Uranium is used as a fuel, primarily in the form of uranium(IV) oxide, in nuclear power plants. A small sample of uranium metal (0.169 g) is heated to between 800 and 900 "C in air to give 0.199 g of a dark green oxide, U.Oy. (a) How many moles of uranium metal were used? (b) What is the empirical formula of the oxide, U,O,?

Q: When you react 3.9267 grams of Na2CO3 · nH2O with excess HCl(aq), 0.6039 grams of a gas is given…

A: Here we are required to find the number of water molecule attached to Sodium carbonate

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Q: 3.141 An impure sample of zinc (Zn) is treated with an excessof sulfuric acid (H2SO4) to form zinc…

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Q: (a) How many moles of ammonium ions are in 0.414 g of ammonium carbonate? mol (b) What is the…

A:

Q: The reaction of finely divided aluminum and iron(III) oxide, Fe2O3, is called the thermite reaction.…

A: Given,  Mass of Al = 500.0 g  Mass of Fe2O3 = 500.0 g  Mass of Fe produces = Actual yield of Fe =…

Q: 9. Which of the following has the greatest number of particles? (A) 9.012 g of Be (B) 1 mole of Na…

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Q: the mineral gibbsite has the formula al(oh)3. what mass in,in kg, of al is present in 2.9 kg of…

A: Given, mass of gibbsite,  Al(OH)3  = 2.9 kg = 2900 g Thus, moles of gibbsite can be calculated as,…

Q: In an experiment designed to produce calcium oxide by the chemical reaction: 2Ca + O2 → 2CaO…

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Q: 892.1 grams of isomaltitol, C12H24O11, was combusted in a furnace completely in an excess oxygen.…

A: The yield of water can be calculated as:-

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Q: The percent yield of this reaction is 65.0%. 2A1(s) +3 F2 (g) – 2AIF3 (s) Determine the mass, in…

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Q: Calculate the number of molecules present in each of the following samples.(a) 0.800 mol acetylene,…

A:

Q: (Mass of crucible is 24.98g. The mass of the cover is 11.36g. The mass of the crucible, cover, and…

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Q: (a) How many moles of ammonium ions are in 0.642 g of ammonium carbonate? 8.04e21 X mol (b) What is…

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Q: needed 1or tins question. One of the hydrates of KF is potassium fluoride dihydrate . A 63.1 gram…

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Q: The percent composition of an unknown substance is 46.43% C, 25.77% O, 18.05% N, and 9.74% H. What…

A:

Q: Be sure to answer all parts. Propane (C3Hg) is a minor component of natural gas and is used in…

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Q: (a) How many moles of ammonium ions are in 0.459 g of ammonium carbonate?  _______mol(b) What is the…

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Q: calculate the fraction of methane in the mixture.

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Q: (a) How many moles of ammonium ions are in 0.393 g of ammonium carbonate? mol (b) What is the mass,…

A: Formulae used : Moles = given mass ÷ molar mass A)Given :Mass of ammonium carbonate= 0.393 g Molar…

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.