Which of the following is described as a pure substance that consists only of atoms with the same number of protons?   A. Compound   B. Element   C. Isotope

Q: Potassium naturally consists of 93.10% K-39 and 6.9% K-41. Calculate the atomic mass for Potassium.

A: Given that, % abundance of K-39 = 93.10 % = 0.9310  % abundance of K-41= 6.9 % = 0.069  Then,

Q: A certain element contains one atom of mass 10.013 ufor every four atoms of mass 11.009 u. Compute…

A: Given data contains, Mass of first isotope is 10.013 u. Mass of second isotope is 11.009 u.

Q: The element cubidium (Rb) has two isotopes. 85 Rb. has an Otomic maS3 Of 84.911789 87 Rb has an…

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Q: [References] An element consists of 0.19% of an isotope with mass 135.907 u, 0.25% of an isotope…

A: Given : Mass of isotope 1 = 135.907 u  Abundance of isotope 1 = 0.19 % Mass of isotope 2 = 137.9060…

Q: Which statement is not part of Dalton’s atomic theory?(a) Each element is composed of indestructible…

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Q: 17. Sergio's teacher gave him a sample of a substance to identify. His teacher told him it is either…

A: Metal are hard , shiny, magnetic , and a good conductor of electricity .

Q: The relative abundances of silicon isotopes in a sample are  Si-28/Si-29 = 0.08069 and  Si-30/Si-29…

A: Absolute amount of the isotope is the amount of that isotope in the particular amount of sample.…

Q: How did they describe atoms in around 450BC?

A: Democritus was the first person to give the concept of the existence of an 'atom'. He was a Greek…

Q: 9. What 9. What is the difference between a molecular element and an atomic element? List the…

A: Element is a substance which cannot be broken down into simpler unit.It is purest form any…

Q: Describe the general structure of an atom and its isotopes.

A: Atom is the basic unit of matter it consists of a heavy positive mass at its center called the…

Q: Is the statement inconsistent with Dalton’s atomic theory as it was originally stated? Why? Two…

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Q: A certain element exists as three different isotopes, 29.1% of all the isotopes have a mass of 75.23…

A: The average atomic mass can be calculated by using Following formula - AAM = (Mass of 1st isotope×%…

Q: How do I Express my answer isotope for part F

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Q: What do all isotopes of an element have in common? How do they differ? Provide an example to explain…

A: Each element of the periodic table has an atomic number and mass number. The atomic number is…

Q: The isotope with 15 protons and 14 neutrons is? The isotope with 9 protons and 8 neutrons is? The…

A: As we know, Mass number of an atom = number of protons +the number of neutrons Atomic Number of an…

Q: Element X has two naturally occurring isotopes. If 72% of the atoms have a mass of 85 amu and 28% of…

A: An element X has 2 isotopes ,we can find the   relative atomic mass is the average value for the…

Q: An element has four naturally occurring isotopes with the masses and natural abundances given here.…

A: An element has four naturally occurring isotopes with the masses and natural abundances given here.…

Q: Explain how each scientist’s experiment contributed to the characterization of the atom (example:…

A: We have to explain each scientist’s experiment.

Q: Using this information along with the information in the table, calculate the % abundance and the…

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Q: How are isotopes of a particular element alike? How are they different?

A: Isotopes are atoms of the same element that have different numbers of neutrons but the same number…

Q: Part B Complete the sentences to explain your answers. Reset Help particles According to…

A: Given : Some fill in the blanks regarding Rutherford model of atom. To find : Fill in the blanks.…

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: What is the atomic mass unit? a mass of a carbon atom b mass of a hydrogen molecule c (1/18) of…

A: What is the atomic mass unit?

Q: The most abundant isotope of Hydrogen has a mass of 1 amu.  Therefore, the average atomic mass on…

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Q: If a neutral atom of an element has 19 electrons and 14 neutrons, its atomic mass is??

A: Given  Number of electron = 19 Number of neutron = 14  atomic mass = ?

Q: Suppose a new element is found on an extraterrestrial planet, element J. Element J consists of two…

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Q: A(n) ______________________ has a negative charge an a mass about 1,800 times smaller than a proton.…

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Q: Suppose a new element is discovered and it has two stable isotopes. One isotope has a mass of 71.123…

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Q: Consider the following selected postulates of Dalton's atomic theory: (i) Each element is composed…

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Q: A 0.383 g sample of an element contains 1.943 × 10 21  atoms. What is the element symbol

A: Given, amount of sample =0.383 gnumber of atoms of the sample =1.943×1021 atomswe are asked to…

Q: An element exist as 3 isotopes in nature. The isotopic masses (in amu) and percent abundance’s are…

A: The average atomic mass of element is equal to the product of the masses of the isotope and its…

Q: 24.1% of all isotopes of an element have a mass of 75.23 amu. 48.7% have a mass of 74.61 amu and…

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Q: postulate in the atomic theory did the discovery of isotopes contradict

A: The postulates of atomic theory are shown below: Matter is made up of small indivisible particle is…

Q: The natural isotopes of sulfur and their molar masses and mass fractions are respectively 2210S:…

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Q: The existence of isotopes violates one of the original ideas of Dalton’s atomic theory. Which one?

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Q: 24 - Which of the following refutes Dalton's statement: "The smallest building block of an element…

A: Dalton proposed his theory in 1808 in which he said that atom is the basic unit of matter and also…

Q: element from the periodic table between #3-20 Create a drawing that shows the "Bohr Models" of the…

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Q: Silicon has three naturally occurring isotopes: Si-28 has a percent abundance of 92.23% and a mass…

A: The average atomic mass of silicon isotopes can be calculated asIsotope = Si-28amu =27.9769Abundance…

Q: Since there are many more Carbon-12 isotopes found in nature, the mass of Carbon-12 should carry the…

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Q: According to the law of conservation of matter, what happens to the atoms in a chemical reaction?…

A: (a) The atoms are rearranged with no loss in mass

Q: 19) The fact that water is 11.2 % hydroen and 88.8 % oxygen by mass regardless of its origin is an…

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

Q: Give a Characteristics of an Atomic?

A: Solution-   An atom has three subatomic particles The nucleus has a well-charged atomic center and…

Q: How does matter contrast with elements, atoms, and isotopes? Explain step by step how matter…

A: The given question asks to explain three differences, first between matter and elements, second…

Q: Element X has two isotopes. The first isotope has a natural abundance of 80% and has a mass of 60…

A: Given : Abundance of first isotope = 80% Mass of first isotope = 60 amu Abundance of second isotope…

Q: as Question 47 EEU Consider the diisotopic element represented below. element? O forms colored…

A: these given Element is K ( we are saying this on the basis of their atomic masses given in the…

Q: The average mass of nitrogen is 14.0067. The atomic masses of the two stable iotopes of nitrogen are…

A: Given : Atomic mass of nitrogen = 14.0067 amu Atomic mass of 14N = 14.003074002 amu Atomic mass of…

Q: Draw your own concept of an atom. You may refer to the model given by Bohr for an idea of the atom…

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Q: Silicon has three naturally occurring isotopes: 92.23% of Si-28 with an atomic weight of 27.9769…

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Q: subatomic particle with a1+ charge

A: In an atom three fundamental particles are present. Positively charged particle proton and neutral…

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.