how to find how many electrons given the mass of a sample and the known amount of atoms in the neutral element

Q: Calculate the number of atoms in sample. 5.18 g P

A: To calculate the number of atoms of 5.18 g P is given below as; The atomic mass of P is 30.97 g/mol…

Q: The density of helium in a balloon is 1.18 g/L. If a balloon holds 2.89 L of He, how many atoms of…

A: Since mass of He = density X volume  density of He = 1.18 g/L Volume of balloon = 2.89 L => mass…

Q: Oxygen is a _______ and therefore _______ when it forms an ion   A. nonmetal;       loses…

A: Oxygen is a nonmetal element.

Q: Electrons may transfer from  a) atoms of barium to atoms of chlorine b)atoms of sodium to atoms of…

A: We have to predict the option for which  electron transfer is possible.

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

A:

Q: Calculate the number of atoms in sample. 2.26 g Hg

A:

Q: Refer to the periodic table and state the mass for each of the following number of atoms. (a) 1 atom…

A: Refer to the periodic table and state the mass for each of the following numbers of atoms. (a) 1…

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: If a penny is made of 3.11 grams of copper, how many atoms of copper are in the penny? Show your…

A: Molar mass of Copper(Cu) is 63.546 g/mol

Q: Calculate the number of oxygen atoms in a sample that has a mass of 288 amu

A: 1 oxygen atom has mass 16 amu or 16 amu is a mass of one oxygen atom. To calculate number of oxygen…

Q: What is the amount, in moles, of each elemental sample? 11.8 g Ar

A: Given : mass of Ar = 11.8 g

Q: What element makes up 25% of lliving things?

A: The major elements present in the human body are hydrogen, oxygen, carbon, and nitrogen.

Q: Define atomic number, mass number, isotope, atomicmass, and mole.

A: Anything that occupy space and has mass is called matter which  is made up of atoms. Atoms are…

Q: The radius of a tungsten atom is 137 pm. How many tungsten atoms would have to be laid side by side…

A: According to the unit conversion, 1 mm is equal to 1×109 pm. The diameter of tungsten is 274 pm.…

Q: Part C Based on your answer in Part B, how many electrons are in this amount of 13C? Express your…

A: The electron is a subatomic particle with the symbol e or, whose electric charge is one elementary…

Q: How many atoms of Helium can a balloon that has a 25 cm diameter hold? The density of Helium is 1.18…

A: The mole (abbreviated mol) is the SI measure of quantity of a “chemical entity,” such as atoms,…

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: how many electrons are in oxygen

A:

Q: In your own words explain of what are atoms composed?

A: Given: To explain what atoms are composed of.

Q: how many electrons in bromine

A: We know that Bromine is a chemical element with atomic number 35. The symbol used to denote bromine…

Q: what is the mass element of calcium?

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

Q: O3

A:

Q: Aluminum (Al) is element 13 on the periodic table. A sample contains 4.56×1022 atoms of Al.…

A: In this question, we will calculate the amount of Al in grams unit.  You can see below.

Q: oxygen atoms

A:

Q: How many atoms does hydrogen have

A: Calculate no. of  atom in hydrogen=?

Q: How many atoms of He can a balloon that has a 19 cm diameter hold? The density of Helium is 1.18…

A: Given data,Diameter of balloon=19cmRadius of balloon=19cm2=9.5cmDensity of He=1.18g/L

Q: the atomic mass of iron is the weight average of

A: Find the solution below

Q: Which of these atoms Sulfur, Heli Explain.

A: Those atom which completed its octate will not surve as central atom

Q: List eleven elements found on the periodic table which are gasses at room temperature. (Please note…

A: Inert elements, such as He, Ar, and Kr, Xe, and Rn, exists in the gaseous state due to their less…

Q: How many elements are known at present?

A: Element is a pure substance and it cannot be broken down into simpler pure substance by chemical…

Q: A 1.45 g sample of chromium contains ____ atoms.

A: The concentration of any substance can be expressed in different ways such as molality, molarity,…

Q: When an atom has one or more extra ____ it will have a ___ charge

A: An atom has an equal number of electrons and protons. i.e Number of protons= Number of electrons.…

Q: Suppose that a person counts out gold atoms at the rate of one each second for the entire span of an…

A:

Q: explain how to get the atomic symbol

A: Atomic symbol is way of representation of a particular element that makes easy handling of elements…

Q: I want to know at least some reason why the mass of the Mgo formed could be lower that expected

A: Interpretation -  To tell about a reason why the mass of the MgO formed could be lower that expected…

Q: How many V atoms are there in a 97.9 gram sample of V ? atoms

A: Mass of sample = 97.9 grams.  Number of atoms of V sample = ?

Q: In a mass spectrometry experiment, the instrument senses the of particles traveling from the…

A: We have to predict the correct option for particles .

Q: Determine the number of sulfur atoms in 2.7 mol of sulfur.

A: Given,  2.7 mol of sulfur

Q: How do you get from 100g of magnesium to find the number of atoms

A: For a chemical compound or a molecule, the number of moles can be defined as the ratio of the mass…

Q: Discuss the assertion between the observed value of atomic mass of lithium and it's true value

A: The mass of the atom is due to the nucleus. And the nucleus contains two sub atomic particles which…

Q: ne average atomic mass

A:

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

A: Element Ar having three isotopes one is Ar-36, second is Ar-38 and last one is Ar-40  Ar-36 have…

Q: Why are there no atoms of elements that have masses as stated on the periodic table?

A: In modern periodic table elements are arrangement based on their electronic configuration or atomic…

Q: 11) Calculate the number of atoms of each element: 5Na,SO,

A: according to mole concept one mole of any species contains avagadro number of atoms,  molecule and…

Q: Mass of magneisum before experiment is 0.33g   mass after is 0.49 g   Calculate the number of…

A: Number of moles = Mass in gram/Molar mass in gram/mole Given that: Mass of Magnesium = 0.33 g Mass…

Q: Refer to the periodic table and state the number of atoms for each of the following nonmetals. (a)…

A: Given, a) 30.97g of P b) 20.18g of Ne mole=weight of atomAtomic massmole=Number of atomsAvagadro…

Q: Calculate the mass

A: At NTP, temperature T1 = 293.15 K Volume, V1 = 24.04 L Temperature, T2 = 30 ◦C or 303.15 K Volume,…

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.