Using the arithmetic problem below, determine the correct number of significant figures. (1.5 × 10–4 × 61.3) + 2.01

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Q: 7. P2S4 diphosphorus tetrasulfide valence e = REDS at each central atom = shape at each central atom...

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Q: Question 7 The AG'rxn for the reaction: N2(g) + 02(9) + 2 NO(g) is +173 kJ/mol at 25 °C. What is the...

A: The relation between standard Gibbs energy change for standard condition and equilibrium constant is...

Q: What is the shape of OXEF4

A: A molecule is given is XeOF4. We have to tell its shape. We know that hybridization is  H = Number o...

Q: The molarity of a solution prepared by diluting 43.72 mL of 1.005 M aqueous K2Cr2O7 to 500 mL is ___...

A: Before Dilution: M1 = 1.005 M V1 = 43.72 mL   After Dilution: M2 V2 =  500 mL   Using Dilution prin...

Q: Be sure to answer all parts. Cinnamic alcohol is used mainly in perfumery, particularly in soaps and...

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Q: Based on the phase diagram below: a. Describe what one would see at pressures and temperatures above...

A: Phase diagram: The phase diagram represents the different phases of the substance and the pressure a...

Q: Draw Lewis electron dot diagram of compound CO2 to determine the molecular polarity by drawing the p...

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Q: Consider the reaction: N2O4(g)  2 NO2(g). What is ΔS° at 25 °C?      ΔHf°, kJ mol-1 ΔGf°, kJ mol...

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Q: What is the cell potential for the following reaction at 25 °C? Ni(s) + Cu2+(0.010 M) – Ni2+(0.0010 ...

A: Concept : A cell is formed by combination of two half cell reactions.  Two reactions are carried out...

Q: Determine the concentration of 7.13 g zinc nitrate (MW = 189.4 g/mol) dissolved in 200.0 mL distille...

A: Molarity is defined as the number of moles of solute dissolved per litre of solution.

Q: A sample of that contains 200 molecules contains carbon atoms. A 22.5-g sample of ammonium carbonate...

A: Since you have posted multiple questions as per guidelines we can solve only one per session . Since...

Q: Consider the reaction: N204(g) 2 NO2(g). What is AS° at 25 °C? AHf, KJ mol-1 AGf, kJ mol-1 NO2 33.85...

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Q: A soultion is 5.00% by mass potassium sulfate. How many grams of this solution would be needed to su...

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Q: 5. Water flowing through a garden hose of diameter 2.74 cm fills a 25.0-L bucket in 1.50 min. a. Wha...

A: Diameter = 2.74 cm  Volume = 25.0L Time = 1.50 min

Q: Materials and detailed methods:  paragraph or two explain how the experiment was done  Raw Data: W...

A: Diels -Alder reaction takes place in reactions between conjugated diene and an alkene. In this react...

Q: 7. What is the equation for this overall reaction? a) 2A + 2C -> 2E +F b) 2A + B+ 2C -> 2E + F c) 2A...

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Q: E, = kJ - mol- What is the value of the pre-exponential factor (sometimes called the frequency facto...

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Q: Which of the following pairs is correctly matched? A. beaker: measures volume of liquids B. spatula:...

A: In chemistry laboratory different types of equipments are used. Every equipment have it's own use.  ...

Q: In aqueous solution, iodine reacts with acetone as represented by the following equation: 12(aq) + C...

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Q: The cell notation for the Galvanic cell is The Standard Reduction Potential are as follows: E°ca2*/c...

A: formula used E°cell = E°cathode -E° anode  

Q: I. Directions: Draw the lewis structures of the neutral atom and the ion of each element. Determine ...

A: Lewis structure is the representation of molecules or atoms with valance electron

Q: Which of the following changes will affect the rate constant of a reaction 1. Increasing or decreasi...

A: The rate constant is affected by  1) increasing or decreasing the reaction temperature

Q: Which of the following statement/s is/are TRUE? I. The Arrhenius Theory cannot be applied to account...

A: The answer is given below

Q: -1 3) The IR absorption at 1630 cm belongs to (a) CH;-C=N )CH>-CH=CHICH, (c) CH2=CH-CH=CH-CH2 (d) H-...

A: The correct option are: Note: as per company policy we are supposed to answer first three questions ...

Q: Which of the following is/are true concerning a chemical reaction at equilibrium? 1. The system will...

A: Reversible reaction: The chemical reaction in which the products can react to reform the reactants. ...

Q: At 100°c and 2 bar pressure, the degree of dissociation of phosgene is 6.30 x 105. Calculate the equ...

A: The reaction given is, => Given: Degree of dissociation = 6.30 × 10-5  Temperature = 100 oC And ...

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

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Q: at a certain temperature this reaction follows second-order kinetics with a rate constant of 47.7 M ...

A: Reaction:- 2HI ------> H2 + I2 

Q: calculate the concentration of the unknown KMnO4 solution in ppm

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Q: If a reaction is zero-order in a reactant, when the concentration of the reactant is decreased by a ...

A: Given that, Reaction is zero order, Then,  

Q: Write the pressure equilibrium constant expression for this reaction.

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Q: 24) Identify the type of Organic compound shown 애

A: In the given structure carbon atom is bonded to oxygen atom by a double bond and a hydroxyl group (-...

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A: The cell given is Cd(s) | Cd2+ || I2 (s) | I-.  

Q: Take some water with a straw and put a few drops on plastic sheet. Put a small amount of one of the ...

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Q: While not true in general, many aqueous reactions approximately double their rate for an increase in...

A: Answer: Arrhenius equation can be used to calculate the activation energy. 

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A: Concentration acids are highly dangerous and can cause damage to skin when in contact.

Q: please solve for part a & b .. im really lost and don’t know how to go about it , thank you!

A: We have to find out the ∆H,∆S and Tb, Tf  for the following reaction .,  

Q: Which reaction is more energetically favored, one with ΔG0 = - 44 kJ/mol or one with ΔG0 = + 44 kJ/m...

A: The spontaneity of a reaction can be found out by the change in Gibbs free energy of the reaction. I...

Q: -1490 wing molecule, iustrale the molecuia I (M*) first and then cations (M-N) and

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Q: A sample of NH4HS (s) is placed in a 2.00 L container at 25oC. (a) Calculate the total pressure in t...

A:                                   NH4HS (s)     ⇔      NH3 (g)    +   H2S (g)At t=0                 ...

Q: At 2000 °C, N2(g) + O2(g) + 2 NO(g); Kc = 4.10 x 10-4 What is Kp for this reaction? 7.75 O 2.17 x 10...

A: For the reaction., N2(g) + O2(g) -----> 2NO(g)  Temperature = 2000°C  Kc = 4.10 × 10-4 We have to...

Q: The acid H2CO3 decomposes to some extent in water to produce CO2  gas. What should you expect to obs...

A: The answer is as follows:  

Q: Molecular Formula:C,H1,0, EOU: IR (cm-1): ?? bond 2951 bond 2500 - 3460 bond, 1602 bond 1715 1H NMR ...

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Q: The production of an ether from an alkyl halide. O nucleophilic substitution reaction O radical subs...

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Q: Which of the following statement/s is/are TRUE?  The Arrhenius Theory cannot be applied to account ...

A: 1) statement 1 is correct beacuse Arrhenius Theory explain the variation of molar conductivity of we...

Q: Put some water in cup. Sprinkle black pepper all over the surface. What does the pepper do? Tell you...

A: Polar molecules dissolve in polar solvents whereas non polar molecules dissolve in non polar solvent...

Q: Metal ligand bonds tend to be weak and often are observed to vibrate below 600cm-1. Can you foresee ...

A: Metal ligand bonds tend to be weak and often are observed to vibrate below 600cm-1.  

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.