Calculate the number of atoms in each element.a. 25.8 g of Hg               c. 150 g of Arb. 0.0340 g of Zn            d. 0.124 g of Mg

Q: Convert the mass of zinc in the data table into moles of zinc using the atomic mass of zinc. Data…

A: We have given that  Mass of of zinc = 0.55g Molar mass of Zinc = 65.38g/mole  No of mole = Given…

Q: a. What is the mass of 1.49 x 1024 atoms of chlorine? grams b. What is the mass of 9.12 x 1023…

A: a) mass of 1.49×1024 atoms of chlorine.

Q: Calculate the mass, in grams, of each sample.a. 1.1 * 1023 gold atomsb. 2.82 * 1022 helium atomsc.…

A: Given data: Avogadro's number NA, 6.023×1023atoms Convert first the number of atoms to moles using…

Q: Which statement is incorrect?  A. All molecules are compounds but not all compounds are molecules.…

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Q: A given compound always contains the same proportion (by mass) of the elements. This principle…

A: A compound is formed by the combination of two or more elements through chemical bonding.

Q: ne number of atoms

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Q: Which of the following samples of gases contains the greatest number of atoms? (Relative atomic…

A: 4th option is correct that is 13.0 g of C2H6

Q: A student has a sample of zinc that weighs 22.19 g How many zinc atoms are in this

A: Given :- mass of Zn = 22.19 g  To be calculated :- number of Zn  atoms  molar mass of Zn = 65.38…

Q: A sample of cyanic acid, HCN, contains  3.33 x 1022 atoms. a. How many moles of cyanic acid are in…

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Q: 1 1 25 Which chemical formula is correct for Iron (III) Cyanide? C. Fe(CN)₂ D. Fe₂(CN), A. FeCN3 B.…

A: The Answer to the following question is- 25. Iron(III) cyanide means that iron exists as a ferric…

Q: What is the average mass (in grams) of a single nitrogen dioxide molecule? A. 3.6 x 10-26 g B. 2.77…

A: Since mass of 1 molecule  = molar mass / Avogadro's number Molar mass of Nitrogen dioxide (NO2) = 14…

Q: 23. a. Calculate the average mass in grams of an individual atom of silver. b. Calculate the mass in…

A: 1 mole Ag atoms = 6.023 × 1023 Ag atoms. mass = mole X molar mass for elements, atomic mass = molar…

Q: A sample of cyanic acid, HCN, contains  3.33 x 1022 atoms. a. How many moles of cyanic acid are in…

A: Given : Total number of atoms of HCN = 3.33 X 1022 atoms.

Q: . What is the mass, in grams, of each of the following? a. 2.3*10^-3 mol Sb b. 3.59*10^-2 mol Ba…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The element rhenium (Re) has two naturally occurring isotopes, 185 Re and 187 Re. Rhenium is 62.60%…

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Q: There are 1.5 x 1022 atoms in A. 0.025 mol of gold B. 4.0 g of helium C. 2.5 x 1044 moles of copper…

A: Number of atoms = moles of element X Avogadro's number  where Avogadro's number = 6.022 X 1023

Q: You have a 125-g sample of one of these substances. You determine that it is made of 16.7 g H, 75.0…

A: A chemical compound often comprises the same elements in very same compositions by mass, according…

Q: How many gold (Au) atoms are there in a 10. g sample of that is 50% Au by mass?  a. 6.2 x 1022 b.…

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Q: For number 5 to 7, consider the following reaction. The complete combustion of methane, CH., can be…

A: CH4 (g)+ 2O2 (g)-------> CO2 (g)+ 2H2O (g) Number of moles = mass ÷ (molecular mass)

Q: sample of aluminum contains 2.91 × 1022 atoms of aluminum. What is the mass of this sample?  [Molar…

A: Given that: Molecules of Al = 2.91×1022 atoms  Molar mass of Al = 26.98 g/mol  1 mol = 6.023×1023…

Q: 1. Determine the number of atoms in 0.475 g of palladium (Pd). atoms 2. Determine the mass of 139…

A: One mole of any element contains approximately 6.022 x 1023 atoms of that element. Therefore, to…

Q: Determine the mass of sodium in 15.5 g of NaNO3.   a. 17.4 g   b. 0.298 g   c. 4.19 g   d.…

A: Given that,mass of NaNO3 = 15.5 g Molar mass of NaNO3 = 84.9947 g/mol moles of NaNO3 = (mass of…

Q: An element's percentage of the total mass in a compound containing the element. A law stating that…

A: The composition of a chemical compound is determined using elemental analysis of inorganic elements.…

Q: Which of the following contains the MOST atoms? You shouldn't need to do a calculation here. A. 10.0…

A: Generally the no. of atoms present in some sample is obtained by dividing the sample weight by the…

Q: Determine the mass percentage of F in C6H11OF3. A. 36.50% B. 37.33% C. 39.54% D. 40.67% E. none of…

A: Mass of one mole of Carbon, Hydrogen, Oxygen, and Fluorine are calculated as follows,

Q: Classify each element as atomic or molecular.a. neon b. fluorine c. potassium d. nitrogen

A: a. The elements that have single atoms as their naturally existing basic units are known as atomic…

Q: When 0.210 g of iron (atomic weight = 55.85 g/mol) is burned, 0.341 g of iron oxide is obtained.…

A: Given  Wt. If iron = 0.210 g  Wt. Of iron oxide = 0.341 g  Atomic weight of iron = 55.85 g/mol…

Q: Predict the product of the reaction below

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Q: 19. A certain sample of dichlorine heptoxide consists of 4200 oxygen atoms combined with chlorine…

A: According to the given data the sample is dichlorine heptoxide. The sample consists of a total of…

Q: Calculate the mass of Na in 80.0 g NaCl. A. 31.5 g B. 6.2 g C. 40.0 g D. 1.9 g

A: molar mass of NaCl  =mass of Na +mass of Cl                                   =23+35.5…

Q: 5. Compound X is composed of 52.2% carbon, 13.0% hydrogen, and the rest oxygen, by mass. The…

A: Compound X contain C= 52.2%                                    H= 13%…

Q: Which has the greater number of particles, 3.011x1023 N2 molecules or 14.01 g N2 molecules? a.…

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Q: Determine the number of atoms in 53.0 grams of bromine, Br. (The mass of one mole of bromine is…

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Q: 2. g/mL. Determine the number of hydrogen atoms in one liter of water. The density of water is 1

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Q: A 3.69 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 5.05 x 1022…

A: a.The total number of nitrogen atoms in 3.69g sample of nitrous oxide is calculated as,

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.