percent abundance

Q: 5. A 300.0 mg sample containing Na,CO3, NaHCO3 and NaOH and inert material either alone or in some c...

A: Introduction :  It is given that sample which containing Na2CO3 , NaHCO3 and NaOH and are some inert...

Q: L. The hydrocarbon, dodecane, is used to make detergents. It is an alkane and has the molecular form...

A: The hydrocarbon dodecane is used to make detergents.

Q: Describe the procedure involved in flame test. Subject: Analytic chemistry

A: The flame test is an analytical procedure used in chemistry to detect the presence of certain elemen...

Q: A chemist,, Wishes to prepare 100.0 mL of a buffer of pH 10.0000 using the base methyl amine, CH,NH2...

A: Since you have posted multiple questions, we are entitled to answer the first only. 1) Given: Volume...

Q: 26. Calculate AG for the following reaction at 150 °C (attach your solution) C2H4(g) + 3 O2(g) 2 CO2...

A:

Q: A) B) C) D) :0: :0: る-chg +

A:

Q: answer with the correct number of significant figures but without "%" (Canvas will not let you to en...

A: Here we calculate all required data from the information. Please see carefully the answer, last two ...

Q: 4) Environmental chemists mostly define solutions in molar units. Environmental engineers typically ...

A:

Q: What is a buffer capacity? What are the factors that affect buffer capacity? Explain briefly how the...

A: In this question we will be talking about a buffer solution and will give the definition of buffer c...

Q: What is the melting point of a solution prepared by dissolving 25.0 g of KBr (Mm = 119.00 g/mol) in ...

A: Colligative properties: The colligative properties are those properties of solutions that depend on ...

Q: How many Liters are in 13.8 moles of CO2 gas @ STP? Group of answer choices A.13.8 moles x (1 L/22.4...

A: Here we have to find the volume occupied by 13.8 moles of carbon dioxide (CO2) at STP.

Q: ou may change your response by submitting again. ropose a method that will be successful in producin...

A: Given : We have to make product for the following reaction.

Q: After the recrystallization of triphenylmethanol, the product of the Grignard reaction, considering ...

A: Grignard reagent- it is organomagnesium halide. General  formula is  RMgX Where-X is halogen and R- ...

Q: From the following chemical equation: Cl2 F+ G+ H FeCl3 i) Draw the structure of F, G and H. ii) Bas...

A:

Q: _chloride ion bromide ion Lit F- Na* S2- K* Mg2+ Ca2+ 02- N3- P3- A3+ barium ion boron ion

A: While naming anion, 'ite' 'ate' or 'ide' suffix is used with the name of the element.  While naming ...

Q: What is t decimal praces. Answer should not include a unit label or other "lar mass of NH,CI? Round ...

A: Molecular mass: It can be defined as the sum of the atomic mass of each atom in the molecule. 1) fir...

Q: Nitrogen monoxide, NO, reacts with hydrogen to give nitrous oxide, N20, and water. 2NO(g) + H2 (g) →...

A:

Q: 2. Twenty-five mL of 0.100M lactic acid (K, = 1.4 x 104) is titrated with 0.097 M KOH. a) What is th...

A: The solution is as follows:  

Q: In the presence of excess thiocyanate ion, SCN , the following reaction is first order in iron(III) ...

A: For a first order reaction., Rate constant = 1.27 second-1 And the reaction complete 87.9%.It means ...

Q: Bromine monochloride is synthesized using the reaction Br, (g) + Cl, (g) 2 BrCl(g) K, = = 1.1 x 10-4...

A:

Q: How much solute (lauric acid) do you need to add to the solvent wax (stearic acid) to make a 100g ca...

A: Well, In order to calculate the amount of lauric acid and solvent( stearic acid) we need to calculat...

Q: Assuming the Debye Huckel Limiting Law applies, At 25°C, estimate the mean activity coeficient, of 2...

A:

Q: To determine the amount of a hypothetical compound KHA · H2A 2H2O in a pure sample, Senku asked his ...

A: The compound KHA.H2A.2H2A has a total of 3 protons(H+). Hence it is a triprotic acid. #(a): Given th...

Q: Suppose a student places a beaker on his balance and does not tare it. Then, he adds three substance...

A: The data given is,   Before After distilled water 57.160 g 70.990  g sodium acetate 70.990 ...

Q: A fermenter was filled with 10L of 0.6 mol/L sodium sulfite solution containing 0.003M Cu2+ ion and ...

A: A numerical problem based on mole concept that is to be accomplished.

Q: Mesitylene, a hydrocarbon that occurs in a small amounts in crude oil has an empirical formula of C3...

A:

Q: If you blow carbon dioxide gas into a solution of calcium hydroxide, a milky-white precipitate of ca...

A: When we blow carbon dioxide gas into a solution of calcium hydroxide, a milky-white precipitate of c...

Q: Sulfuric acid (H,SO, is a polyprotic acid. Write balanced chemical equations for the sequence of rea...

A: • We need to write the sequence of reactions that undergoes when sulfuric acid is dissolved in water...

Q: write an analysis of chlorophyll

A: Chlorophyll can be defined as the natural compound found in green plants.The green colour of plants ...

Q: By using either Suzuki-Miyaura coupling reaction or Heck coupling reaction, suggest a synthetic path...

A: Aryl halide and aryl bromonic ester , in presence of palladium catalyst, and heat Suzuki- Miyaura co...

Q: 3. Polymer structures i) Draw the chemical structure of the "mer", ii) compute repeat unit molecular...

A: The answer is as follows:  

Q: If 2.40 moles of H₂ and 1.55 moles of O₂ react how many moles of H₂O can be produced in the reaction...

A:

Q: ) the loss of an alpha particle by Thorium-232 j) the loss of a beta particle by Iodine-135

A: Nuclear chemistry can be defined as the branch of chemistry that deals with radioactivity, nuclear r...

Q: Nitrogen dioxide (NO,) gas and liquid water (H,O) react to form aqueous nitric acid (HNO,) and nitro...

A: Given: Moles of NO2 = 2 mol Moles of H2O = 5 mol

Q: Number of Number of Isotope Symbol Number of protons neutrons electrons 39K+

A:

Q: The reaction of nitrogen dioxide with fluorine 2 NO2 + F2-2 NO,F is first order in NO, and first ord...

A: The sum of the exponent term in the rate law for a chemical reaction is known as the order of the re...

Q: 28. Balance the following chemical reaction: C3H8 + O2 CO2 + H2O

A: To balance the equation we will balance the atom on reactant and product. Number of C , H and O on r...

Q: Brewing a bottle of beer (333 mL) requires the usage of 10, times more water. How many gallons of wa...

A: The volume of a bottle of beer is = 333 mL The volume of water in gallons to produce a bottle of bee...

Q: 2. Calculate the percentage by mass of oxygen in the following compounds a. NO2 b. CH;COOCH3

A: Since you have posted question with multiple subparts as per guidelines we can answer only three per...

Q: how does a basic anion interact with water? provide a net ionic equation for a basic anion

A: Answer: Basic anions are the conjugate base of weak acids. For example: CH3COO-, HCOO-, F- etc.

Q: The isomerization of methylisonitrile to acetonitrile CH 3NC(g) → CH 3CN( g) is first order in CH 3N...

A: Given  T1/2 = 2.00×102  Initial concentration [Ao] = 0.030 M  We have to find the rate constant(K) f...

Q: 2. Twenty-five mL of 0.100M lactic acid (K = 1.4 x 104) is titrated with 0.097 M KOH. a) What is the...

A: Soln

Q: Which of the choices below properly express the rate of the following reaction? CH4(g) + 20,(g) → CO...

A:

Q: For the gas phase decomposition of hydrogen peroxide at 400 °C 2 H202 2 H20 + 02 the average rate of...

A: Since you have posted multiple questions, we are entitled to answer the first only.  

Q: The reaction below reaches equilibrium in a closed reaction vessel. What is the effect of adding an ...

A: The correct option is:  

Q: conc. H2SO4 180 °C HO

A: The dehydration reaction of alcohols to generate an alkene. Dehydration means removal of water.  De...

Q: molar mass

A:

Q: If the initial concentration of N,05 is 0.60 M, what is the concentration of N2O5] after 2.0 hours? ...

A: Given,  Initial Concentration of N2O5, [A]0 = 0.60 M  Rate constant, k = 6.2x10-4 s-1  Time, t = 2 h...

Q: From the following chemical equation: Cl2 F+ G+H FeCl3 i) Draw the structure of F, G and H. ii) Base...

A: The reaction given is,  

Q: Question number 5 Calculate the molar mass of a strong electrolyte when a solution is prepared with ...

A: Here we use the van't Hoff equation that is π = iCRT. Here C is molarity that mole per litre.

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.