Calculate the percent composition of each compound. show solution please answer all Calcium acetate Magnesium hydroxide Hydrogen cyanide

Q: Calculate the molar mass of each substance. (show solution) H3PO4 CaCO3 (NH4)2SO4 C4H9O2

A: Molar mass means the masses of all the atoms in the moleculeadded together.

Q: Which colligative property of solutions listed below is correctly stated? 1. The freezing point of a…

A: we need to identify the true statements based on colligative properties of solutions

Q: For an ideal monatomic gas, the following is true. (Use the following as necessary: T, U, and V.) T

A: To answer step 4.

Q: Chemistry please neat writing! 13.28 Pick an appropriate solvent(s) from table to dissolve each of…

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Q: If the volume of a gas doubles while the temperature decreases to a quarter of its original value,…

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Q: Which of these molecules would have a linear molecular shape? (Select all that apply.) O CS₂ XeCl₂…

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Q: 1. Zn | Zn²+ (1.0 M) || Cu²+(1.0 M) | Cu 2. Zn | Zn²+ (1.0 M) || Cu²+ (0.1 M) | Cu 3. Zn | Zn²+ (0.1…

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Q: NH₂ SDS, NaHCO H₂O

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Q: A chemical reaction is shown: 2NO(g) + O₂(g) → 2NO₂(g). How many liters of pure oxygen gas, measured…

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Q: Chemistry the two sugars are aldo/keto hexos/pentos that has been ciclised to a fur/pyr anose. They…

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Q: how do you know if your equivalence point corresponds to the ph you obtain at the endpoint of a…

A: It is the endpoint of titration which is indicated by some form of indicator generally endpoints…

Q: A 93.6 g sample of ground water is found to have a lead concentration of 15.65 ppm. Calculate the…

A: Given : Mass of sample = 93.6 g Concentration of lead = 15.65ppm

Q: Draw a dipeptide of lysine

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Q: 1% mol Pd(OAc)2 4% mol Ph3P B с A CH3CN (1 ring) (2 rings) (3 rings) The above reaction involves two…

A: Heck reaction involves the coupling of alkyl/aryl halide with alkene in presence of base and…

Q: Chemistry Gaseous methane CH4 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide…

A: Given, Gaseous methane (CH4) reacts with gaseous oxygen gas (O2) to produce gaseous carbon dioxide…

Q: Calculate the volume or moles of each of the following gases at STP: show solution 0.44 mol C2H6 7.6…

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Q: Molecular Shape Practice For each of the following: 1.) Draw the Lewis structure. 2.) Make sure the…

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Q: In which substance is hydrogen bonding an important intermolecular force? H butyl alcohol H dimethyl…

A: In this question we have to tell which substance contain intermolecular hydrogen bonding.

Q: For a reaction of the form X²+ -0.50 V. If the concentration be needed to have E = -0.58 V. Your…

A: Given-> X2+(aq) + Y2(s) ------> X(s) + 2Y+(aq) E°cell = -0.50 V Ecell = -0.58 V [X2+] = 0.580…

Q: QUESTION 13 When [H*] = 1.0x10-6 M at 25°C, then O A. pH = -2.00. O B. pH = 2.00. O C. pH = -6.00. O…

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Q: What is the diffusion coefficient of a membrane-bound protein of molar mass 79,300 daltons at 37°C…

A: The exact solution is given below

Q: Question 25 From the change in internal energy, AE, given for 40 °C, calculate the change in…

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Q: 7. Sketch each titration curve on the same graph. Label the half-equivalence and equivalence points…

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

Q: "ps. 5. Which property of colloidal solution is independent of charge on the colloidal particles?…

A: Given, Colloidal solution is independent of charge on the colloidal particles, which property is-

Q: Specify the degree of unsaturation (index of hydrogen deficiency) of the following formulas: (a)…

A: DBE = C - H/2-N/2+1. C = no of carbon atoms, H = no of hydrogen atoms and halogen atoms. N = no of…

Q: For the following reactions, identify the reducing agent, oxidizing agent, what is reduced, and what…

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

Q: Which of the following represents the reaction of the weak base, CH3COO", in water? O CH3COO + H₂O =…

A: The reaction that represents the reaction of the weak bas, CH3COO- in water is

Q: Hydrogen peroxide, H₂O₂, has a density of 1.45 g/cm³ and decomposes spontaneously but slowly. The…

A: Given that,  Density of H2O2 solution = 1.45 g/cm3 = 1.45 g/mL  [* 1 cm3 = 1 mL ]  The steps for…

Q: Calculate the cell potential for the galvanic cell in which the reaction. Ti(s) + Cu²+ (aq) Ti²+…

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Q: Determine the pressure exerted by hydrogen bromide (HBr) gas having a density of 2.978 g/L at a…

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Q: What is the importance about water having a high heat of vaporization? O A. a large amount of heat…

A: Given: To identify the importance of water having a high heat of vaporization.

Q: A 22.6 mL sample of 0.318 M dimethylamine, (CH3)2NH, is titrated with 0.265 M hydrobromic acid.…

A: First we would write a reaction between given compounds . Then using moles of each compound , we…

Q: Select all of the following reactions that would be expected to provide a positive change in…

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Q: 10) Classify the bonds of the following compounds as polar or non-polar. a) CH b) CO₂ c) NF,

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

Q: Consider the following half-reactions: (1) The strongest oxidizing agent is: (2) The weakest…

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Q: Draw two resonance structures of POCI 3. Assign formal charges and circle the best resonance…

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Q: Pd2+ + Cd2+ Cd (s) +Pd4+ E cell +0.323 V What is the potential of this cell reaction at 298 K when…

A: Given : [Pd2+] = 0.150M  [Pd4+] =2 x 10-3M  [Cd2+] = 0.200M  E0cell = 0.323M

Q: synthesize m form of aspirin from benzene

A: synthesize  of aspirin from benzene is given below

Q: Calculate the solubility at 25 °C of BaCrO4 in pure water and in a 0.0080M BaCl₂ solution. You'll…

A: In this question we have to tell the solubility of BaCrO4.

Q: Calculate the cell potential for the galvanic cell in which the reaction   Ti(s)+Co2+(aq)↽−−⇀…

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Q: What is the definition of a solution? What is the definition of solubility? Which one of these…

A: Since you have posted multiple questions as per guidelines we can answer only one . If you want…

Q: Select all of the following hat are appropriate an enzyme. It increases the rate constant (k) for a…

A: In this question, we have to choose the appropriate options for an enzyme.

Q: The pH of 0.125 M Na2X is 11.15 and the pH of 0.125 M H₂X is 2.55. Calculate pKai and pKaz for H₂X.

A: Given: pH of 0.125 M Na2X = 11.15  And pH of 0.125 M H2X = 2.55

Q: This experiment concerns kinetics and isotopes. Isotopes are atoms of an element that differ only in…

A: Radioactivity : It is the decay process by which atomic nuclei undergoes nuclear changes by loss of…

Q: Consider the following 2 Cr** (aq) + Ni (s)- which of the following statements are correct? Choose…

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Q: H 1.NH(Et)2, H* 2. O 3. proton source J . f 1. 2.H3O+

A: Reaction 1 : Eneamine generation. 2. Michaeld addition. 3. Imine hydrolysis. Reaction 2 : Eneamine…

Q: Calculate AGran in kJ, at 298K for the following reaction using the conditions given below. R =…

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Q: _) Which one of the following statements is incorrect about enzyme catalysis? (a) Enzymes are mostly…

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Q: The Michaelis-Menton constant is best thought of as ... both a rate constant and an equilibrium…

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Q: Krypton-81 has a half-life of 2.29 × 105 years. A 750-mg sample of Krypton-81 undergoes electron…

A: Since you have posted a question with multiple sub-parts as per our company guidelines we are…

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.