Explain the difference between the mass number and theatomic mass of an element.

Q: Use chemical symbols together with atomic number and massnumber to express the subatomic composition…

A: Dear student I have given answer to your question in the image format.

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: What are the labels on the axes of a mass spectrum?

A: Solution: We know a typical mass spectrum is a plot of relative abundance (%) vs m/z.

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

A:

Q: What pattern exists between an atom's mass and its vertical position in the periodic table? What…

A:

Q: What kind of information can be determined from a mass spectrum?

A: Mass spectrum was obtained from mass spectrometer. Mass to charge ratio of positively charged atoms…

Q: Calculate the mass, in kg, of sample. 8.15x10^27 nickel atoms

A: The mass of sample. 8.15x10^27 nickel atoms is to be calculated

Q: a. 1.51 x 1015 atoms of Si to mol of Si

A: Given number of atoms can be easily calculated to moles by using avogadro number.

Q: n your own words, define or explain these termsor symbols: (a) ; (b) particle; (c) isotope; (d) ;(e)…

A: Chemistry is the study of elements and compounds comprised of atoms, molecules or ions. It involves…

Q: Describe the steps used to convert the mass of an element to the number ofatoms of the element.

A: The steps that are used to convert the mass of an element to the number of atoms of the element has…

Q: Show how the mass spectrometer could be used to determine the relative atomic mass of an atom

A: Introduction: Mass spectrometer is a technique that is used to measure the mass to charge ratio of…

Q: What is the mass of 1.6x10^21 argon atoms?

A: Molar mass of Argon is 39.95 g/mol i.e 1 mole of argon = 39.95 g of Argon Number of atoms of Argon…

Q: Determine the number of atoms of mercury in a 8.332 g sample of pure mercury

A: First Calculate mole= weight/molar mass Atomicity =1 because Mercury excuse as Hg in nature so 1…

Q: Describe the structure of the atom, including the locations of the subatomic particles.

A: The atomic structure means that how and where  the sub-atomic particles are arranged inside the…

Q: What is atomicity

A: Atomicity is a term which is used to represent the number of atoms present in any molecule or…

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%…

A:

Q: what is the mass element of calcium?

A: Mass of an element is represented by A in symbolic representation of element.

Q: "Lithium has two isotopes. Lithium-6 has an actual mass of 6.015 g/mol and lithium-7 has a mass of…

A: Given: There are two naturally occurring isotopes of lithium. Molar mass of isotope 1 i.e. lithium-6…

Q: How to convert from mass percent to mass of an element ?

A: We can calculate mass of element if we have have information about mass percent and total mass.

Q: Calculate the mass of 500. atoms of  fluorine (F). Mass =______  g

A: One mole of a substance is equal to 6.023 x 1023 units of that substance  (such as atoms, ions or…

Q: 5- Atoms of the same element with different mass numbers are called..

A:

Q: How would you determine the accuracy of an atomic mass?

A: The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of…

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: A 67.2 g sample of a gold and palladium alloy contains 3.33*10^23 atoms.  a) What is the mass % of…

A: Given data,Mass of alloy=67.2gTotal number of atoms=3.33×1023atoms

Q: Why must atomic masses be weighted averages rather than conventional average values?

A: atomic mass is mass of atom which have amu unit .

Q: Calculate the mass, in kg, of sample.  7.55x10^26 cadmium atoms

A:

Q: Calculate the number of atoms there are in a sample of aluminum that with a mass of 81g

A: Given that:  Mass of Aluminium(Al) = 81g  Molar mass of Aluminium = 27g/mol So, moles of Al =…

Q: What is the atomic weight of Nitrogen?

A: Given Nitrogen Atom. We need to determine the atomic weight of Nitrogen.

Q: What is the atomic weight of the element chlorine?

A: Average atomic weight of chlorine element is 35.5 amu. Chlorine atom has two isotopes Cl35 and Cl37…

Q: In ions why not separated by mass only and  why not separated by charge only?

A: Mass spectrometer works in four stages which is ionisation, acceleration, Deflection and detection.…

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: What is the mass number of Hg from the periodic table?

A: Answer:- Mass number:- It is defined as the total number of proton and neutron or can be defined as…

Q: How many moles of aluminum do 1.42 x 10^24 aluminum atoms constitute?

A: 1 mol of any atom has 6.023 ×1023 number of atoms .

Q: What is the average mass of the atoms ? (Copper-63 has a mass of 62.92960 amuamu, and copper-65 has…

A: The average atomic mass of the element is defined as the sum of the mass of all the isotopes present…

Q: What is the average mass of a single aluminum atom in grams

A: We know that mass of 1 mole of Aluminium atoms is equal to 27g Also 1 mole of aluminum atoms means…

Q: What is the mass of 6.77x10^24 nitrogen atoms?

A:

Q: atomic mass of an element related to its molar mass?

A:

Q: A sample of Si weighs 54.8 grams. Will a sample of Ba that contains the same number of atoms weigh…

A: Answer: Since, 1 mole is always equal to 6.022×1023, therefore same number of atoms will always be…

Q: 49.4g of Cr represents how many atoms?

A: Number of Atoms = moles of Atom X Avogadro's number  Avogadro's number  = 6.022 X 1023  And moles of…

Q: Calculate the mass, in kg, of sample. 1.22x10^27 manganese atoms

A:

Q: A sample of aluminum foil contains 5.70 x 1023 atoms. What is the mass of the foil?

A:

Q: Calculate the mass, in grams, of sample. 1.1x10^23 gold atoms

A: Given: Gold sample with 1.1x1023 number of atoms.

Q:

A:

Q: The number of protons, neutrons, and electrons in a nucleus of Br-80 is

A: The nucleus given is Bromine, Br-80.

Q: A 3.6 g sample of lithium contains how many atoms?

A: Since moles = mass / molar mass  Given : mass of Li i.e lithium = 3.6 g And since molar mass of Li =…

Q: How many atoms of cobalt equal a mass of 58.93g

A: Molecular mass of cobalt = 58.93   Number of moles can be shown below

Q: Calculate the mass of sample. 72.1 mmol SO2

A: Given:  The number of moles of SO2=72.1  mmol=72.1×10-3mol The molar mass of…

Q: What is the mass of 4.91×1021 platinum atoms?

A: Given:Number of platinum atoms = 4.91×1021.Molar mass of platinum = 195.084 g/mol.

Q: An element´s relative mass, expressed in atomic mass units on the periodic table, is equal to its…

A: The mass of an atom can be expressed in different forms like molar mass,  relative mass, atomic mass…

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.