…

A: Volume of brass 115.5 cm3convert this volume of brass into mass using density(d) = 8.48 g/cm3density…

Q: If a penny is made of 2.56 grams of Copper, How many atoms of copper are in the penny?

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Q: [The volume of a sphere is (4/3)πr3 and the density of copper is 8.96 g/cm3.] A pure copper sphere…

A: Number of atoms in a mole of any substance is equal to Avogadro's number.

Q: Calculate the number of atoms in sample. 12.899 g Pt

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: How many atoms of sulfur are in 0.78 grams of Sulfur?

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Q: Potassium naturally consists of 93.10% K-39 and 6.90% K-41. K-39 has an atomic mass of 38.963707…

A:

Q: A pure titanium cube has an edge length of 2.76 in. How many titanium atoms does it contain?…

A: Here, we have to calculate number of titanium atoms.

Q: Calculate the mass, in grams, of sample.  7.9x10^21 uranium atoms

A: GIVEN: To solve: Mass in grams of uranium atom sample=?

Q: Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48…

A:

Q: Calculate the mass, in grams

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Q: 90) Calculate the mass, in kg, of each sample a) 7.55x1026 cadmium atoms b) 8.15x1027 nickel atoms…

A: Mass of substance is quantity of matter present in substance. Kilogram is unit of mass and denoted…

Q: A pure titanium cube has an edge length of 2.78 in. How many titanium atoms does it contain?…

A: Given information: Edge length of the cube = 2.78 in Density of titanium = 4.50 g/cm3

Q: a silver quarter has a mass oif 6.19 grams.It is 13.6 percent copper the remainder is silver.how…

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Q: How many grams of Si are there in a sample of Si that contains 8.23×1023 atoms? grams

A: One mole of any sample of compound contains approximatly 6.022 x 1023 atoms or molecules (called as…

Q: What is the mass in grams of 8.22 x1023 magnesium atoms, each having a mass of 24 amu? 1 amu =…

A: Since the number of atoms given is 8.22 x1023

Q: A pure copper sphere has a radius of 0.935 in. How many copper atoms does it contain? [The volume of…

A: First convert the given radius in inch to cm. 1 inch = 2.54 cm, then

Q: 320 g of a certain chemical element contains 4.82 x 1024 atoms. Find the name of the element. MAr…

A: Given 320 g of a certain chemical element contains 4.82 x 1024 atoms

Q: How many atoms of 1°B are there in a 3.51 gram sample of this particular isotope? 1.72 x 1024 atoms…

A: Since the atomic mass is always written in the top left of the symbol of molecule  hence the atomic…

Q: Determine the mass of 3.01 × 10^20 atoms of Sulfur.

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Q: An 0.355 mol sample of a metal has a mass of 24.75 g. What is the mass of one atom of the element?…

A: Given: Moles of metal = 0.355 mol. And the mass of metal sample = 24.75 g.

Q: Calculate the mass of 1.23×10241.23×1024 helium atoms.

A: 1 mole of a substance contains Avogadro number of atoms.

Q: What is the mass of 11 cobalt (Co) atoms?  Cobalt info: Atomic Number 27, Mass Number 58.933

A: The question is based on mole concept. We have to determine mass of Cobalt in the given number of…

Q: A sample of aluminum foil contains 8.00×10^23 atoms. What is the mass of the foil? mass of foil…

A: The number of moles for a given compound or a molecule refers to the ratio of its mass to the…

Q: How many atoms are in 143 grams of aluminum

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Q: The element argon has three isotopes and an average atomic mass of 39.948 u. Idenitfy the most…

A: Given that, Average  Atomic mas s of At=39.948 amu

Q: the isotope Si-28 has a mass of 27.977amu .Calculate the number of moles in 14 grams of Si-28

A: We will use the formula to calculate number of mole Number of moles = Weight (g) / Molar mass Molar…

Q: Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48…

A:

Q: Calculate the number of atoms in sample. 0.082 g Sr

A: given sample is 0.082 g of Sr we know 1 mol has 6.022 × 1023 atoms

Q: How many protons neutrons and electrons are present in a single atom of bromine-79?

A: Since the atomic number of bromine = 35  hence number of electrons = Atomic number = 35

Q: Did you ever want to know what you're made of? The table below shows the elemental break down of the…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.