0.933 g sample of Nickle metal is heated in the presence of nitrogne gas forming 1.081 grams of a binary nitride product. How many moles of nitrogen are in this sample?

Q: A sample of silicon having a mass of 3.43 g combined with oxygen to form a compound with a mass of…

A:

Q: 1.15g sample of sodium reacts with 0.8g of sulfur to form sodium sulfide. (MM of Na = 23 g/mol and…

A: Interpretation: From the given information, the mole ratio of sodium to sulfur in the sample and the…

Q: 0.172 g of Mn was heated in the presence of oxygen to make 0.272 g of MnxOy.  Based on this data,…

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Q: How can a molecular formula be obtained from an empirical formula? What additional information is…

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Q: A compound of molar mass 229 g/mol contains only carbon, hydrogen, iodine, and sulfur. The analysis…

A: The ratio of the mass of carbon to hydrogen = 6:1 The ratio of moles of carbon and hydrogen =

Q: A compound with a molar mass of 164.12 g/mole is 58.54 % carbon (12.01 g/mole), 2.46% hydrogen (1.01…

A: Given :- Molecular mass of compound = 164.12 g/mol  composition of C, H, & O are 58.54%, 2.46%,…

Q: A binary compound of nickel and oxygen contains 78.06% nickel by mass. Is this a stoichiometric or a…

A: Given information: A binary compound of nickel and oxygen contains 78.06% nickel by mass. Let mass…

Q: How many moles of Phosphorus are present in 114.95 g of Phosphorus?

A: Given, mass of Phosphorus = 114.95 g Molar mass of P = 30.97 g/mol

Q: How many grams would 71,934,010,495 atoms of a substance weigh if it has a molar mass of 23.7889…

A: Number of atoms = 71,934,010,495 atoms  6.02×1023 atoms = 1 mol 71,934,010,495 atoms =…

Q: How many moles are there in a copper wire that was a mass 10.000 g?

A: Solution The number of moles AN exceedingly|in a very} given sample of an element/compound is…

Q: What is the mass, in grams, of a xenon hexafluoride sample containing 40.0 g of fluorine?

A: A xenon hexafluoride molecule consists of one atom of Xe and 6 atoms of fluorine. The formula of…

Q: If 0.587 g of nickel metal reacts with 1.065 g of chlorine gas, what is the empirical formula of the…

A: Answer :- A] NiCl2 Product formed in the is independent of the moles of reactants present as it…

Q: A compound of molar mass 135g/mol contains only carbon, hydrogen, bromine, and oxygen. Analysis…

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Q: How many moles are equal to 2.4x1024 atoms of Cu?

A: Given data: Number of atoms of Cu = 2.4×1024 atoms Avogadro's number = 6.022×1023 atoms

Q: A chemist is given a sample of the CuSO4 hydrate and asked to determine the empirical formula of it.…

A: Given,  Mass of hydrated CuSO4 = 42.75 g Mass of Unhydrated salt = 27.38 g  Formula of hydrate = ?

Q: Cortisone consists of molecules, each of which contains 21 atoms of carbon (plus other atoms). The…

A: The given data: The number of carbon atoms present in cortisone = 21 The mass % of the carbon in…

Q: What mass of iodine monofluoride must be used to produce 30.0 g of nitrogen triiodide?

A: Given data,Mass of NI3=30gBalanced reaction for the preparation of NI3 from IF6IF+N2→2NI3+3F2

Q: Calculate the mass of tetraborane that contains a billion (1.0x10^9) boron atoms.

A: Given :- number of boron atoms = 1.0 × 109 atoms  To be calculated :- mass of tetraborane (in grams)

Q: A sample of a “suboxide” of cesium gives up 1.6907% of its mass as gaseous oxygen when gently…

A:

Q: calculate the number of H atoms in 0.350 mole of glucose?

A: One mole of glucose = 6.023 × 1023 atoms.0.350 mole of glucose = 0.350 × 6.023 × 1023 atoms = 2.10 ×…

Q: how many hydrogen atoms are there in 80.0 g of phosphoric acid?

A:

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: A metal has the mass  of 12.00 g and 5.850 x 1022 atoms.  Calculate molar mass of the metal.

A: Formula use is, no of moles = weight/ molar mass

Q: A 0.700 g sample of phosphorous is reacted with excess oxygen to form a product with a mass of 1.604…

A:

Q: If a sample of ammonium sulfate weighs 4.23 g. How many ammonium ions are in that sample?

A: 1 mole = 6.022×1023 [Avogadro's number]  Molar mass :-  The mass of one mole of molecules of a…

Q: The mass fraction of an element present in a compound can be obtained by comparing the mass of the…

A: Mass fraction of an element is defined as the total mass of the element to the total mass (molar…

Q: 67.) A compound used in the nuclear industry hus the following compositions uranium, l67.411.;…

A: Firstly calculate the moles of the each elements considering hundred gram of the compound.

Q: If 2.50 g of aluminum metal is heated in Fluorine gas it’s found that 5.28g will combine with…

A: Given data,  Mass of aluminium = 2.50 g  Mass of F = 5.28 g

Q: How do you calculate the number of N atoms in 25.0 g of C7H5N3O6?

A: Given, Mass of TNT = 25g

Q: What is the mass in milligrams of 0.35 moles of cobalt?

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Q: A sample of an oxide of vanadium weighing 4.589 g was reduced with hydrogen gas to form water and…

A: Solution :    The empirical formula gives the simple whole-number ratio of elements present in a…

Q: A 0.933 g sample of Nickle metal is heated in the presence of nitrogne gas forming 1.081 grams of a…

A:

Q: How many GRAMS of fluorine are present in 1.03×1022 molecules of dinitrogen tetrafluoride ?

A: 1) Mole in terms of entities: 1 mole = 6.022 x 1023 entities Where  Entities =…

Q: 0.933 g sample of Nickle metal is heated in the presence of nitrogne gas forming 1.081 grams of a…

A: Mass of Sample = 0.933 gMass of Nickel Nitride = 1.081 gmoles of Nickel in sample = To be determined…

Q: Fluorine is so reactive that it forms compounds with mate-rials inert to other treatments.(a) When…

A: Fluorine is the most electronegative and reactive element of the periodic table. It requires one…

Q: How many g of iron are required to use up all of 25.6 g of oxygen atoms (0) to form Fe,03?

A: Given reaction,       4 Fe +  3 O2 → 2 Fe2O3

Q: How many moles are present in a (3.3x10^0) mg sample of calcium?

A:

Q: A Group 2 metal with an electron configuration of [Ne]3s2 combines with fluorine (F2) to produce a…

A:

Q: What is the simplest or empirical formula of a compound which is found to have a mole ratio    of…

A: Given;

Q: What is the percent by mass of phosphorus in PCI3?

A:

Q: asolim and water (H,O). What mass of water is produced by the reaction of 7.74 g of octane?

A: The balanced equation for the combustion of octane is,                                    2 C8H18+25…

Q: Calculate the average mass of 500. atoms of iron (Fe).

A: Atomic mass of one iron atom = 55.845 u molar mass = 55.845 gm/mol Use Avogadro's number to divide…

Q: Considering the limiting reactant concept, how many moles of copper sulfide are produced from the…

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Q: Calculate the number of grams Li3N can be formed from 1.75 moles of Li? Assume an excess of nitrogen

A: The reaction taking place will be  6 Li + N2 -----> 2 Li3N hence from the above reaction we can…

Q: 3. See the example in Introduction for set-up of calculations. Calculate the number of a) moles of F…

A: Number of moles of F and atoms of F in 32.5g of F2 calculated as follows

Q: A 1.271 g sample of aluminum metal is heated in a chlorine gas atmosphere, and the mass of aluminum…

A: We can calculate the mass of the chlorine from the mass of aluminium chloride and the mass of…

Q: Consider the compound QX3, where Q has a molar mass of 42.11 g/mol and X is 15.07 g/mol. A hydrate…

A: i) First you have to calculate the molecular weight of the QX3 ii) Then consider you took 100g of…

Q: t percent nitrogen by mass?

A:

Q: The formula of ytterbium(III) oxide is Yb₂O₃. What is the percent by mass of oxygen in…

A: Mass percent represents the composition of an element in the given compound, which is calculated…

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.