What is the number of moles of aluminum hydroxide, Al(OH)3, in a 800 gram pure sample? 38 VEIA BA

Q: 3 Cu +8HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H₂O In the above equation how many moles of water can be made…

A: Number of moles is calculated by dividing given mass by molecular mass.  A balanced equation is used…

Q: Reagent nitric acid is 63.73% HNO 3 by mass and its molarity is 14.95 M. Calculate its density in…

A: Given: Concentration of HNO3 = 14.95 M And mass percent of HNO3 = 63.73 % Assuming 1 L i.e. 1000 mL…

Q: 3 Cu + 8HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H₂O In the above equation how many moles of water can be made…

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Q: Mg(s) + 2 HCl(aq) −−−→ MgCl2aq) + H2(g)   given that the mass of magnesium is 0.030 g, find the…

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Q: 0.25 mol Fe2(CO3)3 contains___mol carbonate ions

A: The given data: The moles of Fe2(CO3)3 = 0.25 moles To determine = The moles of carbonate ions

Q: A student weighs an empty beaker at 81.702 g. A sample of MgSO4·??H2O is added to the beaker, and it…

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Q: A student weighs an empty beaker at 85.301 g. A sample of Na2SO4·??H2O is added to the beaker, and…

A: Mass of empty beaker = 85.301 g  Mass of beaker + hydrated salt = 86.607 g  Mass of beaker +…

Q: White limestones contains a large percentage of calcium carbonate, CaCO, What is the mass in grams…

A: The relation between mole and mass of any substance is given by - Mole = Mass/molar mass

Q: In the laboratory you are given the task of separating Ca2+ and Co2+ ions in aqueous solution. For…

A: To solve this question, we need to use solubility rules for each ion. Solubility of compound is…

Q: The density of ammonia, NH3, is 7.71 x 104 g/mL. Calculate the number of moles of ammonia in a 31.9…

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Q: 5.000 gram sample of hydrated beryllium carbonate, BeCO3·xH2O is heated according to the procedure…

A: To calculate the number of moles of H2O and BeCO3.

Q: Typical household bleach sold in the store contains 0.89 M NaClO. How many grams of NaClO are in 121…

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Q: a)How many moles of acetic acid are in 100 mL of vinegar? What is the molarity of acetic acid in…

A: Given:Mass of acetic acid= 5g Volume of solution =100 mL

Q: What mass of potassium is in 35.00 mL of .254 M K3PO4?

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Q: If you add 1.0 x 10^3 g of ethylene glycol as an antifreeze to a 4.0 kg of water in the radiator of…

A: Mass of ethylene glycol= 1.0×103 g gram molar mass of ethylene glycol =62 g  The calculation of…

Q: Balance the following equation by filling the gaps with appropriate numbers. PCI5 H20 H3PO4 HCI + +

A: In a balanced chemical equation number of atoms of each element on the reactant and products side…

Q: When 125 mL of 0.170 M Pb(NO3), is mixed with 145 mL of 0.220 M KBr, 4.92 g of PbBr₂ is collected.…

A: A limiting reagent is a species which is consumed completely during the reaction. It determines the…

Q: 2 Na(s) + Cl₂(g) Ang = gas 2 NaCl(s) mol

A: We have to calculate ∆ngas

Q: chemist adds  0.95L  of a  0.0010/molL  copper(II) fluoride  CuF2  solution to a reaction flask.…

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Q: Precipitating gravimetry is a technique to determine the amount of an analyte based on mass of the…

A: Precipitating gravimetry is a technique to determine the amount of an analyte based on mass of the…

Q: You need to make up 500.0 mL's of 0.5750 M NaCl (58.44 g/mol). What mass of NaCl should you measure…

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Q: Determine the mass in grams of 3.00 × 10²¹ atoms of arsenic. (The mass of one mole of arsenic is…

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Q: How many moles of Ba(OH)2 are present in 215 mL of 0.800 mol L Ba(OH)2? Express your answer…

A: Given: Volume of Ba(OH)2 = 215 mL = 0.215 L Concentration of Ba(OH)2 = 0.800 mol/L

Q: In the standardization of a solution of NaOH against 2.508 grams of oxalic acid (H2C2O4•2H2O), 42.53…

A: An acid exactly neutralizes the same number of equivalents of base and vice-versa. milliequivalents…

Q: What is the formula (solve for x) for the original hydrated sample of copper (II) sulphate? You…

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Q: Carbogenum (a mixture of gases 7% CO2 and 93% O2). It is used in surgical practice to stimulate…

A: At STP: Volume of a mole of a gas = 22.4 L So, Number of mol = Volume/22.4

Q: A hypothetical salt MX, consisting ofM lons and X lons, has K 5.19 x 1011, What volume (in liters)…

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Q: You have 235.5 g of Ba(OH)2   How many moles of barium hydroxide, Ba(OH)2, are present in 235.5…

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Q: A chemist adds 2.00 L of a 5.9 × 10M mercury(II) iodide (HgI₂) solution to a reaction flask.…

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Q: Does an insoluble compound form when solutions of Ca(NO3)2 and K2SO4 are mixed? If so, what is the…

A: The solubility of a substance can be predicted by using solubility rules  Some important solubility…

Q: 3CoCl2 + 2Fe(NO3)3 = 3Co(NO3)2 + 2FeCl3 Write the complete ionic equation and net ionic equation.

A: A molecular equation represents molecules of reactants and products, a complete ionic equation…

Q: A person drinks 1.50 × 103 g of water, H2O, per day. How many moles is this?

A: Given,Mass of water = 1.50×103 gMolar mass of water is 18.015 g/mol

Q: What is the molarity of a solution made with 126.32 g of calcium phosphate, Ca3(PO4)2, dissolved to…

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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.