What is the percentage composition by mass of the substance shown below? % C = i % S = i %H = i How many molecules are in 12.0 g of this substance? i i x 10 molecules

Q: 1 mole of CO, gas in a container has a pressure of 1 atm. Ar gas is added to the container such that...

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Q: What is the expected product of the reaction shown? HBr он Br Br II Br IV O II O IV O none of these

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Q: Give the major organic product(s) for each of the following reactions

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Q: Current Attempt in Progress 2.050 g of an unknown sample contains H, S, and O. If the compound conta...

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Q: What mass of KOH is necessary to prepare 830.0 ml of a solution having a pH = 11.49? Mass = g

A: Find the mass of KOH....

Q: Which one(s) is/are NOT the correct way to write the electron configuration for mercury (Hg)? FYI th...

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Q: -OH Age O Ci

A: The product is as follows:  

Q: (S)-(+)-Monosodium glutamate (MSG) is a flavor enhancer used in many foods. Some people have an alle...

A: Answer is below

Q: Given the table of bond dissociation energies above (in kl/mol), estimate the energy change for the ...

A: Concept : Enthalpy  The overall energy can be calculated by substracting the enthalpy of the product...

Q: 1. Calculate the amount of heat that must be absorbed by 10.0 gram of ice at -20C to convert it to l...

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Q: Determine the type (I = ionic, M = molecular/covalent, binary acid = BA, oxyacid = OA) and name or g...

A: We have to Determine the type andname or give formulas for the following molecules.,  

Q: Single Bonds Multiple Bonds H-H 432 N-H 391 149 c=C 614 H-F 565 N-N 160 |-CI 208 C=C 839 H-CI 175 49...

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Q: ct the product f

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Q: Consider two 1 L balloons at the same temperature and pressure. One balloon contains O, gas, and the...

A: Ideal Gas Law :-  PV = nRT  P is the pressure of gas  V is the volume occupied by gas n is the numbe...

Q: A 16.67gram sample of an organic compound containing C, H and O is analyzed by combustion analysis a...

A: Given, Sample of compound containing C,H and O Mass of sample = 16.67 g Mass of CO2 produced = 16.29...

Q: Two students, each made four measurements of the mass of an object. Their results are shown in the t...

A: Accuracy : this represent the result how closely to standard Value. Precision : This represent the r...

Q: A chemist prepares a solution of silver(I) nitrate (AGNO,) by measuring out 245. µmol of silver(I) n...

A: Concentration in terms of Micromole per litre... 

Q: Decytospolides A and Bare fungal natural products that are toxic to some cancer cells, In a synthesi...

A: Concept : 1) NaH is used as base for deprotonation.  2) Grignard reagent is used as nucleophile here...

Q: How would How would you Seperate A, B, and C below and they were mixed using eanipment. an extractio...

A: The answer is as follows:  

Q: A 0.18-M solution of a weak acid is 2.4% dissociated. Calculate K.. K.

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Q: nodal planes for each molecular orbital.    Hint: A nodal plane is a line through the molecule that ...

A: Electrons first filled  the space at lower energy levels then upper energy levels in chronological o...

Q: What is the atom ratio between Cand H in C2H5OH? O 2/6 O 2/5 O 1/5 O 2/1 Save for Later

A: Atomic ratio is the ratio of different atoms present in a compound. 

Q: Draw the structure of the fragments with m/z = 105 and 57 that could be seen in the mass spectrum of...

A: Concept is based on mass spectra:

Q: balanced using the smallest possible integers Li (s) + O2(g) = Li2O(s)

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Q: Which of the following is technically considered a nonpolar covalent bond? A. C – H B. O – N C. P –...

A: we can decide whether the bond is polar or nonpolar on the basis of their electronegativity. If the ...

Q: How many moles of S are in one mole of Al2(SO4)3? O 4 mol S O 3 mol S O 1 mol S O 2 mol S

A: We know that,  Number of mole = Given mass / Molar mass  Mass = Number of moles X Molar mass   

Q: For the reaction H2CO3 + H2O ↔ H3O+ + HCO3-, H3O+ is the conjugate base.

A: Conjugate acid and base pair-  The pair of substance which can be formed one another by the  gain or...

Q: Q2. Determine the following for the cobaltocene a. Total number of microstates possible. b. All the ...

A: Cobalt is in +2 oxidation state

Q: A chemist must dilute 39.5mL of 664.mM aqueous barium acetate BaC2H3O22 solution until the concen...

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Q: Calculate the degree of unsaturation. Assign the relevant peaks in the IR spectrum. Assign the peaks...

A: The structure of the following is:  

Q: solution

A: We know that, accuracy reflects how close a measurement is to a known or accepted value, while preci...

Q: Calculate the degree of unsaturation. Assign the relevant peaks in the IR spectrum. Assign the peaks...

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Q: Give the following information for the encircled element in the molecules as shown below 1) CH3CHO C...

A: A structure is given is 2-methylethoxy ethane. i.e. CH3CH(CH3)-O-CH2CH3. We have to tell about the o...

Q: XPERIMENTAL DATA he initial concentrations of SCN after dilution were calculated as part of the Prel...

A: Answer is attached below  

Q: What is the mass of one atom of I? O 2.107 x 10 22 8. O 3.443 x 1023 O 4.745 x 10-22 g O 6.641x 10-2...

A: To find mass for one atom of an element, divide the atomic mass of an element by avogadro number. It...

Q: Given the table of bond dissociation energies above (in kJ/mol), estimate the energy change for the ...

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Q: 1. Water is a polar molecule and has a very unique structure. A. What is a polar molecule? B. Draw o...

A: Here we have to define polar molecule and to show positive and negative region of water molecule. 

Q: If Johnny Joestar measured the amount of light absorbed by the analyte in a sample to determine its ...

A: There are various methods use for quantitative analysis of compound in analytical chemistry. Example...

Q: III. Problem solving. Show your computations. Answer questions briefly. A 50.0 ml juice extract is c...

A: We are given  A 50.0 mL juice extract is colorimetrically assayed using Nelson's test. One millilite...

Q: Balance the following chemical reaction and determine the coefficients of H2O and AIK(OH)4, respecti...

A: The Chemical reaction follows the law of conservation of mass. According to the law of conservation ...

Q: Give the following information for the encircled element in the molecules as shown below 7) CH:ÇHCH:...

A: Since you asked multiple questions so as per Q&A guidelines of portal I solved first three part ...

Q: The ion HSO4 can act as either an acid or a base. Which equation best describes HSO4 acting as an ac...

A: Given that in question a HSO4-. Difine a HSO4-act an acid or base.    These compounds are give a H+ ...

Q: 1pentanol + NaBr/H2SO4 -> 1-bromopentane Limiting reagent: 1-Pentanol Percent Yield: 64.5% The ty...

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Q: COOH CI NO2 Br

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Q: You want to prepare 500.0 mL of 1.000 M KNO, at 20 C, but the lab (and water) temperature is 28 "C a...

A: We have to find out how many grams of KNO3 should be dissolved at 28℃ temperature to get the below s...

Q: Calculate the molar solubility of molecular oxygen in water at 25oC. The Henry's law constant is 1.3...

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Q: 6s, 5p, 3d, 4p Rank orbitals from smallest to largest energy

A: • The given orbitals are-          6s, 5p, 3d, 4p    • We need to arrange the orbitals in increasing...

Q: A certain reaction has an equilibrium constant of 10.1 at 25oC. A ⇄ B Determine its ΔG, in kJ/mol,...

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Q: Torulene (γ-carotene) made by pea aphids is the only carotenoid known to be synthesized by an organi...

A: Given : molecular formula = C40H54 No.of ring = 1  Triple bond = 0 No. of double bond = ?

Q: Na2CO3(aq) + FeCl2(aq) -> FeCO3(s) + 2NaCl(aq) 1.) What is the total ionic equatuon for the followin...

A: In total ionic equation,all ionic compounds present in its  ionic form . But in net ionic equation, ...

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".