What is the molecular weight of a sample of ferrous sulfide heptahydrate (FeS-7H20)? (Round all numbers to the hundredths place) O A. 105.94 о в. 214.06 о с. 334.05 O D. 225.93

Q: After reading the mass spectrometer we have found that the substance under investigation contains…

A: The percentage of the different elements for the given compound is as follows: The percentage of…

Q: How many grams of tungsten(VI) oxide, and how many grams of hydrogen must you start with to prepare…

A:

Q: D. Particles 5. People usually use hydrogen peroxide (Agua oxigenada) H202 to clean their wounds. If…

A: We are authorised to solve only one question at a time. Please post rest of the questions…

Q: Upon burning Mg in air, magnesium oxide and magnesium nitride are formed. The correct statement…

A: Here, it is given that, upon burning magnesium in the air, magnesium oxide and magnesium nitride are…

Q: The Mole Concept Sulfur compounds are converted to H2SO4 while NO, compounds are converted to HNO3,…

A: Given reaction is :  NH4+ + 2O2 --------> NO3- + H2O + 2H+

Q: Lithium nitride reacts with water to produce ammonia and lithium hydroxide according to the equation…

A: Molar mass of D2O = (2.014 x 2) + 16 = 20.028 gm/mol Molar mass of ND3 = 14 + (2.014 x 3) = 20.042…

Q: ?How many atoms of hydrogen are present in 2.62 g of water 1023 7.83 .A 1022 8.76.B 1023 · 1.75.C O…

A: Number of hydrogen atom can be calculated by the help of number of moles. Mole is a counting unit…

Q: 6Li + N2 --> 2Li3N If 50 g Li react with 40 g N2, what is the maximum mass of lithium nitride…

A: To Solve this problem we will the given balanced chemical equation.  First we will find the limiting…

Q: Mass spec: M = 161 (100%), 163 (33%). Which of the following is %3D a possible molecular formula?…

A: In this mass spectrometry data, we are given two peaks whose intensity ratio is also given . So we…

Q: Assuming a Alka-Seltzer tablet weighs 2390 g and a fragment used in a experiment weighed 0.2500 g…

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Q: 2 AB + 1 CD --> A2D + CB2 OR 2 AB + CD right arrow  A2D + CB2 The atomic weight of A is 25.0 g/mol…

A:

Q: 14. The grams of SO2 produced will be: A) 65.70 B) 72.00 C) 81.35 D) 61.66 E) 63.59

A: SO2 molecular weight = 64. Therefore 1 mole of SO2 compound weight is equal to 64 grams ( 63.59).

Q: A 6.700-g hydrate of sodium sulfate, Na2SO4-nH2O loses 2.896 g of its mass upon heating. The mass…

A: In this question, we will determine the value of n ( where n is the number of water molecules )…

Q: 6. The compound para-aminobenzoic acid is composed of Carbon (61.32%), Hydrogen (5.14%), Nitrogen…

A: Answer:- Given - total mass of PABA =100g Carbon= 61.32%, Hydrogen= 5.14%, Oxygen=23.33% and…

Q: How many C atoms are in 1.00 mole of C12H22O11?

A:

Q: 3 A2B + 6 CD --> 6 AD + 3 C2B (OR 3 A2 B + 6 C D right arrow 6 A D + 3 C2 B) Calculate the number…

A:

Q: Calculate the mass, in grams, of 852 atoms of cadmium, Cd (1 mol of Cd has a mass of 112.41 g).

A: Mole : Mole of any element is ratio of atoms of element to the Avogadro number. If number of moles…

Q: 3.122 The natural abundances of the two stable isotopes ofhydrogen (hydrogen and deuterium) are…

A: Density of water =1 g/mL Volume of water = 400 mL Density =MassVolumeMass = Density× Volume=1…

Q: For the compound (Ca(OH)2) or calcium hydroxide, find the per cent composition of the element…

A: Given: The atomic weight of Ca=40 Molecular mass of calcium hydroxide= 1 x 40 + 2 x (1 + 16)=74…

Q: What is the actual yield of uranium hexabromide (UBr6), if 100.0 g of uranium is used and the…

A: Uranium reacts with bromine to form the uranium Hexa bromide. The mass of uranium is = 100.0 g The…

Q: An experiment requires that enough C6H12O6 be used to yield 17.2g of oxygen . How much C6H12O6 must…

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Q: substance with a molar mass of 231.40 g/mol is made up of 72.30% Fe, and 27.70% Oxygen. The…

A:

Q: What is the mass in grams of 9.76 × 1012 atoms of naturally occurring potassium?

A: mass = 6.32 x 10-10 g

Q: What is the molecular weight of compound BaCl₂2H₂O in unit amu (atomic mass unit) (U)

A: Molar mass is equal to sum of atomic mass of all elements

Q: How many atoms are in 48.4 grams of Pb? Atomic weight of Pb=207.20

A: Given data is as follows: The mass of Pb = 48.4 g The atomic mass Pb = 207.20 g/mol

Q: .763 Za" (ag) +2+2n(s) -166 A*() + Alja) Mg*(a) +2e Mgla) O zn Osn

A:

Q: How many grams of magnesium are required to produce 4.380 kg of Siı? (At mass: Mg-24.31; Si-28.09)…

A: Recall the given reaction,  SiCl4  +  2 Mg                   Si  +  2 MgCl2   4.380 Kg of Si is…

Q: 8.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Moles of CO2 and H2O are calculated as shown below,

Q: If 5.35 g Cu(NO3)2 is eventually obtained, how many grams of nitrogen monoxide, NÓ, would have…

A:

Q: Explain the concept of molecular weight ?

A: Molecular weight can be described as a sum of atomic mass of all the atoms present in a molecule.…

Q: Element Molar Mass (/ 14.01 16.00 24.31 32.07 55.85 1. The molar mass of sulfur is 32.07 s/mol. This…

A:

Q: Calculate the molar mass for Hydrogen gas using the formula PV/RT where P=718.9 V= 36.0 R=0.821 T=…

A: Ideal Gas Equation is : PV = nRT where,  P = Pressure of the gas V = Volume of the gas R = Universal…

Q: For numbers 20-25: Nitric acid is prepared from the reaction of 69.0 grams of nitrogen dioxide with…

A: Balanced chemical reaction: 3NO2 + H2O .....> 2HNO3 + NO  Mass of NO2 = 69.0g Mass of H2O = 36 g

Q: By using the atomic mass unit u= 1.6 x1024 gram, Avogadro's number will be equal to a) 6.02 x1022 b)…

A: The atomic mass unit is the unit of mass usually denoted by (amu). It is the parameter to express…

Q: Which weighs less, 0.25 mole of xenon atoms or 2.0 moles of carbon atoms?

A: The mass of 0.25 mole of xenon atoms can be calculated as

Q: 19.18. What is the empirical formula of a mineral contg. 3.37% HO; 19.10% AlO: 21.00% CaO; and…

A: Empirical formula is the simplest formula of a compound which show ratio of atoms or molecules in…

Q: 5. How many protons (P), neutrons (n) and electrons (e) are present in 18173Ta-³? a. 76 p 105 n 73 e…

A: (5) The number on the bottom left corner is the atomic number, which tells you the number of…

Q: Calculate the number of molecules of C2B formed

A: We have to find the number of molecule

Q: The mass ratio of sodium to chlorine is sodium chloride is 0.649:1.  A sample of sodium chloride…

A: 2NaCl ------> 2 Na + Cl2 Mass ratio of sodium to chlorine is sodium chloride is 0.649:1. Sample…

Q: How many aluminum atoms are there in 3.50 grams of Al₂O₃? (At. Wts.: Al = 27, O =16) a. 4.13 x 10²²…

A: Mass of Al2O3 = 3.50 g Molar mass of Al = 27 g/mol Molar mass of O = 16 g/mol Molar mass of Al2O3 =…

Q: Consider the following equation: The mass number of element X is: 247A + 18B → 89C + {x}X + 2 1n

A: 247A  + 18 B ---------------> 89C  +   xX  + 2  1n

Q: 3 A2B + 6 CD --> 6 AD + 3 C2B (OR 3 A2 B + 6 C D right arrow 6 A D + 3 C2 B) Calculate the number…

A: Given 3 A2B + 6 CD --> 6 AD + 3 C2BThe atomic weight of A is 15.0 grams/mol  The atomic weight of…

Q: 7.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: The amount of Carbon, Oxygen and Hydrogen in the compound is determined as given,

Q: To what weight of AICI3 would 0.280 g of AgCl correspond? Atomic weights for Ag = 108, Cl = 35, Al =…

A: Molecular weight of AgCl = (108 + 35 ) = 143 g/mol  So, 143 g AgCl = 1 mol AgCl  1 g AgCl = 1/143 =…

Q: 8. How many milligrams of iron are delivered from a 250. mg tablet of FeSO,-7H,O? Percentage %CaCl,…

A: Q9) U3O8 molar mass                 Atomic mass of U =238       Atomic mass of oxygen =16…

Q: 0.42139 17. G 5 19g. mass of Unknown sulfate. macs Of Empty Crucible & cover 18.33449 mass of…

A: Answer: This question is based on mass percentage calculation of sulfate in the given sample.

Q: What is the mass, in grams, of (a) 6.33 mol of NaHCO3 and(b) 3.0 * 10-5 mol of sulfuric acid?

A: (a) formula weight of NaHCO3 = 84.0 amu using 1 mol NaHCO3  = 84.0 g NaHCO3

Q: 4 g of Y reacts completely with oxygen. The following equation (ii) represents the reaction. 4 g Y…

A: From now onwards, please, post the question in English only. We have to predict the mass of product…

Q: 1.00 g of hydrated potassium carbonate, K2CO3•nH2O, is heated to 250 °C to give 0.836 g anhydrous…

A:

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.