Sample

Q: In 1808, John Dalton proposed a series of statements regarding the atom that became known as…

A: Given, Five statements of Dalton's atomic theory is given -     Required,                   Among…

Q: Describe and write about the history of the atomic theory. Compare the five theories.

A: Atomic theory: The theory that tells about the structure of the atom is named atomic theory. Atomic…

Q: Fill in the information missing from this table. nuclide protons neutrons A 22 27 ? 52 130 77 Se 34

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Q: What is the name of the element that is in group 5A and period 3? What is the name of the element…

A: A question based on periodicity properties that is to be accomplished.

Q: Fill in the information missing from this table. nuclide 203 81 TI protons neutrons 0 0 67 0 П 98 Z…

A: Nuclear chemistry is the study of atomic nuclei's composition, structure, reactions, and other…

Q: The proton mass is 1.007276 amu, the neutron mass is 1.008665 amu, and the electron mass is…

A: Given Mass of proton(mp) = 1.007276 amu Mass of electron(me) = 0.0005486 amu Mass of neutron(mn) =…

Q: Boron has 2 commonly occurring isotopes. 19.9% of Boron atoms have 55 neutrons and 55protons,…

A: We have to calculate the expected mass of B.

Q: How can I determine the element given the following information: 1 mol of atoms would contain 1.084…

A: Each atom is characterized by its unique protons and neutrons count which remain unchanged. These…

Q: Consider the following equation: The mass number of element X is: 226A + 15B → 80C + {x}X + 4 1n

A: The nuclear reaction is  226A + 15B → 80C + {x}X + 4 1n  Now , Total mass number in left hand side…

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: A sample of Aluminum foil contains 6.30 x 10^23 atoms. What is the mass of the foil

A: One mole of any substance contains 6.023 X 1023 units of that substance (atoms, ions or Molecules) .…

Q: A silver wire has a diameter of 0.500cm what length of the wire contains exactly 1.0×10²³ atoms of…

A: Given: Diameter of the wire = 0.500 cm  And the number of atoms of Ag wire = 1.0 X 1023 atoms.

Q: How many grams would 4.15 x 1021 atoms of Pb weigh?

A: Answer

Q: An atom of a particular element has a volume of 7.8*10^-31 m^3. What is this volume in cubic…

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Q: How many helium atoms are there in a helium blimp containing 537 kg of helium? Express the number of…

A: Given,Mass of helium = 537 kg                                   = 537 × 103 g     (1 kg = 103 g )…

Q: What did the scientist say when he found 2 isotopes of helium?

A: There are two isotopes of helium. He-4 and He-3 are the two isotopes of helium.

Q: Fill in the information missing from this table. nuclide 0 0 103 45 Rb protons 53 0 neutrons 74 0…

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Q: An unknown element X has the following isotopes: 1ºX (20.00% abundant, atomic mass = atomic mass =…

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Q: How many protons are contained in a circular puddle of liquid mercury that is 6.25 inches wide and…

A: In the given question we have to calculate the number of proton contained in a circular puddle of…

Q: Fill in the information missing from this table. nuclide protons neutrons Z A 0 67 98 0 0 0 0 0 0 0…

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Q: A newly discovered element consists of 2 isotopes, one with a mass of 11.34 amu and a relative…

A: Mass of one of the isotope newly discovered element =11.34 amu  Relative abundance= 17.2 %  Mass of…

Q: Given the following atomic symbol: 41 19 X Which element would be X?

A: To find out the element X, we need to check the atomic number of the element X in the periodic table…

Q: 3) The mass of a proton is 1.67 x 10-27 kg. What is the mass of a proton in Gigagrams? A) 1.67 x…

A: 1 Kg = 103 g 1 g = 10-9 Gg 1 Kg = 10-6 Gg

Q: Name various radioactive elements.

A: The various names of radioactive elements are named as in step 2.

Q: the history of the discovery of hydrogen and what properties they observed to identify it

A: Position of hydrogen in periodic table:   Hydrogen is regarded as rogue / disputable element because…

Q: Fill in the information missing from this table. nudide protons neutrons 0 40 51 50 24 Cr 0 0 Z A ☐…

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Q: Density of the hydrogen nucleus Calculate the density of the hydrogen nucleus using the information…

A: Given : Radius of hydrogen nucleus = 0.9 fm  Since 1 fm = 10-13 cm  Hence radius of hydrogen nucleus…

Q: If 1.4% of the mass of the human body is calcium, how many kilograms of calcium are there in a…

A: Calcium= 1.4% of mass of human body  Weight of man = 185 pound

Q: 5. When a 5.0 gram sample of Cu(NO,), • x H,0 is heated, 3.9 grams of the anhydrous salt remains.…

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Q: Consider the mass of Sulfur and Fluorine in compound A (16.6 g S, 9.80 g F) and compound B (23.2 g…

A: According to atomic theory the atoms do no react in arbitrary numbers but in multiples of fixed…

Q: Uranium has three isotopes : uranium-233, uranium-235, and uranium-238. Compare the number of…

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Q: Determine the mass of Strontium-86 (in u) given that the average atomic mass of Sr is 87.6126 u and…

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Q: An atom has a diameter of 3.00 Å and the nucleus of that atom has a diameter of 7.50 × 10-5 Å.…

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Q: A sample of aspirin synthesized in the laboratory contains 26.0 g of carbon and 15.4 g of oxygen. A…

A: Given : 1st sample contains 26 g of carbon and 15.4 g of oxygen. 2nd sample contains 8.16 g of…

Q: Which of the following ideas is NOT part of Dalton's Atomic Theory?

A: Atoms are destroyed during a chemical reaction is not part of Dalton atomic theory.