Calculate the number of nitride ions in 4.56 g calcium nitride.

Q: 8. How many oxygen atoms are contained in 5.25 g of NO2 gas?

A:

Q: Complete the table below for calculating the molar mass of the ionic compound magnesium bromide .…

A:

Q: Determine the number of moles in 3.42 × 10²³ formula units of MgBr₂.

A: The objective of this question is to calculate the number of moles in a given number of formula…

Q: Convert the 5.62 × 1025 atoms of B to moles.

A:

Q: Calculate the number of moles of He atoms present in 5.55 g of He.

A: Given that, mass of He= 5.55 g molar mass of He= 4 g mol-1 then,

Q: One ounce of dark chocolate contains 0.25 g theobromine, a compound related to caffeine. Calculate…

A: GivenMass of theobromine = 0.25 gChemical formula of theobromine =C7H8N4O2Molar Mass of theobromine…

Q: Calculate the mass (in g) of each sample.  5.73x10^20 SO3 molecules

A: Given:Number of molecules = 5.73x1020 molecules.Molar mass of SO3 = 80 g/mol.

Q: Cobalt (III) fluoride is reacted with sulfur tetrafluoride to form sulfur hexafluoride and cobalt…

A: Mass of sulfur hexafluoride (SF6) = 16.28 g  Mass of cobalt (III) fluoride (CoF3) = ?

Q: Calculate the total number of N atoms in 23.8 g N2O5. O 2.65 x 1023 total N atoms O 9.31 x1023 total…

A:

Q: Calculate the number of moles of He atoms present in 5.55 g of He.

A: Molar mass of He, Mwt = 4 g/mol Given weight, W = 5.55 g

Q: How many moles of carbon dioxide are present in 1.03x10^23  molecules of this compound?

A:

Q: Write the formula for each aqueous acid. sulfuric acid hydrobromic acid perchloric acidsulfurous…

A: sulfuric acid is dibasic acid and has formula H2SO4 Hydrobromic acid is monobasic acid  and has…

Q: Determine the number of moles of cesium in 50.0 g of cesium.

A:

Q: Calculate the total number of oxygen ATOMS in 1.926 g of magnesium perchlorate.

A: The total number of atoms available in the molecules of any particular substance is referred to as…

Q: alculate the number of moles of He atoms present in 4.65 g of H

A: Number of moles = weight / atomic weight    Given ,  weight = 4.65g Atomic  weight of He = 4 g/mol

Q: Copper(II) fluoride contains 37.42% F by mass. Use the percentage to calculate the mass of fluorine…

A: Given data as follows,CuF2 contains 37.42% F by mass indicates in 100g of CuF2 37.42g of F is…

Q: Calculate the number of oxygen atoms in 12.345 g of NH4NO2.

A: Calculate the number of oxygen atoms in 12.345 g of NH4NO2.

Q: Calculate the number of moles in 9.364 x 1018 atoms of Ca

A:

Q: Consider a 134.5 g sample of the compound manganese(IV) perchlorate. What is the chemical formula…

A: The chemical formula of ionic compounds is written by following electrical neutrality principle.…

Q: Determine the percent composition by mass of all elements in NCl5.

A: Mass percent can be defined as the mass of an element divided by the mass of compound which is then…

Q: 7. Calculate the number of Al atoms in 50.0 g of Al(BrO3)3.

A: The number of atoms of aluminium in Al(BrO3)3 is calculated as,

Q: Determine the number of nitrate ions in 177 g Mg(NO3)2.

A: Mole is defined as weight of substance divide by it's molar mass.…

Q: Cobalt (III) fluoride is reacted with sulfur tetrafluoride to form sulfur hexafluoride and cobalt…

A: Given  Mass of sulfur hexafluoride = 24.94 gram  Amount of Cobalt (III) Fluoride = ?

Q: Write the chemical formula, and then calculate the number of molecules in 1.00 g of lithium…

A:

Q: A.How many moles of boron tribromide are present in 5.93 x 10^22 molecules of this compound?…

A: The molar mass of bromine tribromide  (BBr3) is 250.52 g/mol .

Q: Calculate the number of atoms of iodine in a 7.88×10^6 g sample of iodine.

A:

Q: Calculate the number of carbon atoms in 12.8 mL of ethanol, C2H5OH , knowing that the density of…

A:

Q: Calculate the total number of ions present in 91.8 g of SrF2.

A: The molar mass of SrF2 is 125.62 g/mol. Then , number of moles of Strontium Fluoride in 91.8 g can…

Q: The total number of atoms in Ca(OH)2

A: Ca(OH)2 is a base and its name is Calcium hydroxide. Atom is the smallest entity of any element and…

Q: Calculate the number of moles of He atoms present in 6.17 g of He.

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: ·X· ÿ. X. What is the formula when X and Y form an ionic compound?

A: Answer: To form an ionic compound one type of atom loses some electrons to form a cation and another…

Q: 16. How many grams of vanadium are in 8.64g V 2 O 5

A: gV2O5→gVmolar mass of V2O5=181.88g/molgiven mass of V2O5=8.64gMolar mass of vanadium=51 we have to…

Q: Name each ionic compound. a. NH 4Cl c. Cu(NO 3) 2 e. Fe(NO 3) 2 b. PbSO 4 d. Ca(HCO 3) 2

A: While naming the ionic compounds, the cation is named first followed by anion.

Q: Calculate the number of molecules of iodine in a 4.62×105 g sample of iodine

A: Molar mass of I2 = 253.8g 1 mol of I2 = 253.8 g iodine 1 mol iodine = 6.022×1023 molecules of…

Q: A. Morphine is a type of pain medication derived from plants of the opiate family. It has the…

A: Given, Molecular formula of morphine=C17H19NO3  molar mass of morphine=285.34 g mol-1  then,

Q: Determine the number of moles in 5.73 × 10²³ formula units of CaCl₂.

A: 1 mole = 6.022 x 1023 entities

Q: Find the number of moles in 3.70 x 10^-1 g of boron

A: Grams of Boron = 3.70 × 10-1  gNo of moles of Boron =  To be determined Molar Mass of boron = 10.81…

Q: Calculate the amount of  anions (in moles) in 5.0 g of magnesium bromate.

A: Magnesium bromate is Mg(BrO3)2. The ions present in magnesium bromate are Mg2+ and BrO3-. So, BrO3-…

Q: A 4.00 g sample of a hydrate of nickel(III) bromide looses 0.793 g of water when heated. Determine…

A: It is given that the mass of hydrate of nickel (III) bromide is 4 gOn heating it losses 0.793 g of…

Q: Calculate mass (in grams) of sodium in 8.5 g of sodium-containing food additive. Na3PO4 (sodium…

A: To calculate the mass of sodium in 8.5 g of  Na3PO4 (sodium phosphate)

Q: In one of your experiments, you made magnesium oxide by burning magnesium in the air. How much Mg is…

A: Magnesium reacts with oxygen to make a compound called magnesium oxide. The bright light results…

Q: Complete the following table. Mass of Moles of Sample Molecules in Sample Total Atoms in Sample…

A: Answer shown in attachment provide in explanation box Explanation:

Q: Calculate the number of atoms of iodine in a 5.25×106 g5.25×106 g sample of iodine.

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: Calculate the number of atoms in 2.50 mg of Mg

A: We have been given mass of Mg = 2.50 mg and we have been asked to calculate the number of atoms in…

Q: The number of moles of water in a hydrated compound is calculated to be 0.04 moles. After heating…

A: Moles of water in hydrated form= 0.04 moles Moles of anhydrous( without hydration)= 0.005 moles

Q: Determine the number of moles in 4.21 × 10²³ molecules of CaCl₂

A: The mole is an amount unit that provides   measure of the number of atoms or molecules in a bulk…

Q: 5. Calculate the number of oxygen atoms present in 755.0 mg of nitrogendioxide gas.

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.