what is used to determine an atom's weight and atomic number?

Q: What is distinctive about isotopes of elements, and why are they important?

A: The atomic number of an element is expressed as the number of protons and it is equal to the number…

Q: Determine the atomic mass (in g/mol) of an isotope using the following info: mass of an isotope…

A: Answer: First of all we will find out the number of moles in 2.97×1022 atoms. After that, by using…

Q: Fill in the missing information: Symbol Atomic # Mass Number # Protons # Electrons # Neutrons Charge…

A: Since, For the given notation of the element, Number of proton = Atomic number Number of neutron =…

Q: what is a diatomic element and how do you determine its mass and atomic number?

A: In this question, we have to explain what is a diatomic element and how do you determine its mass…

Q: Explain the difference between Z (the atomic number) and A (the mass number)?

A: Concept introduction: Atomic number and mass number are the basic properties of element. An atom…

Q: How many isotopes of chlorine exist in nature?

A: The element chlorine has two isotopes, chlorine–35 and chlorine–37.

Q: A mass of 41.6 g of an element is known to contain 6.59 x 1023 atoms. What is the atomic mass of the…

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Q: Calculate the atomic mass of element "X", if it has 2 naturally occurring isotopes with the…

A: Given : element X has 2 isotopes with mass and abundance as X-45 :  mass = 44.8776 amu and abundance…

Q: Mass Name Nuclear Symbol # Protons # Neutrons # Electrons Number selenide magnesium-26

A: The nucleus of  an atom consist of protons and neutrons where as electrons lie out site the nucleus.

Q: 60% of the isotopes of bromine have an atomic mass of 79 amu while 40% of the isotopes of bromine…

A: Given Percentage abundance of bromine isotope

Q: 17. Place the labels chemical symbols, atomic number, and mass number in the shorthand notation…

A: The atomic number of an atom is the number of protons present in the atom. For a neutral atom, the…

Q: Which particles account for most of an atom’s mass?

A: Atoms are the fundamental unit of matter consisting of neutrons, protons and electrons.

Q: Compare the relative charge and mass of each of the subatomic particles.

A: We have to compare the relative charge and mass of each of the subatomic particles. Solution:  There…

Q: What particles are found in the nucleus of an atom? What is the charge of the nucleus?

A: Sub-atomic particles are the particles that are present inside the atom. Three sub-atomic particles…

Q: # of # of # of Atomic Mass Protons Neutrons Electrons Number Number 32 73 14 14 28 48 64 115 77 59

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Q: Determine the number of protons and the number of neutrons in isotope. 2311Na

A: The number of protons and the number of neutrons in isotope 2311Na can be identified as, Atomic…

Q: How many neutrons are in the nucleus of an atom that has an atomic mass of 36 and an atomic number…

A: We are given a atom, lets say X having atomic number 25 and Atomic mass = 36.

Q: 26) An element has two isotopes. One has an atomic mass of 68.93 amu and a natural abundance of…

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Q: How are isotopes depicted in an atomic symbol?

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Q: Provide the correct atomic symbol meeting the following conditions. 1. number of proton = 12 2.…

A: Provide the correct Atomic symbol ---

Q: How are protons and neutrons similar? How are they different?

A: Similarities: Protons and neutrons have almost the same mass and are both located in the nucleus of…

Q: Enter your answer in the provided box. The atomic masses of the two stable isotopes of copper, Cu…

A: Calculation of average atomic mass of cu: Average atomic mass = percentage abundance x mass of cu…

Q: What is the mass number of an element that contains 25 protons, 22 electrons, and 20 neutrons?

A: The given data contains, Number of protons = 25. Number of electrons = 22. Number of neutrons = 20.

Q: Distinguish isotopes and calculate atomic weight

A: An atom consists of three sub-atomic particles known as electrons, protons and neutrons. The number…

Q: What is the mass number of potassium-39? What is the isotope’s charge?

A: Given atom,      Potassium-39   For a neutral atom, atomic number = Number of protons = Number of…

Q: Define the terms Neutrons, Protons, and Nucleus?

A: The atom has three fundamental particles known as neutron, proton, and electrons.

Q: An element has two naturally occurring isotopes. One has an abundance of 51.839% and an isotopic…

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Q: How do you identify elements based on mass number and atomic number

A: The objective of the question is to understand how to identify elements based on their mass number…

Q: What is the mass number of an atom which is made up of 38 protons, 52 neutrons and 38 electrons.

A: Mass number = Number of protons + Number of neutrons

Q: Element X is found in two forms 90.0% is an isotope that has a mass of 20.0, and 10.0% is an isotope…

A: Average atomic mass unit = ( abundance of 1st isotopes* atomic mass + abundance of 2nd isotope *…

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.