A sulfide iron was formed by combining 2.233 g of iron (Fe) with 1.926 g of sulfur (S). What is the empirical formula of the compound? (Given Fe= 55.85 g/mol; S=32.05 g/mol) O Fe5S9 O FeSO4 O Fe3S2 O FeS O Fe2S3

Q: Which two states of matter meet at the sublimation boundary of a phase diagram? solid O liquid O gas

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Q: Prepare 2 liter of approximately 0.50M Nacl using solid NaCl

A: Given, Concentration of NaCl solution = 0.50 M = 0.50 mol/L Volume of the solution = 2.0 L Preparati...

Q: Calculate the [H*] in an HCIO2 solution that has a pH of 3.84. (Answer to 4 decimal places).

A: The (H+) in HClO2 is given below 

Q: An element has the following natural abundances and isotopic masses: 90.92% abundance with 19.99 amu...

A: Given  natural abundances and isotopic masses: 90.92% abundance with 19.99 amu, 0.26% abudance with ...

Q: Write the letter of the pair of compounds that illustrates the given isomerism. CH CH CH HạN H3C CH ...

A: This question is related to isomerism. Isomers are molecules having the same molecular formula, but ...

Q: a) Propose a synthesis route to prepare the following product from the given starting material. Note...

A: Here we have to convert 1-phenylprop-2-en-1-one to 1-methyl-1,3-diphenylpropane-1,3-diol in a multis...

Q: Which is the summary of a large amount of scientific information?

A: Scientific Law or say laws of science is based on the behalf of repeated experiments and observation...

Q: Indicate the structure of product X and propose a detailed mechanism for its synthesis, under the co...

A: The Grignard reagent reacts with acid chloride to form tertiary alcohol. Initially, one mole of Grig...

Q: How many moles CO2 is produced by the complete combustion of 58g of butane (C4H10)? 2C4H10 + 13O2 →...

A: Butane reacts with oxygen to form carbon dioxide and water. The equation for the balanced chemical r...

Q: What I Have Learned (PORTFOLIO OUTPUT #4) Directions: Draw the structural formula for the given comp...

A: Molecule can be defined as species which is made up of two or more than two atoms.

Q: Once the layers were created, it needed to be separated or else what could have occurred? t-pentyl ...

A: When t-pentyl alcohol reacts in HCl, it forms t-pentyl chloride. This reaction follows the SN1 mecha...

Q: Potassium chromate and lead (II) acetate are both dissolved in a beaker of water, where they react t...

A: When we balancing chemical, numbers of species present in reactants are equal to number of species p...

Q: Give the IUPAC name of the compound below. Br Br

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Q: formula units

A:

Q: Complete the table provided below for nomenclature of alkanes.

A: The IUPAC name of the compound can be written on the basis of the main carbon chain, functional grou...

Q: a) Magnesium Sulphate b) Sodium Chlorate c) Aluminum Nitrate

A: Ionic compounds: Ionic compound  Ionic compound composed of cation which is positively charged (+cha...

Q: 1,3,3-trichloro-2-methyl- pentane 4-bromo-1-tert-butyl- cyclohexane

A:

Q: 20. Draw Lewis dot structures showing the formation of an ionic compound from each of the following ...

A: Lewis dot structure of given compounds are as follows

Q: Given that the total pressure over a solution of benzene and toluene is 100.0 Torr, calculate the mo...

A: Total  pressure over a solution of benzene and toluene = 100 torr Pressure of benzene in pure state ...

Q: Rank the following elements according to increasing ionization energy. Ca, O, S, Mg Li, Be...

A: Ionization energy:  Energy required to remove electron from a gaseous atom or ion. Generally, Ioniza...

Q: hy at the atomic level why an electron is ejected when the blue light hits the metal. Be sure to inc...

A: Given : We have to explain why upon heating at metal electrons get ejected.

Q: Substance Chemical Relative BP Relative Pvap Name Formula Water H20 [ Select ] [ Select ] Ethyl ethe...

A: The liquid molecules tend to convert into the vapour phase. In a closed container, the pressure of v...

Q: 0.550-gram sample of a nondissociating enzyme was dissolved in water at 25°C to yield 50.0 mL of sol...

A: Using osmotic pressure formula we can calculate molecular mass of enzyme. Formula is -              ...

Q: a)Rank

A: According to the question, we need to rank the following in order of increasing size of radius. (a) ...

Q: How many grams of Mgla are produced by the reaction of 25.0 g of Mg with 25.0 g of l:? *

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Q: The rate law for the decomposition of HI to l2 and H2 is rate = k[HI]? At 508 °C, the rate of the re...

A:

Q: 9) What intra molecular fopces can be used when binds to heceptors! R CH, ocH6.05 H2 NCH2 O05 CH HNC...

A: The intermolecular interactions are the intermolecular forces which mediate interaction between mole...

Q: (a) Draw the curly arrow mechanism to show bonds being broken/formed (b) Comment on the polarity of...

A: (a) The curved arrow mechanism is shown below

Q: This compound was synthesized from benzene by the scheme outlined. CH3 Br ČH3 1. CH3CI, AICI3 2. CH3...

A: The first step of this synthesis is called Friedel craft alkylation . It is an electrophilic aromati...

Q: Balance chemIcal eojuasias NO + H20 2)_ Nig Og + Fe. Ni COH)2+ Fe COH72

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Q: Give the IUPAC name of the compound be

A:

Q: a why alumi W

A: a. Ionization energy increases as a general trend across the left to right of period 3.

Q: CH3 CH3 СООН СООН NO2 ŠO3H ŠO3H Identify the reagents represented by the letters in the above reacti...

A: Reaction involved following concepts 1) Fridel crafts alkylation 2) sulphonation 3) oxidation of ben...

Q: Experiment [H2] (torr) (ICI) (torr) Rate (torr/s) 250 325 1.34 250 81 0.331 50 325 0.266

A: Given : We have to calculate the rate .

Q: A(g)+12B(g)-> 2C(g) 1. Determine the expression for the rate of the reaction with respect to each o...

A: Given: The concentration of C = 3 M Time = 25 s

Q: sample is the sample matter? (yes, no, not sure) reason water     stone     air inside ball     leav...

A:

Q: . The first step is: • Protonation • Deprotonation •   replace 2.2. : B-particle represents: • The b...

A: The mentioned reaction is an example of substitution of hydrogen atom by using an electrophile, whic...

Q: A reaction vessel is charged with 0.50 atm of A and 0.840 atm of B. Once the reaction reaches equili...

A: A(g) <===>2 B(g) Initial pressure of A = 0.50 atm Initial pressure of B = 0.840 atm Kp = 67.2

Q: Without reference to any data tables, choose which member of the following pairs has the lesser pred...

A: Entropy is defined as the randomness of the system.

Q: In an experiment to study the formation of HI(g), H2(g) + I2(g) ⇌ 2 HI(g) At equilibrium, [H2]...

A:

Q: What do Alkali do when forming compounds

A: Alkali metals compound form single positive ion by leaving one valance electron present in it. Alkal...

Q: - Provide a product for the following reactions. 1. Mg TMSO Br 2. PHCHO 1. HSCH,CH,SH 2. t-ButOK 3. ...

A:

Q: 1. Fill out the following table for part A Buffer B: Polyprotic Buffer A: PART A: Preparation of a B...

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Q: How many moles of NH₃ can be produced from 2.76 moles of nitrogen in the following reaction: N₂ (g) ...

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Q: Consider the gas-phase reaction of nitric oxide with hydrogen at 1280°C 2NO(g) + 2H2(g)→N2(g) + 2H2O...

A: The gas phase reaction of nitric acid and hydrogen at 1280 °C is given as 2 NO (g) + 2 H2 (g) → N2 (...

Q: Find the pH of 0.99 M solution of LIOH.

A: pH is power of hydrogen or potential of hydrogen. pH scale is used to determine the nature of a solu...

Q: 2. What is repulsive interaction between atoms due to?

A:

Q: 1. The decomposition of azomethane (C2H6N2) creates nitrogen gas and ethane gas (C2H6) with a rate c...

A:

Q: Calculation the pH of the following systematically. Make sure to include the pertinent reactions and...

A:

Q: The table below shows three organic compounds with their relative molecular masses listed. Chemical...

A:     Compound Molecular mass Boiling point A CH3CH2CH2CH2CH3 72 36 B CH3CH2OCH2CH3 74 X C CH...

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.