O CHEMICAL REACTIONS Interconverting number of atoms and mass of compound Calculate the number of magnesium atoms in a 80.0 g sample of forsterite (Mg,SiO4). Be sure your answer has a unit symbol if necessary, and round it to 3 significant digits.

Q: 7. A solution was made by mixing 50.0 mL of 0.750 M HCN with 25.0 mL of water. What is the pH of thi...

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Q: 3) 1,3-dichloro-3-methylheptane ( Cl- , Chloro branch)

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Q: Project 3 - kinetics The data below was collected with an enzyme, at a concentration of 10 nM, in th...

A: Given data:

Q: At a certain temperature, the equilibrium constant K for the following reaction is 7.4 x 10 ": N,(g)...

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Q: A scientist measures the standard enthalpy change for the following reaction to be -234.6 k) : 2502(...

A: Answer: To solve this question we have to use the relation between enthalpies of formation of reacta...

Q: A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar Sy...

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Q: Use the following calorimetrically dtermined enthalphy changes to predict the standard enthalpy chan...

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Q: What is required for a reaction to occur? O a. collisions O b. collisions with sufficient energy O c...

A: This question is related to collision theory. Collision theory is used to predict the rate of chemic...

Q: In the phosphate analysis of a wastewater sample, 30.00 mL of the original sample was taken and dilu...

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Q: Draw the following compounds: C2 epimer of Talose

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Q: 20.0 ml of 0.01 M HCl is added to    5. 6    ml  0. 10 M NaOH, the resulting pH of the solution will...

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Q: Myrcene is an essential oil and a monoterpene that can be found in cannabis, hops, bay and the South...

A: Note: As per company policy we are supposed to attempt first question only. Please repost other ques...

Q: The heat of fusion of a sample of (polyethylene oxide) (PEO) was determined by DSC and turned out to...

A: Given that, the heat of fusion of a sample of (polyethylene oxide) (PEO) was determined by DSC and t...

Q: Rank the three types of intermolecular forces by increasing strength. (#1 being the STRONGEST and #3...

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Q: Page |99 SUBATOMIC PARTICLES AND ISOTOPES Complete Symbol Atomic Mass Number of Number of Number of ...

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Q: reaction will occur, give the product(s) otherwise write no reaction. Also indicate if the reaction ...

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Q: Lets pretend for a moment that you’re now working as an analyst working for the police department. Y...

A: Test for sodium chloride.

Q: How much KBr could dissolve in 50 g of H2O at 70ºC?

A: Solution is mainly of three types:-  Unsaturated solution  Saturated solution  Supersaturated soluti...

Q: A catalyst: always decreases the rate for a reaction. O b. always increases the activation energy fo...

A: Catalyst is defined as a substance which increases the rate of reaction by decreasing the activation...

Q: A system does 435 kJ of work(w) and loses 312 kJ of heat(q) to the surroundings. What is the change ...

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: 1. Draw a mechanism for the following reactions ( Br HBr Br major CI Cl

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

Q: The concentration of barium ion in a solution is 0.010 M. What concentration of sulfate ion is requi...

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Q: Draw the molecular mass fragments for the following m/z rations. Show all the atoms (including) all ...

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Q: 14a. Acid chlorides are very reactive carboxylic acid derivatives. In part a, the acid chloride reac...

A: Acid chloride is  much more reactive. If amine group present in system, then at first amine act as n...

Q: INTERPRETATION OF PART A Calculate the energy of light (k) mol-1) for each of the colours of light e...

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Q: Determine the AG (in kl/mol) for a reaction at 267.69 K, for which K, = 1.21x1010, Report your answe...

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Q: Identify the acid and conjugate base in the ff. 2HCO3 -2 ↔️ H2CO3 + CO3 -2 PO4 -3 + H2PO4- ↔️ 2HPO4 ...

A: Given,  The acid and the conjugate base in the reactions are:                                       ...

Q: Acrolein test

A: The acrolein test is used to determine if oil or fat is present. When oil or fat is heated in the pr...

Q: Please find the mass of nitrogen dioxide contained in a 4.32 L vessel at 48 ºC and 141600 Pa.     Q...

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Q: A solution has a [OH−] = 3.4 × 10−5 M at 25 °C. What is the [H3O+] of the solution?

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Q: Draw the following compounds: C4 epimer of Tagatose

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Q: Write the expression for the equilibrium constant Kc for the following equation. 2Na2CO3(s) + 2SO2(...

A: Given :- 2Na2CO3(s) + 2SO2(g) + O2(g) ↔ 2Fe(s) + 2Na2SO4(s) + 2CO2(g)  To write :- Expression of Kc ...

Q: For the reaction shown below, 901 mg of 4-chlorophenol, 798 mg of benzyl bromide, and excess sodium ...

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Q: If a reaction will occur, give the product(s) otherwise write no reaction. Also indicate if the reac...

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Q: NMR spectra (Figures a, b, c and d) of four isomers are shown. with formula Cl0HuOr Their infrared s...

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Q: If the proportion of particles with energy is greater than activation energy, the reaction will O a....

A: Given statement is :  If the proportion of particles with energy is greater than activation energy, ...

Q: The pOH of an aqueous solution of 0.552 M ammonia is .

A: pOH is defined as negative logarithm of hydroxyl ions.

Q: Which of the following is an element?  Group of answer choices CO2 S8 CO KClO2

A: Given substances: CO2 S8 CO KClO2 We have to find the element.  

Q: The equilibrium constant, Kc, for the reaction below is 0.362 at 100°C. 2NO2(g) ↔ N2O4(g) What is ...

A: Given :-  2NO2(g) ↔ N2O4(g)  ; Kc = 0.362  To be calculated :-  Value of Kc for N2O4(g) ↔ 2NO2(g)   

Q: 4. Classify each of the following reactions as one of these four types: • spontaneous at all tempera...

A: The solution is as follows:  

Q: I need help solving this question please What would happen to the values you calculated for Kc in th...

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Q: Label these from most acidic (1) to least (5)

A:   Proton (H+) donars are acidic in nature  Acidity of phenols and carboxylic acid s  can be explain...

Q: Treatment of a 0.3500-g sample of impure potassium chloride with an excess of AgNO, resulted in the ...

A: Here, potassium chloride is limiting reagent....

Q: What is the molar mass for each of the following compounds? 1. Na,CO; Fe(CIO;); How many molecules a...

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Q: Given equation : Ag^+ + Br^- --> AgBr + e 1. what is the standard cell potential at 298k, given the ...

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Q: Instruction: Using the given molar mass, Calculate the mass-mole and number of entities of the given...

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Q: Fill in the blank: For irreversible SECOND-order Bimolecular type reactions, the plot of 1/Ca or Xa/...

A: In a chemical reaction, the conversion of reactants to product takes place based on the interaction ...

Q: When 2.72 mol H2 and 1.56 mol CO are put into a 2.00 L container at 160.°C, the following reaction o...

A: Kp is equilibrium constant in terms of partial pressure.  Kp is the ratio of partial pressure of pro...

Q: 3. In the background troposphere (photostationary state), the concentration of O, is 50 pptv when NO...

A: The equilibrium reaction for the photostationary state is represented as: NO2⇔NO+O3

Q: For a conductivity experiment a student mixed 25 mL of a .2 M HNO2 (4.5 x 10^-4) with 25 mL of a .2M...

A: Answer: This is a question based on salt hydrolysis where nitrite ion will hydrolyze in its aqueous ...

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.