Q2 :- answer the following questions There are two 612C Different atom of carbon 613C And Ra-What is the term used to call these atoms Rb-How are these atoms a like P-How are these atoms a differ

Q: m atom c

A: Atom is the small particle of matter and made up of three fundamental particles which are known as…

Q: A fictitious element is composed of isotopes A and B with masses of 61.9887and 64.9846 amu,…

A: A conclusion has to be made on natural abundance of the two isotopes.

Q: The fundamental particle of matter is the A) proton B) electron C) neutron D) atom E) None of the…

A:

Q: Copper has only two naturally occurring isotopes, Cu-63and Cu-65. The mass of Cu-63 is 62.9396 amu,…

A: The relative abundance of each isotope of an element can be determined using the following formula:…

Q: Q2. Which statement best summarizes the nuclear model of the atom that emerged from Rutherford’s…

A: In order to find out the arrangement of e- and protons in atoms, Rutherford conducted a series of…

Q: The figure attached here is a representationof 50 atoms of a fictitiouselement with the symbol Ntand…

A: There are various forms of the element which differ in molecular mass and same atomic number, these…

Q: A natural sample of chromium, taken from the ground,will contain four isotopes: Cr-50, Cr-52, Cr-53,…

A: Chromium has four stable isotopes which are Cr-50, Cr-52, Cr-53, and Cr-54. Isotopes are the atoms…

Q: Describe the early Greeks' idea of the atom?

A:

Q: Some imaginary element Im has two naturally occurring isotopes, Im-54 (53.826 amu) and Im-58 (58.055…

A: Let, the % of Im-54 isotope = x The % of Im-58 isotope = 100 - x Atomic mass of Im-54 isotope =…

Q: in carbon dioxide, teh ration of carbon atoms to oxygen atom s is 1 to 2. If there aer 12*10^23…

A: Given  number of atoms of Oxygen = 12 x 1023 atomsratio of C atoms  : O atoms is 1: 2  By using…

Q: Q1:Silicon has three naturally-occurring isotopes: 92.23% of 28Si, with an atomic weight of 27.9769…

A: Given data,Atomic weight of 28Si=27.9769amuPercent isotope of 28Si=92.23%Atomic weight of…

Q: Enter your answer in the provided box. 12 The atomic masses of the two stable isotopes of carbon, 13…

A: Given,  12C6 isotope has 98.90 %  molar mass = 12 amu And 13C6 isotope has 1.100 %  Molar mass =…

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

A:

Q: Dalton theorized that matter is made of tiny invisible particles called atoms. in what way did the…

A: The most significant of all the Dalton’s investigations were related with the atomic theory.…

Q: the number of protons in an atom is equal to the atomic number true or false?

A: Given statement :- The number of protons in an atom is equal to the atomic number  To determine :-…

Q: 13. Which of the following are isotopes? a. P3- and Ar b. 1251 and 127| c. O and O2- d. Na* and K*…

A: b) 125I and 127I

Q: A certain isotope has a charge of +3 and has 33 protons and 42 neutrons in the nucleus. How many…

A: Consider the given information is as follows; Number of protons = 33 Number of neutrons = 42…

Q: Neutral Cl atom has 17 proton and 18 neutron. According to this information, Which one of the…

A: For an atom to be electrically neutral, the number of protons should be equal to the number of…

Q: In what way are isotopes of a given element always different? In what way(s) are they always the…

A:

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 average atomic mass of copper is 63.546 amu. Copper consists of two naturally occurring…

A: Question 2 Atomic mass of copper can be calculated using the following formula. Natural abundance…

Q: A hypothetical element, X, has two isotopes: 47X with an isotopic mass of 47.621 amu and 51X with an…

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

Q: 2. How would you describe the nucleus of an atom? A. dense, positively charged B. large, positively…

A: To describe : Nucleus of an atom.

Q: Rubidium has two naturally occurring isotopes. The elemental mass of Rb is 85.4678 u. If 72.165% of…

A: Given: Rubidium has two naturally occurring isotopes. The elemental mass of Rb = 85.4678 u The…

Q: The nucleus of an atom accounts for most of the size and mass of the atom. O very little of the size…

A: According to Dalton's atomic theory, compound is formed by combining elements and it's also based on…

Q: complete atomic symbol for each of the following isotopes:

A: (a).

Q: The element nitrogen has two naturally occurring isotopes. One of these has a mass of 14.0 amu and a…

A: Given data contains, Atomic mass of isotope-1=14.0 amu Percent abundance of isotope-1=99.63% Atomic…

Q: Which idea came out of Rutherford’s gold foil experiment?a) Atoms contain protons and neutrons.b)…

A: Rutherford’s gold foil experiment is also called as Planetary model of the atom in which he told…

Q: Which scientist developed a model that is still used today to show the number of electrons in each…

A: Bohr model explains an atom as a small and positively charged nucleus surrounded by electrons. These…

Q: Who performed this experiment? Robert Millikan O Niels Bohr O J. J. Thomson Ernest Rutherford What…

A: Step : 1              the answers for the following multiple choice questions are as follow :

Q: Given these two atoms, are they isotopes of the same element? Select one: a. No, since they don't…

A: The atoms with the same number of protons but the different number of neutrons or mass numbers are…

Q: Which of John Dalton’s theories given below were found to be INCORRECT? 1. the atoms of elements…

A: Dalton's atomic theory was the first theory to describe all matter in terms of atoms and their…

Q: There are two isotopes of Beryllium: Be-9 and Be-11. A chemist examines a sample of 250 Beryllium…

A: If A1 , X1 and A2 , X2 are atomic mass and percentage abundance of two isotopes of an element then…

Q: Which pair correctly matches an element to its atomic number? O a) 9.012 - Be O b) 12.01 - C c)…

A: The atomic number of an element is equal to the total number of protons in the nucleus of the…

Q: er scientists knew that atoms contained charged subatomic pa the masses of the particles are…

A: using the mass data expressed in grams in the table calculate how many times more massive a proton…

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: All parts of Dalton's theory on atoms is still accepted today. O True O False

A: Postulates of Dalton’s atomic theory is shown below: All matter is made up of individual particles…

Q: Describe the Rutherford gold foil experiment in 50 words (or formulas or chemical equations) or…

A: Rutherford gold foil experiment has been explained below.

Q: The atomic mass of lithium is 6.9 41AMU. Lithium has two natural occurring isotopes Li-6 in…

A:

Q: A chemist finds 30.82g of nitrogen will react with 17.60, 35.20 , 70.40, or 88.00g of oxygen to form…

A: The mass of oxygen per gram of nitrogen in each compound is calculated as,

Q: There are only two naturally-occuring stable isotopes of chlorine. The mass and natural abundance of…

A: There are only two isotopes of chlorine is present. Chlorine- 35 and chlorine -37  Mass of…

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

A:

Q: An atom has a diameter of 1.50 À and the nucleus of that atom has a diameter of 2.50 x 10-5 A.…

A: Since you have posted multiple unrelated questions, we are entitled to answer the first only.

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.