5. The term mole is a unit used to represent (1) density of particles (2) an element or compound's gram-formula mass (4) reactivity of particles (3) kinds of particles

Q: empirical formula of bismuth chloride?

A: (a)   Given:          Mass of Bi (Bismuth)=0.687g          Mass of Bismuth chloride=1.032g

Q: Ethanol, the alcohol contained in alcoholic beverages, is composed of 52.2% C 13.0% H, and oxygen.…

A:

Q: Complete the table MOLAR REPRESENTATIVE NO. OF NO. OF SUBSTANCE MASS (g) MASS PARTICLE MOLES…

A: Carbon dioxide , Molar mass =  44.01  Representative particle :- Molecule Number of moles = 2.5…

Q: What advantage is there to using a counting unit (the mole) for amount of substance rather than a…

A: To explain the advantage of using mole unit instead of mass unit.

Q: A compound consists of 20.3 grams of Carbon, 5.12 grams of Hydrogen, and 7.9 grams of Nitrogen. (a)…

A:

Q: Calculate the number of (a) nitrogen molecules (N2 molecules) and (b) nitrogen atoms (N atoms) in…

A: From given data  Mass of N2= 0.111g  Also molar mass of N2= 28 molar mass of N = 14  Formula used…

Q: Complete the Avogadro's Statement for the element hydrogen: 1 mole of hydrogen hydrogen atoms =…

A: A mole is defined as that amount of the substance which has mass equal to gram atomic mass if the…

Q: How many formula units are in 170.6 g of the following substances? (a) Br₂: (b) MgCl₂: (c) H₂O: (d)…

A: We simply convert the mass to moles, and from moles to formula units. We use Avogadro's number to…

Q: Given that I-127 is the only natural isotope of iodine, what is the mass of one I atom and…

A: Given :  Given that I-127 is the only natural isotope of iodine, what is the mass of one I atom…

Q: A student weighs out 94.53 grams of sodium permanganate, NaMnO4.  How many moles of NaMnO4 is this?…

A: Moles— It is the ratio of given mass of a compound to its molar mass  Mole = given mass / molar mass…

Q: A chemist measures the amount of iodine solid produced during an experiment. She finds that  4.2 g…

A:

Q: The following data were obtained when a test tube containing barium chloride hydrate was weighed…

A: Mass of an empty test tube = 18.42gMass of the test tube containing hydrate (before heating) =…

Q: How many moles are equal to 4.5 x 1023 molecules of carbon monoxide? (Round to two decimal places).

A: No of CO molecules = 4.5 × 1023 molecules No fo moles = to be determined

Q: A 18.2 g of iron metal reacts with excess oxygen gas to produce 47.9 g of Fe3O4. The reaction…

A: Fe + O2 -------> Fe2O3

Q: Selenium dichloride, SeCl2, has a molar mass of 149.86 g/mol.  What is the mass in grams of 0.325…

A: Given, moles of SeCl2 = 0.325 moles molar mass of SeCl2 = 149.86 g/mol mass of SeCl2 = ?

Q: Hemoglobin is the oxygen carrying compound found in human blood. It is found to contain 0.3335% iron…

A:

Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

A: Since you have posted a question with multiple sub- parts, we will solve first three sub- parts for…

Q: Mole is the term used to express the quantities of substances involved in a chemical reaction. Mole…

A:

Q: A binary compound of carbon and hydrogen has the following percentage composition: 82. 66% carbon,…

A: Given a binary compound of carbon and hydrogen. Carbon % = 82.66 %Hydrogen % = 17.34 %

Q: The molar mass of iron is : M(Fe)=56 g.mol^ -1 a) Calculate the number of atoms present in 0.28g of…

A: We have to calculate the number of atoms in 0.28 g of Fe. Also we have to calculate the mass of Fe…

Q: Iodine (I) and fluorine (F) form a series of binary compounds with the following…

A: (a)

Q: What percent by mass of iron(II) phosphate is iron?

A: The molecular formula of Iron(II)phosphate is Fe3(PO4)2. Percentage by mass of any component can be…

Q: Individual atoms, ions, molecules are small and light that can't be measured with nomal balances.…

A: The given mole concept practice explain that we can do conversion between mass and mole using molar…

Q: The number of moles of potassium that contains 8.47×1025 atoms.

A: Given,Number of potassium atoms = 8.47 × 1025

Q: The following diagram represents the collection of elementsformed by a decomposition reaction. (a)…

A: a. The above diagram we can tell the empirical formula would be N atoms are in numbers of three and…

Q: Molar Mass Number of Representative Particle Mass Substance Number of moles (g/mol) (9) Particles

A:

Q: What is the molecular formula of each compound? (a) Empirical formula CH₂ (μ=42.08 g/mol) (b)…

A: a) Empirical formula = CH2 The Molecular formula can be calculated by the following formula,…

Q: A sample of pure silver has a mass of 15.4 g. Calculate the number of moles in the sample and silver…

A: Given-> Mass of Silver = 15.4 gm

Q: Be sure to answer all parts. Potassium is the second most abundant metal in the human body.…

A:

Q: A compound is known to contain 65.44% carbon and 19.36% oxygen by mass. Each molecule contains two…

A: In a 100 g of compound, 65.44% carbon and 19.36% oxygen is present by mass. By determining the…

Q: (b) H H Molecular formula Empirical formula Н. H H chemPad X₁X² H chemPad X₁X² →→ Help Greek Help…

A:

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.