What are the formulas of the following substances? (a) PCI;; Molec. mass = 137.3 amu (b) Nicotine, C10H14N2; Molec. mass = 162.2 amu

Q: (a) In the certain hydrated salt MSO3-4H2O, the mass percentage of H2O is 44.71%. Identify the…

A: According to the answering guidelines, I'm posting the solution for the first question. Kindly post…

Q: The lanthanide elements react with oxygen to give compounds of the type Ln2O3 (where Ln stands for a…

A: Empirical formula :- The simplest formula which shows only the relative number of atoms of different…

Q: v, the number of v of Rf is 104 and its v is 267. Therefore the number of protons is One of the…

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Q: 1. Calculate the mass in grams of a single oxygen molecule, 02.

A: Molar mass of O2 is 32.0 g/mol  We have to calculate here mass of 1 molecule of oxygen i.e. O2

Q: (a) In the certain hydrated salt MSO3-4H20, the mass percentage of H2O is 44.71%. Identify the…

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Q: Write the empirical formulas of the following compounds: (a) Al,Br6, (b) Na,S,O4, (c) N,O5, (d)…

A: Interpretation -  To write the empirical formula of the given compounds -  Al2Br6 Na2S2O4 N2O5…

Q: A tube of Thothpaste contains 0.76 g of sodium monofluorphosphate (Na2PO3F) in 100 mL. a)what mass…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: A 1.912-g sample of calcium chloride is decomposed into itsconstituent elements and found to contain…

A: From given data  mass of calcium chloride = 1.912 g  mass of Ca = 0.690 g  mass of Cl = 1.222 g…

Q: A rock is 5.0% by mass fayalite (Fe₂SiO₄), 7.0% by massforsterite (Mg₂SiO₄), and the remainder…

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Q: the atomic masses of 10B and 11 B are 10.012938 and 11.009305 amu, respectfully. The average atomic…

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Q: Determine the empirical formulas of the compounds withthe following compositions by mass:(a) 10.4%…

A: % by mass of C = 10.4%% by mass of S = 27.8%% by mass of Cl = 61.7% Assuming the mass of the…

Q: In a 6.43E1 g sample of NaHCO, how many grams of sodium are present? Use two decimal places in…

A: Mass of NaHCO3 = 6.43E1 = 64.3 g

Q: the number of copper atoms in a 3.0g lump of copper is 2.8x1022. how many electrons are present  in…

A: the number of copper atoms in a 3.0g lump of copper is 2.8x1022.  The number of electrons present in…

Q: Saccharin, a sweeting agent, has mass com- postion 45.89% C, 2.75% H, 7.65% N, 26.20% O, and 17.50%…

A: Empirical formula is obtained from molecular formula. Empirical formula represents the simple ratio…

Q: Which of the following has more atoms: 3.55 g ef lithium atoms or 19.1 g of nickel atoms?

A: Mass of lithium = 3.58 g Mass of nickel = 19.1 g

Q: The ratio of the mass of O to the mass of N in N20z is 12:7. An- other binary compound of nitrogen…

A: The given ratio of mass O to the mass of N in N2O3 is 12:7 Mass of O in N2O3 = 3x16 amu…

Q: There are 6.02x1023 atoms in one mole of any element. Assuming that the titanium rod in the question…

A: Given that, Number of moles of titanium = 4.70 moles

Q: p3, mass n03 %3D

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Q: On a periodic chart of the elements, molar mass (M), also called atomic weight, is often listed as…

A: A chemical compound consists of two or more different elements which are bonded with each other…

Q: (a) In the certain hydrated salt MSO3-4H20, the mass percentage of H20 is 44.71%. Identify the…

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Q: What is the mass, in grams, of each of the following samples? a.) 2.75 mol of iron, Fe  b.) 0.115…

A: Mole of solid sample is calculated by below formula,

Q: Samples of illicit “street” drugs often contain an inactivecomponent, such as ascorbic acid (vitamin…

A: A chemical species formed from a certain atom, which cannot be divided into further small particles…

Q: 3.123 In the formation of carbon monoxide, CO, it is foundthat 2.445 g of carbon combine with 3.257…

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Q: The atomic mass of fluorine is 18.998 amu, and its mass spectrum shows a large peak at this mass.…

A: The isotope of fluorine having a mass of 18.998 amu is highly abundant by a very large amount, which…

Q: What is the mass of a mole of electrons if one electronhas a mass of 9.11 × 1 0 -28 g?

A: Because, 1 mole=6.022×1023 molecules/particles Therefore, 1 mole of electron=6.022×1023 electrons

Q: If 2.00 grams of Epsom salts are allowed to dehydrate in a warm oven overnight, the mass of the…

A: Mass percent of water in Epsom salt = 100 x Mass of water/Mass of Epsom salt Mass of Epsom salt =…

Q: Nitrogen forms more oxides than any other element. Thepercents by mass of N in three different…

A: Empirical Formula: The empirical formula of a compound is the simplest whole number ratio of each…

Q: If the mass percentage of O in a sample is 68% and the total mass of the sample is 4.128 Kilograms-…

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Q: hat is the mass percent of hydrogen in decaborane, B10H14?

A: Percent composition is defined as the ratio of  mass of single  element in one mole  to the mass of…

Q: A chloride of silicon contains 79.1 mass % Cl. (a) What is theempirical formula of the chloride? (b)…

A: Empirical formula It gives the simplest whole number ratio of elements present in a compound. It is…

Q: the atomic mass of C is 12.011u. How many moles of C are there in 3.50g sample of carbon?

A: Converting Mass to molesAtomic Mass of C = 12.011 Mass of C in a sample = 3.50Calculate the Number…

Q: A toy top has a mass of 32.0Cu. How many atoms Сu are in this spinning top, given that the average…

A: One mole of any substance consists of 6.022×1023 particles.Number of moles of any substance present…

Q: 2. A given sample of caffeine, C,II,N,0, has 0.23 g of carbon atoms in it. Hle nitrogen atoms are…

A: Mass of C atom = 2.3 g  Molar mass(MM) of C = 12 g/mol Moles of C = mass/MM          = 2.3/12   =…

Q: 4. A 1.628-g sample of a hydrate of magnesium iodide is heated until its mass is reduced to 1.072 g…

A: Answer :- MgI2.8H2O The formula of given Hydrated Magnesium iodide = MgI2.8H2O…

Q: In using a mass spectrometer, a chemist sees a peak at a mass of 30.0106 AMU. Of the choices 12C2…

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Q: An unknown anhydrous salt has the folowing mass composition 65.95% Ba and 34.05% Cl. Dtermine the…

A: Given information:Percent composition of Ba by mass = 65.95 %Percent composition of Cl by mass =…

Q: Calculate the mass percent of H in C,HgO.

A: Since, molar mass of carbon = 12.0107 g/mol Molar mass of hydrogen = 1.0079 g/mol Molar mass of…

Q: The weed killer “Roundup” has a chemical formula of ( C3H8NO5P) What is its molecular mass?

A: The overall mass of one molecule of a substance is generally known as molecular mass (or molar…

Q: Suppose 2.367 g of TiO2 sample evolves 0.143 g O2 , what is the %Ti02 in the sample?

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Q: 127: An iron ore contains 38% Fe203 by mass. What is the maximum mass of iron that can be recovered…

A: 127. Given information, An iron re contains 38% Fe2O3 by mass Mass of iron ore = 10.0 kg

Q: a compund with the formula MNO3 contains 28.3% oxygen by mass. What is the identity of element M?

A: Mass percentage is defined as the ratio of mass of the substance ( here element) to the total mass…

Q: mass

A: 0.415 mol sample of MnX2O7 has a mass of 85.14 g.  What is X?

Q: How many atoms (total) are present in a 3.45 x10-2 m3 sample of Al2O3, which has a density of 3.95…

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Q: A 0.415 mol sample of MnX2O7 has mass of 85.14g identify X indicating the symbol and not the name of…

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Q: 2. How many moles would there be in 500 atoms of Silver? - 3. What is the mass of exactly 230 Sodium…

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Q: Boron, atomic number 5, occurs naturally as two isotopes, 10B and 11B, with natural abundances of…

A: Isotopes are elements with the same number of protons but differ in the number of neutrons. The…

Q: The characteristic odor of decaying flesh is due to the presence of various compounds. One such…

A: Given data contains, Mass percent of carbon is 62.04%. Mass percent of hydrogen is 10.41%. Mass…

Q: xplain how the atomic mass unit (amu) is defined and (ii) explain how the definition of an amu in…

A: A Unit of mass is used to explain the atomic weight....i. e amu. Atomic mass is the quantity of…

Q: How many gold (Au) atoms are there in a 5.0 g sample of that is 50% Au by mass?

A: Answer: 7.6421 × 1021 number of gold (Au) atoms are there in a 5.0 g sample of that is 50% Au by…

Q: An antacid tablet weighing 0.928 g contained calcium carbonate as the active ingredient, in addition…

A: Since you have posted multiple un-related questions, we are entitled to answer the first only.