Gold has 79 electrons per atom and an atomic mass of 197 u. Part A What is the total charge of all the electrons in 3.1-kg bar of gold? Express your answer to two significant figures and include the appropriate units. ? xª a b х-10п

Q: 1. What is the difference between carbon-13 and carbon-14? a. The number of electrons b. The number…

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Q: Do both members of the following pairs have the same number of protons? Neutrons? Electrons?…

A: An element is represented by the symbol XZA, where A is the mass number and Z is the atomic number.…

Q: 2. The approximate radius of a nucleus, r, is given by the formula r = A$(1.3x10-13cm), where A is…

A: Given: Atomic radius of Al = 143 pm Radius of nucleus=A13(1.3×10-13) cm

Q: 106. Carbon-12 contains 6 protons and 6 neutrons. The radius of the nucleus is approximately 2.7 fm,…

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Q: In Millikan's experiment, the charge on each drop of oil was measured in coulombs. Imagine the same…

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Q: (T/F) The atomic number of an elements tells us the number of protons and neutrons in an element.…

A: Hii there, since there are multiple sub parts posted. We are answering first three sub parts. If…

Q: A fictitious element only has two naturally occurring isotopes: X and Y. Isotope X has a mass of…

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Q: 6. Students in a chemistry course were asked the following question on unit exam: "Draw a diagram…

A: 1. If we consider 1 circle as 1 atom then both A and B diagrams are correct, where Diagram A…

Q: Give the number of protons and neutrons in X. 33- Express your answers as an integers. Enter your…

A: 1) The isotope given is 7433X.

Q: Two samples of carbon tetrachloride are decomposed into their constituent elements. One sample…

A: Given: Two samples of carbon tetrachloride are decomposed. One sample produces 38.9 g of carbon and…

Q: The astronaut then measures the abundance of silicon on the new planet, obtaining the following…

A: Isotopes are defined as the ones which have same atomic number but different mass number. Atomic…

Q: Two samples of carbon monoxide are decomposed into their constituent elements. One sample of liquid…

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Q: 105. The hydrogen atom contains 1 proton and 1 electron. The radius of the proton is approximately…

A: Radius of proton = 1fm = 10-15m Radius of electron = 53pm  = 53×10-12m As the nucleus contains…

Q: 1.Which of the following elements is not an alkali metal? a. Li b. Na c. K d. P

A: Note : As per our guidelines , we are supposed to answer first question please resubmit the other…

Q: atoms

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Q: 1. Models come in many forms including physical, 2-dimensional, conceptual, computer, and…

A: Given: Two dimensional models, conceptual, computer and mathematical models To find: scientist use…

Q: in chemistry class, a group of students dtermined the mass-t-charge ratio for an electron to be 5.64…

A: Given: mass to charge ratio = 5.64×1012 kg/C Charge of electron = 1.605×10-19 C   Note:There is typo…

Q: For the following atoms, give the number of protons, neutrons, and electrons: Part C Si Express your…

A: The number of protons in an atom is equal to the atomic number of that atom. In a neutral atom, the…

Q: Atoms are the smallest spherical particles that make up any matter. If 6.0x10^23 atoms of aluminum…

A: Avogadro’s number is used to determine the number of atoms present in 1 mol of an element.…

Q: An atom of rhodium (Rh) has a diameter of about  2.7×10−8cm2.7×10−8cm   If the atom is assumed to…

A: The diameter of the rhodium atom is = 2.7×10-8 cm The volume of rhodium atom in m3 is =?

Q: There are 1.699 x 1022 atoms in 1.000 g of chlorine.  Assume that chlorine atoms are spheres of…

A: Number of atoms in 1 g chlorine = 1.699 × 1022 atoms Number of atoms in 0.5 g chlorine = 0.5 × 1.699…

Q: The volume of a single tungsten atom is 1.07 x 10-23 cm³. What is the volume of a tungsten atom in…

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Q: Write True or False 1. John Dalton proposed the law of definite proportion. 2. Dmitry Mendeleev…

A: Given: 1. John Dalton proposed the law of definite proportion. 2. Dmitry Mendeleev arranged the…

Q: 1. Determine the number of electrons necessary to equal a mass of 1.15 x 10 grams.

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Q: -In this molecule, is Cl = Chlorine a neutral atom, an ion or an isotope? %3D -In this molecule, Mg…

A: NOTE : Since the molecular formula is not visible in the pic, I'm assuming it to be MgCl2 as per the…

Q: À fictitious element only has two naturally occurring isotopes: X and Y. Isotope X has a mass of…

A: Average atomic mass can be calculated by the following formula. Average mass=∑mass of…

Q: The charge to mass ratio of an electron was determined from Thomson's cathode-ray tube experiment to…

A: From Thomson's cathode ray ride experiment we determine charge to mass ratio of an electron.…

Q: Be sure your answers have the correct number of significant digits. mass natural isotope Ox10 (amu)…

A: The average atomic mass of element is equal to the product of the masses of the isotope and its…

Q: Which of the following could describe an element?   I II III All of them None of them

A: Matter: Matter can be defined as any component which occupies space and has mass.

Q: A fictitious element X has a molecular weight of 9.46 g/mol. If the volume occupied by one atom of…

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Q: 2) The spherical atomic nucleus of potassium has a radius of about 4 x 10-13 cm.; 6.02 × 1023 of…

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Q: An atom is 1.3x10-10 m in diameter. If an atom was 1cm in diameter, how tall would you be (1.78m).

A: The height of a person is 1.78 m when the diameter of an atom is 1.3x10-10 m or 1.3x10-8 cm. Now…

Q: How many atoms are contained in a block of aluminum metal measuring 6.0 mm x 5.0 mm x 15 mm? The…

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Q: How many protons and electrons are there in a neutral atom of each of the following elements? Part A…

A: The atomic number of an element tells about the number of electrons and protons present in an…

Q: Give the number of protons (p), neutrons (n), and electrons (e) in a) 15N3- b) 40Ca2+ SNER

A: Protons are positively charged particles. Electrons are negatively charged particles. Neutrons are…

Q: 7. For the following elements, give their name and their atornic number Name Atomic Number a. F b.…

A: Hi, as you have posted multiple questions and have not mentioned which question you want us to solve…

Q: How many electrons can have n = 50, l = 2. [Write your answer as a number.

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Q: Atoms are the smallest spherical particles that make up any matter. If 6.0x1023 atoms of aluminum…

A: Calculation of the mass of 1 atom of aluminium in picograms:

Q: Carbon-12 contains six protons and six neutrons. The radius of the nucleus is approximately 2.7 fm…

A: SOLUTION: Step 1: 1 fermi meter = 10-15 m 1 picometer = 10-12 m The volume of the nucleus is…

Q: What is the symbol of the element in Group 4A(14) and Period 2?

A: Given,  Group number of the element = 4A that is 14  And  Period number of the element = 2  What is…

Q: 1. A typical multivitamin tablet can contain 2.00 mg of vitamin B2 (riboflavin), and the RDA is…

A: The solution is given below -

Q: Five calcite, CaCO, (MM 100.085 g/mol), samples of equal mass have a total mass of 11.1 +0.1 g. What…

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Q: In the laboratory, 2.38g of copper combined with 1.19g of sulfur.  In a duplicate experiment, 4.26g…

A: The mass of the chemical chemical in a given state is equal to the sum of the individual masses of…

Q: Calculate the total mass of the protons and electrons in fluorine-19. Use 1.007825 amu as the mass…

A: Fluorine-19 has 9 protons and 9 electrons. Hydrogen-1 has 1 proton and 1 electron and its total mass…

Q: Determine the number of atoms in 1.96 mL of mercury. The density of mercury is 13.5 g/mL

A: Given: Density of mercury = 13.5 g/mL Volume of mercury = 1.96 mL We know,…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.