Which describes an atom of plutonium?A. It can be divided into smaller particles that retainall the properties of plutonium.B. It cannot be divided into smaller particles thatretain all the properties of plutonium.C. It does not possess all the properties of a largerquantity of plutonium.D. It has an atomic number of 244.

Q: The element stramonium (Sa, average atomic mass 628.23 u) reacts with the element kingsine (Ks,…

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Q: The nucleus, the massive center of an atom, contains which two particles?

A: Nucleus is the massive part of any atoms . It contains mostly all the mass any element. Nucleus was…

Q: What is isobars and isotopes?

A: Isobars: 1. Isobars are elements with different atomic numbers and the same mass number. 2. Isobars…

Q: Accordingly, which of the following statements is wrong?    A) The mass of an aluminum atom is…

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Q: A sample of an element has three isotopes: X with a mass of 18.321 amu and percent abundance of…

A: The average atomic mass of an element that has three isotopes is the fractional abundance of X times…

Q: Approximately how many times greater is the diameterof an atom than the diameter of its nucleus?…

A: Atoms are bigger in size and in the center of the atom nucleus is present.

Q: Atomic mass of aluminum is 27. Accordingly, which of the following statements is wrong? O A) The…

A: Molar mass of Al is 27 g  1 gram atom of Al is 27 g  Mass of Al is 27/12 times of the C  Atomic mass…

Q: Atomic Information Sample Number of Protons Number of Neutrons 44 36 46 2. 36 36 48 4. 36 50 Which…

A: An element is identified by its atomic number. Atomic number is the number of proton present in that…

Q: If mass # is 141 and the # of protons 58, what is the atomic symbol and the # of neutrons?

A: Given:The mass number  of atom = 141 The no of proton = 58

Q: n your own words, define or explain these termsor symbols: (a) ; (b) particle; (c) isotope; (d) ;(e)…

A: Chemistry is the study of elements and compounds comprised of atoms, molecules or ions. It involves…

Q: (i) What is the mass of a neutron? (ii) What is the charge of a neutron?

A: Neutron is a subatomic particle as like proton. It is found in the nucleus along with proton and it…

Q: I am working on question 25 of chapter 2 in the chemistry openstax second edition.  The question is…

A: The equation is correct. In the equation x is the fraction of isotope with atomic mass 10.0129 amu…

Q: How many elements are presently known? About how many occur naturally?

A: Periodic table contains 119 elements but the last elements 119 know as Ununennium or eka-francium is…

Q: The element stramonium (Sa, average atomic mass 628.23 u) reacts with the element kingsine (Ks,…

A: Mass of one molecule of SaKs7 = ( average atomic mass of Sa )+ ( 7 X average atomic mass of Ks )…

Q: Which two atoms are isotopes of one another? Atom #p* # n° #e A 10 8 B 10 9 10 9. D 11 A) A-B B) B-C…

A: Given, Atom no. of protons no. of neutrons no. of electrons A 8 10 8 B 10 9 10 C 9 9 9 D…

Q: Indium has two naturally occurring isotopes: 113In, with an atomic weight of 112.904 amu; and 115In,…

A: Given: Atomic weight of 113In isotope = 112.904 amu Atomic weight of 115In isotope = 114.904 amu…

Q: One atom of an unknown element has a mass of6.66 × 1 0 -23 g. What is the identity of this element?

A: Molar mass is the mass of Avogadro's number (6.022×1023) atoms.

Q: Consider chlorine, which occurs as a mixture of two isotopes: chlorine-35, with a natural abundance…

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Q: What is the mass of 1.6x10^21 argon atoms?

A: Molar mass of Argon is 39.95 g/mol i.e 1 mole of argon = 39.95 g of Argon Number of atoms of Argon…

Q: 2.5 million atoms of particular element have a mass of 8.33X10^-16 grams. What is this element?

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Q: Mass Isotope from the list, and answer the following questions for each term: What familiarity and…

A: The two given terms are  Mass Isotope Dear student since it is a multiple subparts questions,…

Q: Explain why atomic masses are not whole numbers.

A: The atomic masses are an important quantity of each element. Each element of the periodic table will…

Q: mass of magnesium ribbon before experiment is 0.33g mass afer is 0.49g    Determine the mass of…

A: 0.1945 g of O2 combines with Mg to form 0.49 g of MgO.

Q: A sample of 5.000 g of nitrogen can be combined with 5.714 g of oxygen to form nitric oxide gas…

A: The amount of products formed for the given quantity of reactants is determined using stoichiometry.…

Q: A 1.0-g sample of carbon dioxide (CO2) is fully decomposedinto its elements, yielding 0.273 g of…

A: Given information: Mass of carbon = 0.273 g Mass of oxygen = 0.727 g Mass of carbon of different…

Q: The mass of a single niobium atom is 1.54×10-22grams. How many niobium atoms would there be in a…

A: Density is a physical quantity that can be determined with the help of the mass and volume of the…

Q: Silversmiths are warned to limit their exposure to silver in the air to 1×10*8 g Ag/L of air in a 40…

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Q: In a neutral atom the number of protons equals

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Q: An unused flashbulb contains magnesium and oxygen. After use, the contents are changed to magnesium…

A: The observation can be explained by the the law of conservation of mass. The law of conservation of…

Q: Write the complete cher states of matter.

A: Write the complete reaction between Ca(OH)2 & HCl?

Q: 2T) A comprnd Cim 15 5.१५°% Olygen is 5.9496 mass of this com A) what Is the B) what IS the

A: Percentage of hydrogen = 5.94 %  Percentage of oxygen = 94.06 % Molar mass of compound = 87.55 g/mol

Q: 3) In a far away land and long ago, a series of experiments were carried out. Three samples of…

A: In 2) Use law of constang proportion Divide the both Kalium and pyron masses We see that A same and…

Q: ny atoms a

A: The number of moles is determined as the mass of the substance upon its molar mass. The number of…

Q: Whith of the following is not one of Dalton's laws? a) Atoms are indestructible. b) Atoms of the…

A: Dalton's atomic theory are as follows  (1) Atoms are indivisible,tiny particle of same size and same…

Q: Write a symbol of an unknown or hypothetical element, then put on the proper place its atomic number…

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Q: An element has two naturally occurring isotopes the first isotope has an abundance of 30.37% and a…

A: With data's given Initially we are finding percentage abundance of another(second) isotope and then…

Q: A student says,A carbon atom is not the smallest possible amount of carbon, because atoms are built…

A: An atom contains electrons, protons and neutrons. Therefore, a carbon atom is composed of its…

Q: Hydrogen sulfide is composed of two elements: hydrogen and sulfur. In an experiment, 6.500 g of…

A: a)The mass of sulfur obtained is calculated as shown below,

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: There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 10.93%. Now…

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Q: A sample of 4.000 g of nitrogen can be combined with 4.571 g of oxygen to form nitric oxide gas…

A: In nitric oxide, the ratio of N and O is = N : O = 1 : 1.                                      (mole…

Q: There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 14.63%. Now…

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Q: A piece of copper contains 6.7×108 atoms. What is the mass of the sample, in units of kilograms

A: molar mass of Cu = 63.55 g/molThis is mass of 6.022×1023 atomsuse:mass of 1 atom = molar…

Q: Question attached

A: The given data contains, mass of carbon C = 0.273 g mass of oxygen O =0.727 g

Q: The following quantities are placed in a container: 1.5 × 1024 atoms of hydrogen, 1.0 mol of sulfur,…

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Q: he image shows a representative sample of 5050 atoms of a fictious element, called lemonium (LeLe).…

A: Given: The atomic mass of Le-19 = 19.0134 u The atomic mass of Le-17 = 17.4629 u The atomic mass of…

Q: A copper wire weighs 1.312 g is 2.15 mm in diameter and 40.5 mm long. The atomic mass of copper is…

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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.