9. Vanillin, the dominant flavoring in vanilla, contains C, H, and O. When 1.05 g of this substance is completely combusted, 2.43 g of CO2 and 0.50 g of H2O are produced. What is the empirical formula of vanillin?

Q: If temperature increases, what happens to the kinetic energy and number of collisions in a chemical ...

A:

Q: Draw the product of the following reaction, indicating the correct stereochemistry. Ili CH,OH H,SO, ...

A:

Q: .N. 25°C

A: Mechanism of Reaction 1 - 

Q: Consider the following reaction: X_Y + Z >2X + D, The proposed mechanism of this reaction is below: ...

A:

Q: View Policies Current Attempt in Progress Consider the reaction, CH3CI(g) + 3Cl2lg) →CCI4(3) + 3HCI(...

A:

Q: What is the concentration of Ben in the solution ?     366 mM     468 mM     393 mM     497 ...

A: As per Beer-Lambert's law:

Q: Calculate the activity of La3+ in a saturated solution of La(IO3)3. Ksp =  1.0 x 10-11 1.7 x 10-4 ...

A:

Q: II в D Which part in the figure can be a grating or prism? O A

A: Prism or grating is used in an experiment for dispersion and controlling the direction of light with...

Q: What is the chemical formula for ferric ferrocyanide? Please explain how you got the answer

A: In Ferric ferrocyanide there is a presence of Fe3+  and [Fe(CN)6]4- ions. The possible formula writt...

Q: Name the given compounds. For uniformity's sake, name all the branched substituent as if naming an a...

A:

Q: What property of water refers to water's ability to form a thin film on the surface of lakes and pon...

A: What property of water refers to water's ability to form a thin film on the surface of lakes and pon...

Q: The standard addition method is used to analyze a sample of a river water for mercury. Solution A is...

A: IR spectroscopy is used to identify functional groups of unknown compound.  

Q: consider the following reaction with an activation energy of 12.10 kJ/mol and a rate constant of 9.0...

A:

Q: What is the most proper major product for this reaction scheme? 2. 2. 1. 2CH,MgBr, THF 2. H D O A

A: Acid chlorides react with two equivalent of Grignard reagents to produce tertiary alcohols. Because ...

Q: If a city water supply has a limit of 250 ppm of nitrate ion, what is the maximum amount of nitrate ...

A: ppm means the parts of the solute that are present in a million parts of the solution (parts per mil...

Q: It uses flame to atomize samples to detect traces of metals. Atomic Absorption Plasma Emission O UV-...

A: Atomic Absorption:  The technique uses basically the principal that free atom(gas) generated in an a...

Q: 1. 5-chloro-4-cyanopentanoic acid 2. 3-isopropyl-6-oxohept-3-enal 3. 3-(cyclobutylmethyl)cyclohexan-...

A:

Q: Calculate e values for the galvanic cells based on the following overall reactions. Assume that all ...

A: Given reactions are : (a). Cr3+ (aq) + Cl2 (g) <--------------> Cr2O72- (aq) + Cl- (aq)   (b)....

Q: A solution containing 0.584 mole/L of Cuso4 and had a 0.510 absorbance reading in a 1.0cm cell at 52...

A:

Q: A sample of 1.00 mol of perfect gas molecules with Cp = 7/2 R is put through the following cycle: (...

A:

Q: An environmental engineer analyzes a sample of air contaminated with sulfur dioxide. To a 500.-mL sa...

A: Answer: By the use of stoichiometry, we will calculate the number of moles of SO2 and then by the us...

Q: A solution of 0.10 M Sulfate ion is available. What is the normality of this solution when used in t...

A:

Q: How do you define chemistry?

A: How do you define chemistry ? 

Q: Systematic naming

A:

Q: If 25 grams of methane, CH 4, and 30 g of ammonia, NH 3, are combined w/ excess oxygen, when the rea...

A:

Q: Is my answer correct? Is it okay to put the hydrogen in the back for the fourth carbon despite it be...

A:

Q: • Part A The specific rate constant for the first-order decomposition of N2O5 (g) to NO2(9) and Oz(9...

A:

Q: What is the linearity (r2) value of the following concentration and absorbance values: SAMPLE |CONCE...

A: given

Q: 7. If the atmosphere is 25 degC and 1.2 atm and contains 0.79 mole fractions of N2, 10$ mole fractio...

A:

Q: Consider the given liquid-vapor diagram:   What is the estimated boiling point of pure component B...

A: (A) Estimated boiling point of pure component = 372 K Mole fraction of A versus temperature plot is ...

Q: Some measurements of the initial rate of a certain reaction are given in the table below. N2| |H2 in...

A:

Q: 1. Write structural formulas for the following compounds: а. 2-chlorobutane b. 2,3-dimethylbutane 1,...

A: Answer: Structural formula is a way of representing a molecule in a way where all the atoms have bee...

Q: Calculate [HgCI4^2-] in a solution prepared by adding 0.0200 mol of NaCI to 0.250 L of a 0.100-M HgC...

A: Answer: In any reaction limiting reagent is the reactant which gets exhausted first decide the yield...

Q: Common Name Chemical Formula Systematic Name Battery acid      Plaster of Paris     Grain alcohol   ...

A:

Q: Which one of the following compounds is consistent with the following IR spectrum? so00 eoos 1000 HA...

A:

Q: If 382.2 mL of a 4.42 M solution of NaOH is diluted to a total volume of 857.6 mL, what is the conce...

A: Here we have to calculate -1.concentration of new solution,2. amount of oxy gen required and3. volum...

Q: II C Which part in the figure can be a deuterium lamp? A ם O O

A: Deuterium lamp is used as a source of light in various spectroscopy techniques.

Q: 1. Which of the following is the longest bond? 2. Which of the following bonds has the lowest BDE? 3...

A: In this compund there are bond between two carbon. Bonds are may be single bond or double bond or tr...

Q: Why was n-octanol chosen as a surrogate for natural organic phases? Why not another solvent such as ...

A: A question based on introduction to organic chemistry that is to be accomplished.

Q: liters of a 5% w/v boric acid so should be used to obtain the boric acid needed in preparing 1 liter...

A:

Q: A mixture of CO2 and Kr weighs 37.6 g and exerts a pressure of 0.855 atm in its container. Since Kr ...

A:

Q: Methanol (CH3OH) burns in air according to the equation 2CH;OH + 30, → 2CO, + 4H,O If 229 g of metha...

A:

Q: The purpose of adding sodium sulfate in the extraction is to decrease the solubility of caffeine in ...

A: Solvent extraction or liquid-liquid extraction: The separation of compounds which are miscible in re...

Q: 2. Give the balanced molecular equation for the reaction of HCl solution with Ca(OH)2 solid.

A: HCl react with Ca(OH)2 formed CaCl2 and H2O that is HCl(aq)+Ca(OH)2(s)----->CaCl2(aq)+H2O(l) thi...

Q: 3. Calculate the molarity, molality, and mole fraction of NH3 for a solution of 30,0g NH, in 70.0g H...

A: The molar mass of NH₃ = 17g The molar mass of H₂O = 18g No of moles in 30.0g NH3:- = 30.0/17 = 1.76 ...

Q: (Q92) Which of the following statements regarding bimolecular elementary reactions is false? O They ...

A:

Q: What is the mass of 2.2 x 10 ° CO 2 molecules? O a. 1.0 x 10-12 g O b.1.6 x 10-13 g O. 12x 106 g O d...

A:

Q: Name the given compounds. For uniformity's sake, name all the branched substituent as if naming an a...

A: A question based on nomenclature that is to be accomplished.

Q: Some measurements of the initial rate of a certain reaction are given in the table below. N2 H2 init...

A:

Q: What is the difference between a transition state and an intermediate?

A: We have to write the difference between the transition state and the intermediate. Intermediate: It...

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.