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There are 5 protons so the atomic number is also 5. 9. • The mole (or mol) represents a certain number of objects. S-32 and S-32. occurs between a metal and a . Which type of chemical bond is formed between two atoms of bromine? 9. Which of the following atoms has the greatest nuclear charge? Which has the greatest number of atoms- 45 grams of Mg 45 ... Which of the following atoms has the greatest nuclear ... 1) Compounds may be represented by chemical formulas. In ... How many of the . B. : the amount of a substance that contains the same number of entities as there are atoms in 12 g of carbon-12. D) Si E) The 2s orbitals are the same distance from the nucleus in all of these atoms. 25. 1 × 10 4 mCi. ∴ Li with lowest molar mass would have the largest number of atoms. 2 In all atoms of bismuth, the number of electrons must equal the (1) number of protons (2) number of neutrons (3) sum of the number of neutrons and protons (4) difference between the number of neutrons and protons 3 Which symbol represents a particle that has a mass approximately equal to the mass of a neutron? All atoms of the unstable nuclides listed have (1) An odd number of neutrons (2) An odd number of protons ore neutrons than protons More protons than neutrons Stability of Six Nuclides Nuclide c-12 c-14 N-14 N-16 0-16 0-19 Stability stable unstable stable unstable stable unstable a) kinds and number of atoms but a different arrangement of these atoms b) number of electrons and protons but a different number of neutrons c) net dipole but different atoms involved in the bond d) molecular formula but a different overall charge 14. 149, 102, and 251, respectively . Which of the following elements has the greatest electronegativity? Which represents the greatest mass of sulfur? Sodium atoms differ from sodium ions in that sodium atoms contain If the number of covalent bonds to an atom is less than its normal valence it will carry a negative charge. 60 seconds . Answer: We know that 22.4 litres of any gas at S.T.P. Answer: Helium has the most number of mol out of all the options and will thus have the highest number of atoms. A. Reply. What is this number represent? Feedback: In order to compare the two samples, it is necessary to express both quantities in the same units. as the number of atoms in a sample of pure 12C weighing exactly 12 g. One Latin connotation for the word "mole" is "large . (1) acetate (3) hydroxide (2) carbonate (4) peroxide: 2: Table E: 13 Which formula represents an ionic compound? What is the mass number of an atom a. a. What is the maximum number of covalent bonds that can be formed by one carbon atom? 2021-08-04T08:33:19+00:00. 320 atoms oxygen c. 3.76×1023 atoms oxygen d. 24 6.02×10 atoms oxygen e. 1.20×1025 atoms oxygen In the first part of your "Empirical and Molecular Formula" lab activity, you measured the mass of a piece of aluminum foil and calculated the number of atoms it contained. 5 b. which sample contained the greatest number of moles of substance? 55.0 g Mg b. Q. 1 They are atoms which have the same chemical properties because they have the same number of electrons in their outer shell. answer choices . Which represents the greatest number of atoms? The formula of a compound that expresses the smallest whole- number ratio of the atoms present is called the empirical formula. Cl-35 and . Which represent the greatest number of atoms? Each atom has an integer number of neutrons, but the periodic table gives a decimal value because it is a weighted average of the number of neutrons in the isotopes of each element. . An atom of bromine has a mass about four times greater than that of an atom of neon. Questions 5—8 refer to atoms for which the occupied atomic orbitals are shown below. Which of the following element contains the greatest number of atoms? A 4g He B 46g Na C 0.40g Ca D 12g He Video Explanation Answer Correct option is D 12g He Number of atoms present in W g of a substance = M W ×N a . • Exactly 12 g of carbon-12 contains 6.022 x 10 23 atoms. If the volume of gas at S.T.P. 16. 3 They are atoms which have the same number of electrons and protons but different numbers of neutrons. Which of the following element contains the greatest number of atoms? (1) H 2 (3) CH 3 OH (2) CH 4 (4) NH 4 Cl: 4: look for the polyatomic ION (usually metal and nonmetal bonded but not here) Which sample contains the largest number of atoms A)1mg of C4H10 B) 1mg of N2 C)1mg of Na D) 1ml of water. a. • One mole of H 2 O molecules contains 6.022 x 10 23 molecules. (A) Is (B) 1s_il-2s (D) Is 2s (E) [Ar]4s Represents an atom that is chemically unreactive Represents an atom in an excited state Represents an atom that has four valence electrons Represents an atom of a transition metal Home / English / Chemistry / which represents the greatest number of atoms: 100g of Mg, 100g of S, 100g of Br, 100g of Rn need answer and a short expla. D) There are four times as many neon atoms as bromine atoms. You can use Lewis structures to show the configuration of the valence electrons. The molecular formula represents the actual number of atoms of each element in a molecule of the compound. C) Beaker #2 because arsenic has a greater mass than sulfur. Atoms of different elements with different atomic numbers but the same mass number are called isobars. [2] The negatively charged particle gained by an F atom to form an F ion is an electron. 1 × 10 -3 Ci. The mass number represents the SUM of the protons + neutrons in the nucleus of an atom. • One mole of H 2 O molecules contains 6.022 x 10 23 molecules. 10.0 atoms oxygen b. (1) α (3) (2) (4) p 1) 50.0 g of Al 2) 50.0 g of Cu 3) 50.0 g of Zn 4) 50.0 g of Fe 5) None of the Above Answer: 1) 50.0 g of Al Which represents the greatest number of atoms? D There are six shared electrons in a molecule of ammonia. • SI def. Tags: Question 18. 1)atomic number 2)number of protons 3)mass number 4)numbers of electrons 2Which quantity can vary among atoms of the same element? : the amount of a substance that contains the same number of entities as there are atoms in 12 g of carbon-12. the 4. 10. 6. NH 3 NH 4 + HCN CO 2 NO 2 a. Wrong Choices Explained: (1) The acetate ion, C 2 H 3 O 2 -, contains 2 oxygen atoms. 6 c. 8 d. 11 Explanation: The number of protons is the same as the atomic number. Look up the atomic weight (in grams per mole) of each of these 5 elements, and divide the given mass of the element by its atomic weight. 26. (a) 4g He (b) 46 g Na (c) 0.4 g Ca (d) 12 g He (b) 5. ; An object that has kinetic energy . So that is 2 moles of atoms per mole of NaCl. Which represents the greatest number of atoms? $\ce{K2SO4}$ has 2 moles of potassium, 1 mole of S and 4 moles of O per mole of $\ce{K2SO4}$. a. Al 2 (Cr2O7)3 b. Pb (HSO4)4 c. Pb3 (PO4)4 d. Al (C2H3O2)3 e. (NH4)3PO4 a. Al2 (Cr2O7)3 this formula represent 2 Al atoms + 3 (2 Cr atoms + 7 O atoms)=29 Some metals can form ions of different charges in different compounds. Let's say that you are given an amount of grams of a substance. The number of nearest neighbors (atoms that make contact) around each atom in a face-centered cubic lattice of a metal is. considered in order from top to bottom, the number of electrons in the valence shell 1) decreases 3) remains the same 2) increases 15. E) both effective nuclear charge increases down a group and the principal quantum number of the valence orbitals increases 4) Which one of the following has the smallest radius? Sodium atoms differ from sodium ions in that sodium atoms contain 50.0g Al c. 50.0g Fe d. 50.0g Cu e. all the same. Geeze, NaCl has 1 mole of Na and 1 mole of Cl per mole of NaCl. 1) silicon 3) nitrogen 2) sulfur 4) bromine 16. E) There are four times as many bromine atoms as neon atoms. the number of moles of arsenic atoms in Beaker #2. An atom of which of the following elements has the greatest ability to attract electrons? 4 3. e. 12 C has the same number of protons, neutrons and electrons. 1 B. And, lets assume that you are given 4.01 g of Carbon, and you are tasked to find the number of atoms in that . Atoms form bonds in order to fill their valence levels. number of electrons between the carbon atoms b. bond energy c. bond length d. all of these e. none of these 16. This similarity is most closely related to the atoms' A. number of principal energy levels B. number of valence electrons C. atomic numbers D. atomic masses page 5 periodic table review sheet SURVEY . 1 gram of sulfur 0.5 mole of sulfur 1 molecule of sulfur Woo Both same 6.02 x 1023 atoms of sulfur X Question 6 (1 point) Saved How many moles are in 1.204 x 1024 molecules of CO? d. 56 Fe has the same number of neutrons and protons. The exceptions are H and He, which can have only 2 valence electrons. Which represents the greatest # of atoms? 1.0 mol Cr b. 2 In all atoms of bismuth, the number of electrons must equal the (1) number of protons (2) number of neutrons (3) sum of the number of neutrons and protons (4) difference between the number of neutrons and protons 3 Which symbol represents a particle that has a mass approximately equal to the mass of a neutron? ( ) Which of the following atoms has the greatest number of unpaired electrons in its ground state? 95 Mo contains 53 neutrons. 3.0 × 1024lmolecules O2 × 1 mol O2 6.022 × 1023lmolecules O2 = 4.98 mol O2. in blood Answer • 1 mole contains 6.022 x 10 (ii) The least number of molecules. How many of the following molecules or ions contain double or triple bonds? Since the mass is same in each case, the element with the lowest molar mass would have the largest number of atoms. Thus, we can say in isobars the number of nucleons is the same but the number of protons are different. An atom of which of the following elements has the greatest ability to attract electrons? 19. H-3 and He-3. Answer: Hydrogen Since the mass of an hydrogen atom is the least in all the known elements, therefore 24 gram of hydrogen will contain the most number of atoms. 18. Use this idea to answer the next two questions. A) The atomic number is 9 and the mass number is 19. . which represents the greatest number of atoms: 100g of Mg, 100g of S, 100g of Br, 100g of Rn need answer and a short expla. Number of atoms in 4 g H e = 44 ×N a = N a Subatomic Particles in Four Different Atoms Which two atoms are isotopes of the same element? Answers: 2 to question: Which statement is true about an empirical formula?<br /> It is the true ratio of atoms in a formula unit.<br /> It is the simplest ratio of atoms in a formula unit.<br /> It represents the true molecular mass of a chemical formula.<br /> It represents the highest ratio of coefficients in a chemical formula. A. 55.0 g Ti c. 55.0 g Fe d. 55.0 g Zn; Question: Which represents the greatest mass? a. 55.0 g Mg. 55.0 g Ti. • Exactly 12 g of carbon-12 contains 6.022 x 10 23 atoms. ; A roller coaster at the bottom of the hill would have the highest potential energy. Whi element is equal to Avogadro number. 55.0 g Fe 55.0 g Mg 55.0 g Ti 55.0 g Zn 2-(select all that apply) which of the following statements are true about ionic bonding (select all that apply) which of the following statements are true about ionic bonding occurs when a cation and an anion form a bond occurs between a metal and a non . August 4, 2021 at 8:33 am. 75.0 g Cr B. 75.0 g Si O E. 75.0 g Ni The empirical formula and the molecular formula are mathematically related as follows: Molecular formula = n x empirical formula. Which of the following samples contains the greatest number of atoms? Which represents the greatest number of atoms? 7. 320 atoms oxygen c. 3.76×1023 atoms oxygen d. 24 6.02×10 atoms oxygen e. 1.20×1025 atoms oxygen In the first part of your "Empirical and Molecular Formula" lab activity, you measured the mass of a piece of aluminum foil and calculated the number of atoms it contained. A. N B. Cl C. S D. Ti E. Cu 17. ; As a roller coaster goes downhill, the potential energy is converted into kinetic energy. a) S b) He c) Fr d) Cl 15. The element could be ____. To calculate the mass of O2, we first need to divide the result by the Avogadro constant. Most elements can have up to 8 electrons in their valence level. Write both the name and the charge of the particle that is gained by an F atom when the atom becomes an F ion. A chemical bond is formed and energy is absorbed. 2- (select all that apply) which of the following statements are true about ionic bonding. . A chemical bond is broken and energy is absorbed. 2 C. 3 D. 4 37. In order to figure out how many atoms are in each sample, you would take 45, multiply it by 6.02 × 1023, and divided by the atomic mass. Also there is a formula, N= ( NA * W)/ M Where, N is the number of atoms or molecules NA is avogadro's number W is weight in grams. 75.0 g Cr B. • The mole (or mol) represents a certain number of objects. That gives the number of moles of each element. A)1 mole of atoms B) 10 grams of atoms C) 3 × 1023 atoms D) 11.2 liters of atoms The correct formula for the number of moles of gas in its wg is. a) 1 mole of CO2. Since two of the numbers (45 and 6.02 × 1023) will . 8. True. 2-, contains 3 oxygen atoms, the greatest number of those given in the question. Suppose the masses of sodium chloride and water provided in the table represent the mass of a level teaspoon of the substance, explain why the number of atoms and moles are different when the volumes are nearly identical? The general electron configuration for atoms of the halogen group is. Which statement best describes isotopes? occurs when a cation and an anion form a bond. . The general electron configuration for noble gas atoms is. A. metallic B. hydrogen 7 Which gas sample has the greatest mass? Use this idea to answer the next two questions. If the concentration of glucose (CH.0.) The atomic weigh of a triatomic gas is a. Which quantity represents the greatest amount of radioactivity? The diagram below represents the nucleus of an atom. Which sample contains the greatest number of atoms. (1) A and D (3) X and D (2) A and Z (4) X and Z Atom Total Number of Protons Total Number of Electrons Total Number of Neutrons A 6 6 . (3) The hydroxide ion, OH-, contains 1 oxygen atom. 1. 55.0 g Zn. For this case, lets say that that substance is Carbon (C). Number of atoms are calculated using a number known as "Avogadro's number." Okay, lets see a breakdown of this. As, argon has more number of protons in its nucleus, it will experience greatest nuclear charge. e. the similar electronegativity of the atoms causes repulsions between the molecules. M represents the atomic mass of substance. 5) In which of the following atoms is the 2s orbital closest to the nucleus? Refer to the Periodic Table for element 15 (phosphorus). Determine the number of moles of a) N atoms in 42.5g of Mg(NO3)2 b) N atoms in a sample of C7H5(NO2)3 that has the same number of O atoms as 12.6g C6H12O6 Chemistry Calculate what mass of carbon disulfide molecules contains the same number of sulfur atoms as 100.0 g of sodium sulfate. an atomic number of 15. [The • represents seven units of H2O attached to one unit of MgSO4.] _____ 10. Helium has the most number of mol out of all the options and will thus have the highest number of atoms. D)All atoms of a given element must have the same atomic number. So that is 7 moles of atoms per mole $\ce{K2SO4}$. 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Configuration for atoms of bromine has a mass about four times greater than of... Following molecules or ions contain double or triple bonds atoms as neon atoms Beakers # 1 and 2. Has an atomic number represents the actual number of atoms in a face-centered cubic unit cell is c. 50.0g d.. C. the intermolecular forces between the molecules are weak compared to ionic or covalent bonds is moles. > PDF < /span > 1 ) silicon 3 ) nitrogen 2 ) sulfur 4 ) bromine 16 bond! But a different number of atoms because there is one mole in each case, the with!

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