A chemical formula is shown. The subscripts in a chemical formula represent the CHOH Subscripts number of atoms of the element in front of the subscript. atomic mass of the heaviest element in the compound. atomic number of the element that follows the subscript. column on the Periodic Table of the element next to it.

Q: determine the  abundance in nature of each isotope in percent.

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Q: is formed when elements combine. The COIna chemical reaction a new Different elements combine to…

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Q: Naturally occurring chlorine is 75.78% 35Cl (atomic mass 34.969 u) and 24.22% 37Cl (atomic mass…

A: Given :  Atomic mass of lighter isotope i.e 35Cl (A1) = 34.969 u  Percentage abundance of lighter…

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

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Q: The patient developed symptoms, such as nausea and vomiting, diarrhea, abnormal heart rhythm, muscle…

A: 23) Given: The number of protons detected = 33

Q: (b) H2S to SO,² (acidic) Atoms: Oxygen: Hydrogen: Electrons:

A: The given half reaction is  H2S→SO42- in acidic medium.

Q: A certain ion X-1 contains 18 electrons and 17 neutrons. Identify the element X. What is the mass…

A: Given information: Number of electrons and neutrons in  X-1 = 18 electrons and 17 neutrons

Q: Give one example (atomic symbol and name) for each of the following. a. a main-group…

A: Hi, since you have posted multiple questions. As per our guidelines, we will answer the very first…

Q: An element's most stable ion forms an ionic compound with bromine, having the formula. If the ion of…

A: Let the formula of the ionic compound be MBr2. Where M is the ion of the element. Bromine belongs to…

Q: What provides the atomic mass? O number of the individual particles in the individual atom of an…

A: Basic definition and formula of atomic can determine the protons and neutrons because of..... A= Z+…

Q: What is the formula of the compound in which the atom combining ratios are: boron: hydrogen :…

A: Given : The ratio of elements in the compound = Boron : Hydrogen : Chlorine = 4 : 9 : 1

Q: 1. What does the average atomic mass of an element represent? What unit is used for average atomic…

A: We will answer the first question since the exact one wasnt specified.Please resubmit a new question…

Q: 4/Determine the Mass Percentage of each element in the compound Put the first element in the first…

A: The first step of this problem is to calculate the molecular weight of the given compound, followed…

Q: The following diagram is a representation of 20 atoms ofa fictitious element, which we will call…

A: a.

Q: M is a Group I metal. 0.5 mol of the metal sulphate weighs 71.05 g. What is the relative atomic mass…

A: The weight in gram of the number of atoms of an element present in 12.00 g of carbon-12 is relative…

Q: An experimental determination of the percent abundances of the three isotopes of magnesium is given…

A: Given data:

Q: Calculate the average atomic mass for the hypothetical element X if X has 2 naturally occurring…

A: When an element is present in more than one isotopic form. Then we need to calculate average atomic…

Q: What additional information is needed in order to calculate a more accurate atomic weight for the…

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Q: Lead (II) Nitrate Element #1 Element #2 Element #3

A: Chemical formula of lead nitrate is Pb(NO3)2 Atomic mass of Pb = 207g/mol Atomic mass of nitrogen =…

Q: When trying to identify an unknown element, a scientist determines what other elements the unknown…

A: To identify the unknown elements, its chemical properties should be studied.  Chemical properties…

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: Ammonia is a gas with a characteristic pungent odor. It is sold as a water solution for use in…

A: Given information,

Q: An unknown metal X, mass 1,20g , reacts during heating with oxygen and forms an oxide XO of mass 2g.…

A: The balanced chemical equation for the given reaction is,                                      2 X…

Q: 3/Determine the Mass Percentage of each element in the compound Put the first element in the first…

A: The molecular formula of Copper sulphate is CuSO4 The atomic mass of Cu = 63.5g/mol The atomic mass…

Q: The atomic weight of Aluminum elemen

A: 1mol = 6.022 x1023 electrons  Given that  Atomic mass of Al = 26.981 g/mol  Atomic number of Al =…

Q: How many electrons is the element Strontium (Sr) likely to gain or lose?

A: Strontium is represented by Sr. The atomic number of Sr is 38. Sr Electronic configuration = [Kr]…

Q: 8/Determine the Mass Percentage of each element in the compound Put the first element in the first…

A: Given compound is Ammonia, NH3  Elements present in ammonia are  Nitrogen (N) and Hydrogen (H)…

Q: Calculate the average atomic mass of the element iron (Fe) using the following data: Isotope Iron-54…

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Q: Balance the equation below, which uses imaginary elements (they still follow the usual convention –…

A: We have to balance the equation below, which uses imaginary elements (they still follow the usual…

Q: Determine the Mass Percentage of each element in the compound Put the first element in the first box…

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Q: Determine the Mass Percentage of each element in the compound Put the first element in the first box…

A: Given,        Sodium carbonate   Required,             Mass percentage of each element present in…

Q: The total number of atoms in 2CaCI

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Q: Which of the elements listed below has a lower ionization energy Strontium Silicon

A: Solution Ionization energies square measure continually positive numbers, as a result of energy…

Q: Explain why the symbol for an atom of the element oxygen and the formula for a molecule of oxygen…

A: Elemental symbol - Elemental symbol is the representation of an element/atom which is seen in the…

Q: 1/Determine the Mass Percentage of each element in the compound Put the first element in the first…

A: Standard data: The molar mass of hydrogen =1 g/mol The molar mass of oxygen = 16 g/mol

Q: A sample of an ionic compound containing iron and chlorineis analyzed and found to have a molar mass…

A: Given molar mass = 126.8 g/mol The iron and chlorine containing compound Molar mass of Fe = 55.8…

Q: Calculate the number of atoms in sample. 97.552 g Sn

A: We know that the 1 mole of a substance consists of 6.023*1023 number of atoms. (Mass of one mole of…

Q: An aluminum-containing compound has the formula Mg, Al,0, and is 44.98% oxygen by mass. What is the…

A: Given: mass percent of O = 44.98 % Formula of compound: MgxAlyO4 molar mass of O = 16 g/mol molar…

Q: Determine the Mass Percentage of each element in the compound Put the first element in the first box…

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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: Table 1: Properties of Zinc and Sulphur Element Zinc Sulphur Number of moles, mole 0.365 Mass, g…

A: Given that,  Element Zinc Sulfur Number of moles, mole 0.365   Mass, g   23.3 16.3 Number…

Q: The atomic weight of Aluminum element is 26.981 g/mol and atomic number is 13, the number of…

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

A: The two liquid elements on the periodic table at room temperature are Mercury (Hg) and Bromine (Br).…

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

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Q: Calculate the number of atoms in a 2.70×1032.70×103 g sample of strontium. number of atoms:

A: Gram atomic mass of strontium is 87.62 g.

Q: How many nonmetals are in the 6th period

A: Periodic table represents the systematic arrangement of elements in which the properties of these…

Q: An element has the following natural abundances and isotopic masses: 69.17% abundance with 62.93 amu…

A: Several elements in nature are present in different isotopic forms. So their atomic masses are…

Q: A certain compound is made up of one phosphorus (P) atom, three bromine (Br) atoms, and one oxygen…

A: The given compound contains one phosphorus atom, three chloride atoms and one oxygen atom. The…

Q: Potassium bromide + Iron (III) oxide Potassium oxide + Iron (III) bromide REACTANTS PRODUCTS Element…

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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.