atoms of gold (Au) In a 3.7-gram sample, there are (A) 1.1 x 1022 atoms of gold (B) 3.2 x 1025 atoms of gold (C) 4.4 x 1025 atoms of gold (D) 3.1 x 10-26 atoms of gold

Q: Bromine has two naturally occurring, non-radioactive isotopes.  If you were looking at a mass…

A: Introduction- An isotope is the one that is having same atomic number but a different mass number.…

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Q: Naturally occurring chlorine (Cl) consists of two isotopes. One of the isotopes has a mass of 34.969…

A: Isotopes have same atomic number but different atomic mass or mass number. Atomic number is equal to…

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A: The abundance of all the isotopes for a given element must add up to 100%. The fractional abundance…

Q: 2.2 Rhenium (Re) occurs naturally in two distinct isotopes, 185 Re and 187 Re, with an average…

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Q: 1s22s22p63s23p4 is what element?

A:

Q: 1. The charge required to deposit 40.5 g of Al (atomic mass = 27.0 g) from the fused Al,(SO), is:…

A: here the question is from faraday law :- According to the Faraday law , the masses of different ion…

Q: actual mass of a 37Cl atom is 36.966 amu. Calculate the mass defect (amu/atom) for a 37Cl atom.

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Q: 6) the nucleus is a very small region that contains 99.99% off the atoms mass? true or false

A:

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: One atom of Se-77 is 6.410 times as heavy as an atom of C-12. What is the atomic mass of Se-77?

A:

Q: How many atoms of lead are required to cover a 37.0 cm by 55.0 cm area with a sheet of lead that is…

A: The required volume to cover =  37.0 cm×55.0 cm×0.142 cm…

Q: 7. 12.01 g of carbon has approximately 602,214,129,000,000,000,000,000 atoms. What is the…

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Q: An imaginary element Z has two naturally occurring isotopes, ³Z and 4Z. ³Z has a mass of 3.016 amu,…

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Q: 6. What is electrical charge?

A: The definition of electric charge has to be given,

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Q: Which element would be expected to have chemical and physical properties closets to those nitrogen(N…

A: sulfur, because it's in the same groupGroups are columns of a periodic table. Both oxygen and sulfur…

Q: Why is the atomic weight of chlorine 35.4527 in stead of exactly 35

A: Answer:  Since chlorine exhibits two isotopes Cl35  and  Cl37 in 3:1 ratio Hence we will take…

Q: An unknown element X has the following isotopes: ²⁵X (80.5% abundant) and ²⁷X (19.5% abundant). What…

A: Given :  element X has the isotopes: ²⁵X (80.5% abundant) and ²⁷X (19.5% abundant).  Since Atomic…

Q: 12. Rubidium is a soft, silvery-white metal that has two common isotopes, Rb and "Rb. If the…

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A: Given : Number of aluminium atoms in the foil = 7.5 X 1023

Q: Titanium has five common isotopes: 46Ti (8.000%, 45.95 amu), 47 T (7.800%, 46.95 amu), 48Ti (73.40%,…

A: Given 46Ti (8.000%, 45.95 amu), 47 Ti (7.800%, 46.95 amu), 48Ti (73.40%, 47.95 amu), 49Ti (5.500%,…

Q: The atomic mass of rhenium is 186.2 atomic mass units given that 37.1% of natural rhenium is rhenium…

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Q: TRUE or FALSE: Isotopes are elements that have a different number of protons.

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Q: How many grams of potassium permanganate contain 5.48 x 1020 atoms of oxygen?

A: Given: Number of atoms of oxygen in KMnO4 sample = 5.48 × 1020 atoms.

Q: Determine the missing element -3516S----à -10e + ?

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Q: If a sample of an element has a mass of 80.2grams and contains 1. 78moles, what is the elements?

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Q: If a sample of gallium contains 1.56×104 atoms of gallium-69 and 1.02×104 atoms of gallium-71, what…

A: Given,1.56×104 atoms of gallium 69.1.02×104 atoms of gallium 71.

Q: Chemical for 3. How many times larger is the volume of the atom than the volume of the CaCl₂…

A: An atom consists of positively charged nucleus at its centre where the size of the nucleus is very…

Q: A solid circular cone made of pure platinum (d = 21.45 g/cm3 ) has a diameter  of 2.75 cm and height…

A: Density of a substance is given by the ratio of mass to its volume. Density = MassVolume Volume of a…

Q: ? + 4Ni→7Rg+¿n Express your answer as an isotope or a particle. 28

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Q: Suppose a piece of silver jewelry contains 6.23x1022 atoms of silver (Ag). Part A How many dozens of…

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Q: 5. A physics teacher rubs a glass rod and a cotton cloth together. Identify the following statements…

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Q: If one charge is + 0.44 nC, what is the other charge?

A: One charge = + 0.44 nC  Other charge = ?

Q: . In the following figures, the open circles represent atoms of an element and the filled circles…

A: Dalton’s Atomic Theory: Dalton's Atomic Theory is based on law of conservation of mass and the law…

Q: 5. What would 756 atoms of Iodine weigh in amu? -

A: The question is based on mole concept. We have to calculate mass of the given number of atoms of…

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Q: The atomic mass of rhenium is 186.2. Given that 37.1% of natural rhenium is rhenium-185, what is the…

A: Average atomic mass = ∑i=1n (mass of ith isotope)(% abundance of ith isotope)100 Where "n"…

Q: Why are isotopes important?

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Q: Give a Characteristics of an Atomic?

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

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A: Atoms are made up of smaller particles like electrons, protons and neutrons. Similarly, a carbon…

Q: What is the mass (in grams) of one Ni-58

A: Given is number of atom = 1 Mole represent the quantity of fundamental particle.

Q: What is the mass of the other isotope of Boron given 11B has a mass of 11.0093 amu and an abundance…

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Q: Below are the five atomic models in history. Number them in historical order from 1 to 5. (1 being…

A: The 5 atomic models in history are given. They are to be numbered in historical order from 1 to 5.…

Q: A sample of aluminum foil contains 5.70 x 1023 atoms. What is the mass of the foil?

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Q: An unknown element X has the following isotope: 25X (80.5% abundant) and 27X (19.5% abundant). What…

A: Given : Isotope 1 : X25            Atomic Mass = 25           % Abundance = 80.5 %…

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.