Find the no. Of Fe+2 ion in 10 mole of Fe0.930 .

Q: A vitamin syrup for infants contains 27.44 mg of zinc sulfate monohydrate (ZnSO4.H2O) and 100.00 mg…

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Q: H*. HỎ 1. OH ?? OMe 2. excess `MgBr 3. H30* HO. OH

A: The question is based on the concept of organic reactions.   we have to identify the Product formed…

Q: 64 g of Na2SO4 • xH2O were heated to yield 2.84 g of Na2SO4 What is the value of x?

A: NOTE : I think it is 6.4 g because 64 g of Na2SO4•xH2O will yield much more than 2.84 g of Na2SO4…

Q: 4.64 g of Na2SO4 • xH2O were heated to yield 2.84 g of Na2SO4 What is the value of x?

A: The decomposition reaction taking place on heating is  Na2SO4•xH2O ------> Na2SO4 + x H2O

Q: Fe  + O2 +    H2O  ~>   Fe(OH)3 How many grams of Fe(OH)3 will you get from using 26 moles of…

A: To calculate the grams of Fe(OH)3 from 26 moles of H2O, first we have to write the balanced chemical…

Q: A sample of an oxide of lead (oxide A) weighing 4.7840 g is heated to drive off oxygen to form oxide…

A: Empirical formula of oxide A = PbO 2   Empirical formula of oxide B = Pb 3 O 4   Empirical formula…

Q: 8) Suppose you had 20 moles of H2 on hand and plenty of O2, how many moles of H20 could you make?

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Q: compound containing only phosphorus and hydrogen vas fully combusted and yielded 17.9 g of P4O10 and…

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Q: What is the weight of nitric acid in 12.5N HNO3 solution? Use the following atomic weights H - 1…

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Q: K(s) + + (6)1) (soD + (6)o a How many moles of KCIO, can be made from 89 moles of 0,? b. If you have…

A: The balanced reaction is: 2 K(s) + Cl2 (g) + 3O2 (g) → 2KClO3 (s)

Q: Given the equation: HCO3 (aq)+ H20O= Co3(aq)+ H30 (aq). Identify the C HCO3 H20 Co3 2 H30*

A: Given , chemical reaction : HCO3- + H2O ---> CO32- + H2O

Q: How many K+ ions are in a sample of K2O that has a mass of 132.1 g?

A: To calculate number of K+ ions. 1 mole of K2O =2 x 39 + 16 =94g. 94g of K2O =6.022 x 1023 molecules…

Q: 4. An alloy of solder is tin and lead. Calculate the number of moles of each metal that are pres-…

A: Given that an alloy of solder is Tin(Sn) and Lead(Pb) .  Percentage amount of Sn present in alloy =…

Q: Jotassi 2Al(s) + 2KOH(aq) + 6H20)2KAI(OH)4 (aq) +3H2(g) b. The first reaction of sulfuric acid with…

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Q: An aluminum-containing compound has the formula Mg, Al,0, and is 44.98% oxygen by mass. What is the…

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Q: 4. Calculate the %O by mass in magnesium hydroxide, Mg(OH)2

A: The % of Mass can be calculated in relation to molar mass.

Q: s the mass % of NaHCO3 present in a solid sample weighing 1.5172 g. 50M HCi

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Q: Given 100 g-mol of molybdotellurate: 3(NH4)2O.2TeO3.6MoO3.10H2O, calculate: a) kg H b) lb Te c)…

A: We can calculate the molecular mass of the given compound by adding the mass of the atomic number…

Q: Consider the following hypothetical chemical equation 2A + 3B --> A2B3 Calculate the mass in grams…

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Q: What is the total number of moles of ions in 0.150L of 0.391M Na2SO4?

A: The total number of moles of ions can be calculated asMolarity = moles / litre0.391M = moles /…

Q: Suppose you were tasked with producing some nitrogen monoxide (a.k.a. nitric oxide). The equation…

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Q: 1. The processing plant you work for needs to produce 500 g of Li;Ns) from Lis) and N(e)- Your…

A: Since, you have posted two questions we will provide you the solution of first question. Please,…

Q: 4.92 g of MgSO4.nH₂O gives 2.40 g of anhydride when heated. Accordingly, find the value of n in the…

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Q: White vinegar is essentially a mixture of 10% acetic acid (CH3COOH) and water 90% (by mass).…

A: Given,  Mass of the vinegar = 1.00 kg  Mass percentage of acetic acid = 10%  Mass percentage of…

Q: Calculate the percent composition of tetracyanoplatinic acid, H2Pt(CN)4 to 4 sig figs each. wt% H…

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Q: The formula weight for HNO 3 , determined to ±0.01 amu, is: O a. 31.03 O b.62.01 c. 63.01 O d. 93.01

A: The mass of one molecule of a substance is known as molecular mass. The molecular mass of the sum of…

Q: Calculate the %O by mass in magnesium hydroxide, Mg(OH)2 .

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Q: calculate the number of moles of HCI in 5 ml of conc. HCl whose density 1.19.g/cm3 and it contains…

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Q: 32. The empirical formula of a compound is CH,O. If 0.0832 mole of the compound contains 1.0 g of…

A: Empirical formula of compound is [CH2O]X 0.0835 mole of compound contains 1g of hydrogen1 mole  of…

Q: Calculate the moles of NaHCO3 in 3.00 g of NaHCO3.

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Q: 2. Calculate the number of moles in 500 mg Na SO?. (MW of Na,SO,=293.8 mg/mmol). Dr. Marwa Nizar…

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Q: The American Dental Association recommends that an adult female should consume 3.0 mg of fluoride (F…

A: Mass percent 45.24% indicates that 100g sodium fluoride contains 45.24g.

Q: Calculate the percentage composition for KCLO4 ro 3 significant figures

A: The percentage composition of an atom in a compound can be found by the following equation.  % of…

Q: How many moles of oxygen are there in one mole of CGH1206? O 6.02 x 1023 moles 8.00 moles 6.00 moles…

A: one of of C6H12O6 has 6.00 moles of Oxygen so option - c correct

Q: How do I find the amount of mols dispensed in NaOH, with the correct amount of significant figures?

A: Molarity of a solution is given by,         Molarity = moles of solutevolume of solution (in L)

Q: Which of the following options contain the highest mass?

A: The formula for the calculation of mass from moles is  Number of moles = mass of the element /…

Q: Calculate the mass in grams of sodium in 8.5g of: а) NaзPO4 b) Na2C6H607

A: Given: mass of each compound = 8.5 g molar mass of Na = 23.0 g/mol molar mass of Na3PO4 = 163.94…

Q: 1. Which of the following operators can you use in an EXCEL formula to help you calculate the 5th…

A: Given: Excel operations in chemistry:

Q: In order to determine the formula of CoCl.xH;O, a student heated 0.476 g of hydrate. The mass of…

A: First of all we have to calculate the weight of water that goes off after being heated.  Convert…

Q: (8) Per chloric acid (0.200m)(0.125 L) Magnesium carbonate -7 Magnesium chlurate + CO,+ HaO 35.0g…

A: Given: Molarity of perchloric acid=0.200 M Volume of perchloric acid=0.125 L Mass of magnesium…

Q: Which contains the greatest mass of oxygen: 0.75 mol of ethanol (C2H5OH), 0.60 mol of formic acid…

A: Given: Moles of ethanol=0.75 molmoles of formic acid=0.60 molmoles of water=1.0 mol

Q: 2 Al + 2KOH + 6H2O = 2KAl(OH)4 + 3H2 Assuming more than enough water,  3.0 moles of aluminum, and…

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Q: y moles of O2 8

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

Q: If 0.525 g of Fe2O3.xH2O are heated and 0.408 g of Fe2O3 are obtained, what is the value of x?

A: Weight lose can be calculated as,Heating will remove the water of hydration so the difference in…

Q: 2 NaCl+CaO CaCL+ Na2O What is the theoretical yield of sodium oxide Na2O if 20.0 grams of calcium…

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Q: 4.0x1024 Pb atoms

A: Since you have posted a  question with sub-parts , we are entitled to answer the first three…

Q: What is the mass percent composition of (NHA257 Give answers in this order: 9%N. 96H, ES

A: The mass percentage composition of an element present in a compound can be found out by dividing the…

Q: Find the amount in millimoles of phosphorous in 850 mg of P2O5.

A: The amount of millimoles of an individual species can be found by converting the molecules to mloes…

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.