Suppose that a person counts out gold atoms at the rate of one each second for the entire span of an 80-year life. Has the person counted enough atoms to be detected with an ordinary balance? Explain.

Q: Static electricity is observed when whic part of the atom is transferred? a. Protons b. Neutrons I…

A: Static electricity is observed when electrons are transferred .  Naturally occurring static is…

Q: In the following drawing, the green spheres represent atoms of a certain element. The purple spheres…

A: The left side of the reaction has one green element and two blue elements because they are of two…

Q: What pattern exists between an atom's mass and its vertical position in the periodic table? What…

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Q: 17. Sergio's teacher gave him a sample of a substance to identify. His teacher told him it is either…

A: Metal are hard , shiny, magnetic , and a good conductor of electricity .

Q: What kind of information can be determined from a mass spectrum?

A: Mass spectrum was obtained from mass spectrometer. Mass to charge ratio of positively charged atoms…

Q: What came first? protons neutral Atoms or nuclei? which came second?

A: Given What came first? protons neutral Atoms or nuclei? which came second?

Q: How many silver atoms are contained in 1.75 moles of silver?

A: 1 mole of a substance is equal to the Avogadro number of atoms.  1 mole =6.022 x 1023 atoms.

Q: D. Empty Volume Determination of Aluminum A sample of aluminum weighs 27.0 g and has a volume of…

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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: The radius of a tungsten atom is 137 pm. How many tungsten atoms would have to be laid side by side…

A: According to the unit conversion, 1 mm is equal to 1×109 pm. The diameter of tungsten is 274 pm.…

Q: A cube of solid aluminum has a volume of 8.87×103 cm3 and a density of 2.6989g/cm3. However, the…

A: Initial volume V1 = 8.87 x 103 cm3.Density, d = 2.6989 g/cm3.Initial mass, m1 = V1 x d = (8.87 x 103…

Q: A scientist has two samples of gas: The first sample contains one mole of argon atoms and has a mass…

A: 1 mole of any gas has equal no. Of atoms i.e., avogadro no. of atoms 6.023*1023 atoms. Or Equal…

Q: Rank the particles from most to least massive

A: In an atom; The mass of Neutron=1.693×10-27 kgThe mass of Proton=1.673×10-27 kgThe mass of…

Q: Aluminum (Al) is element 13 on the periodic table. A sample contains 4.56×1022 atoms of Al.…

A: In this question, we will calculate the amount of Al in grams unit.  You can see below.

Q: Calculate the number of atoms in sample. 12.899 g Pt

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: This question will walk you through the process of calculating the number of atoms present in a…

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Q: What is the atomic weight of copper

A: The atomic number (Z) of a chemical element is tells that the number of protons in the element.

Q: How many electrons are in gold atom? Does protons also take part in chemical reaction?

A: Gold is a chemical element with the symbol Au and atomic number 79, making it one of the higher…

Q: 1. All atoms of a given element have the same c. number of nucleons. d. number of protons. a. mass…

A: 1. Answer - The correct option is (d) number of proton. All atoms of an element have the same number…

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: How would you determine the accuracy of an atomic mass?

A: The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of…

Q: A 1.45 g sample of chromium contains ____ atoms.

A: The concentration of any substance can be expressed in different ways such as molality, molarity,…

Q: Show your calculations clearly. Suppose you are provided with a 36.55 g sample of potassium…

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Q: Classify each statement as an observation, a law, or a theory. If elements are listed in order of…

A: Observation is what is happening physically is observed through measurements. Law is made on the…

Q: Express your answer as a chemical equation?

A: From the figures we can see that Lavender spheres (A) are nothing but an isolated atom and tan…

Q: A modern penny weighs 2.5 g but is only 2.52% copper by mass. Calculate the number of cooper atoms…

A: given values :  mass of penny = 2.5 g mass % of copper = 2.52% formula of mass % : mass % = mass of…

Q: the average mass, in grams, of a single gold atom (mAumAu = 196.97 amuamu )

A: Given: Atomic mass of Au = 196.97 amu = 196.97 g/mol. Assuming 1 mole of Au atoms.

Q: If a different nail is coated with a 0.053 cm thick layer of zinc and the surface area of the nail…

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Q: Describe what is mass spectrometer in your own words.

A: Spectroscopy is branch of chemistry in which we deal with electromagnetic spectra that results from…

Q: Describe what you think happens on an atomic scale when you push a pencil across a piece of paper…

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Q: ny atoms c

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Q: True or False: A mass spectrum is normally considereda specific means for identifying a chemical…

A: Mass spectrometry is one of the important analytical technique used in organic chemistry. In this…

Q: places explain/ give example. The law of multiple proportions ATOMIC STRUCTURE AND SYMBOLS…

A: The fundamental quantity of compound is element. A compound is made of many such elements that…

Q: An unknown element (Uk) has three isotopes, seen in the table. One of the percentage values is…

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Q: It is discovered that it contains 7.759 %  by mass of  of the element oxygen (molar mass 16.00…

A: To calculate empirical formula of compound Ontarium , we first calculate moles of both Oxygen and…

Q: The density of gold is 19.3 g/cm3, and the average mass for one gold atom is 3.27×10-22 g. Seven…

A: Given the density of gold, d = 19.3 g/cm3. 1 cm3 = 1 mL Hence density of gold, d = 19.3 g/mL…

Q: 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…

A: Given, mass of Au = 3.7 g Molar mass of Au = 196.97 g/mol

Q: Determine the number of each type of atom in formula. BaCl2

A: Given: BaCl2

Q: How many titanium atoms are in a pure titanium bicycle frame with a mass of 1.34 kg ?

A: Given that mass of titanium bicycle frame = 1.34 kg = 1340 g Molar mass of titanium (Ti) = 47.867…

Q: For your research project, you need to use isotopic labels. For this you buy chlorine gas (Cl2) that…

A: The basic constituent of a substance is known as an atom that has a nucleus consisting of protons…

Q: Atoms

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Q: Based on the law of conservation of mass, if the total mass of reactants is 22 g, what will the…

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Q: Why are there no atoms of elements that have masses as stated on the periodic table?

A: In modern periodic table elements are arrangement based on their electronic configuration or atomic…

Q: In your own words, explain Why do scientists use models to study atoms? In your own words, explain…

A: Atoms are the smallest part to which elements are divided. Or we can say defining structure of…

Q: Calculate the number of atoms in sample. 0.082 g Sr

A: given sample is 0.082 g of Sr we know 1 mol has 6.022 × 1023 atoms

Q: What is the representative particle, mass(g), no. of particles of carbon dioxide

A: 1mole of any substance contains 6.023*1023 molecules or particles, it is also called one avagadros…

Q: How many copper atoms are in a pure copper statue with a mass of 105kg?

A: The value is given as follows:

Q: which contains more atoms, 1 gram on gold or 1 gram of silver? explain please

A: 1mol of any substance contains 6.023 × 1023  number of atoms. 1mol of any substance means its atomic…

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…

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.