How idea of atoms along with the idea of elements evolved?

Q: An element has the following natural abundances and isotopic masses: 2297% abundance with 27.977…

A: Average atomic mass of an element is the sum of the masses of its isotopes each multiplied by its…

Q: Name Element "Teams' Similar to teams of ballplayers, elements have symbols (abbreviations or logos)…

A: Dear Student since you have posted multiple parts question..... we will solve the first question…

Q: Which of the following statements is true? O Water is an example of an element. O Protons and…

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Q: the symbol of the halogen with the most electrons Express your answer as a chemical symbol. ΑΣφ ?

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Q: 5. In a chemical formula, which element is listed first?

A: In a chemical formula, which element has to be listed first has to be given.

Q: (T/F) The atomic number of an elements tells us the number of protons and neutrons in an element.…

A: Hii there, since there are multiple sub parts posted. We are answering first three sub parts. If…

Q: 6. Students in a chemistry course were asked the following question on unit exam: "Draw a diagram…

A: 1. If we consider 1 circle as 1 atom then both A and B diagrams are correct, where Diagram A…

Q: 12. For each of the following elements, use the tables on the inside cover of the book to give the…

A: An atom is made up of a nucleus and electrons. Nucleus consists protons and neutrons. Protons are…

Q: An unknown element is determined to have two naturally occurring isotopes. Isotope 1 has a mass of…

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Q: Tony stark is trying to make new element, and smashes together an atom of carbon-12 and an atom of…

A: carbon= C612Atomic number = 6Number of protons = 6Number of electrons = 6Mass number  = 12Number of…

Q: An element has the following natural abundances and isotopic masses: 90.92% abundance with 19.99…

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Q: 57. Which elements are alkaline earth metals?(a) sodium(b) aluminum(c) calcium(d) barium(e) lithium

A: The elements in the tabular form when arranged on the property of the increasing atomic number order…

Q: How many electrons make up a charge of 56nC? If these are made of copper atoms, how many atoms would…

A: The charge is always quantized. The number of electrons can be determined as follows: Number of…

Q: State the laws of definite proportions and multipleproportions. Illustrate each with an example.

A: Law of definite proportions, statement that every chemical compound contains fixed and constant…

Q: 1.Which of the following elements is not an alkali metal? a. Li b. Na c. K d. P

A: Note : As per our guidelines , we are supposed to answer first question please resubmit the other…

Q: Search the web or your textbooks for an illustration of Mendeleev’s periodic table. How many…

A: Given : Mendeleev periodic table  To find : Describe it properly and compare it with modern periodic…

Q: 2 of 2 Explain why the atomic mass of an atom is a decimal number and how that value was determined…

A: In periodic table generally atomic masses are in decimal form because we know that almost for every…

Q: How the idea of atoms along with the idea of elements evolved? (e.g. timeline, graphic organizer,…

A: An atom is the smallest particle of matter that uniquely defines a chemical element. An atom…

Q: An ion found in some compounds used as antiperspirants contains 13 protons and 10 electrons. What is…

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Q: An alloy is 12.8% copper by mass in tin. Copper makes up what percentage of the atoms in this sample

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Q: Tony stark is trying to make new element, and smashes together an atom of helium-4 and an atom of…

A: When an atom is smashed into another atom, the reaction is termed a nuclear fusion reaction. Such…

Q: Name Element "Teams' Similar to teams of ballplayers, elements have symbols (abbreviations or logos)…

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Q: Two samples of carbon tetrachloride are decomposed into their constituent elements. One sample…

A: The ratio of weights in the first sample is 448/ 38.9 = 11.5: 1. The no of moles of carbon and…

Q: 2.1. In the following drawing, the green spheres represent atoms of a certain element. The purple…

A: Hey there thankyou for the question.    By law of constant proportion all samples of a pure compound…

Q: Differentiate between an atom, an element, and a molecule.

A: Element - are naturally occurring species  Atom-building block of molecule  Molecule - made up of…

Q: Me et the Elem ents Name: In each boxx please find and then write the correct element by name, its…

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Q: Explain the following statement: The smallest particles unique to an element may be atoms or…

A: An atom is formed of three main sub-particles namely, electrons, protons, and neutrons. Protons and…

Q: Imagine that you have discovered several stable isotopes of a new element, which you call element X.…

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Q: In Star Trek, a (fake) element that often plays a role in the plot is dilithium (Dt), which has…

A: Since the % abundance is not given exactly, it is a variable, thus answer will be given in terms of…

Q: 1. Describe the periodic table, 2. 3. Where are the alkali metals and the halogens located on the…

A: #1: A periodic table is a tabular arrangement of elements in form of rows and columns in increasing…

Q: Which of the following was not postulated by Dalton? Group of answer choices A, Atoms of one element…

A: The Dalton atomic theory was the first attempt to describe the structure of an atom. According to…

Q: Similar to teams of ballplayers, elements have symbols (abbreviations or logos) and are arranged in…

A: Element name Element symbol Group number Period number  Chlorine Cl 7 3 Calcium Ca 2 4 Radium…

Q: Enter your answer in the provided box. 35 The atomic masses of the two stable isotopes of chlorine,…

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Q: Which one of the following statements regarding subatomic particles is true? a. Electrons have a…

A: An atom consists of three sub-atomic particles namely, electrons, protons, and neutrons. Electrons…

Q: Devise a system of chemical symbols that is easy to use by answering the questions below. Look up…

A: For writing chemical symbols one or two letters are used and first one is written in capital letter…

Q: A hypothetical element has only 3 isotopes, with the following masses: Isotope 1:  44.98 u Isotope…

A: Isotopes are the elements which have same atomic number but exhibits different mass number. To…

Q: Element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes…

A: The average atomic mass of the element can be calculated as follows :

Q: Write the atomic symbol, including the atomic number and the mass number for each of the following…

A: As we know atomic number is equal to number of proton. And mass number is the sum of the numbers of…

Q: An element has the following natural abundances and isotopic masses: 78.99% abundance with 23.985…

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Q: Among the 118 known elements, there are approximately equal numbers of metals and nonmetals. True or…

A: An element ia a pure substance made up of the same kind of atoms .At present 118 elements are…

Q: Which statements are consistent with Dalton’s atomic theoryas it was originally stated? Explain your…

A: Dalton was a chemist who gave a theory to explain the nature of atoms as Dalton's atomic theory.…

Q: WHAT I CAN DO You tour around your house and list the different elements you can find. Then write…

A: Answer - According to the question - Given - A number of elements exist in a pure form in nature…

Q: Which of the following statements is not true about the element potassium? Group of answer choices…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: symbol element capital atom lowercase two solid a) All mater is made up of tiny particles called an…

A: Given : We have to fill the blanks asked in the question.

Q: In the periodic table, do the chemical properties change more than through a period or through a…

A: Periodic table is table in which the elements are arranged based on there electronic configurations.…

Q: How many protons, electrons and neutrons does Cl1?

A: In the question, we have been given a halide ion and we need to calculate the number of electrons,…

Q: 14. One compound of elements X and Y contains 35.2% X (by mass); another compound contains 24.6% X.…

A: The chemical formula of compound is represented by the atoms of the elements as their chemical…

Q: Which element is represented by the following symbol A. Chromium B. germanium C. barium D. iron

A: The given symbol of element is                       5624X  Here,  Mass number of element = 56…

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