How many significant figures does the difference 218.7201 – 218.63 contain?

Q: GENERAL CHEMISTRY 2 (STEM Fay M. Lafable GI Name: Clyme lified True or False Cons: Write CHEMISTRY i...

A: The third postulate of KMT is-

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A: Boiling point:The temperature at which the vapor pressure of a liquid becomes equal to the atmospher...

Q: Question 14 Which of the following pairs is incorrectly matched? A microbalance : +/- 1X 10-4 g B mi...

A: The correct option is:  

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Q: The standard cell potential for the reaction at 298.15 K: Fe (s) + Zn2+ (aq) ⇋ Fe2+ (aq) + Zn (s) ...

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Q: (SPM10-29] Which equations represent double decomposition reactions that form a precipitate? Na So. ...

A: Given reactions are : I. CuSO4 + Na2CO3 -------> CuCO3 + Na2SO4  II. CuSO4 + Mg(NO3)2 ------->...

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Q: an attempt to measure the effects of acid rain, researchers measured the pH (7 is neutral and values...

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

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Q: The ΔG°rxn for the reaction: N2(g) + O2(g)  2 NO(g) is +173 kJ/mol at 25 °C.  What is the equilibri...

A: Complete solution is given below in next step   

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: 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: 37. What will be the major product of the reaction of 1 mol of propyne with each of the following re...

A: We are authorised to solve first three subparts of a question. Please post the rest of the sub parts...

Q: Consider the reaction: BaSO4    Ba2+ + SO42-; Ksp = 1.1 x 10-10 What is ΔG° at 25 °C?     57 kJ/m...

A: Given Data :  1. Ksp = 1.1×10-10  2 . Temperature = 25oC                             = (25+273)K    ...

Q: In a first-order reaction, the half-life is 137 minutes. What is the rate constant? O 1.22 x 10-4 s-...

A: The rate constant and half life of first order reaction is related as follows - Half-life = 0.693/k

Q: n biological systems, an ACTIVE transport process is one in which an important chemical component is...

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

Q: Given the dissociation constants for each deprotonation, what is the dissociation constant for the o...

A: Overall reaction dissociation constant is the multiplication of two dissociation constants of indivi...

Q: The molar conductivity at infinite dilution of hydrobromic acid, sodium acetate, & sodium bromide at...

A: Molar conductivity at infinite dilution of :  Hydrobromic acid (HBr) = 520.1 S cm2 mol-1 Sodium acet...

Q: Question 47 How many grams of CuCl2 (MW = 134.45 g/mol) is needed to prepare 100.0 mL of 0.2418 M Cu...

A: The correct option would be:  

Q: Yana uses 16.4 liters of helium to blow up a balloon for a party. If the room is at STP, how many mo...

A: Volume of Helium = 16.4 Litres Given condition is STP :- At STP :- Temperature = 0°c = 273.15 K Pres...

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

A: Lewis dot structure of the molecule is drawn assuming that the molecule is covalent molecule. Here s...

Q: At 400 K, an equilibrium mixture of H2, 12, and HI consists of 0.065 mol H2, 0.079 mol 12, and 0.13 ...

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Q: 1. SOCI2 2. Et,CuLi 3. (a) LİAIH4 (b) H2O OH

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Q: 15) Which one of the compounds corresponds to this IR spectrum. NH2 1000 2000 3000 4D00

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Q: The cell notation for the Galvanic cell is Cd(s)/Cd2+//I2(s)/I- The Standard Reductio...

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Q: Of the following list of five compounds, select ALL that will form a KETONE as the major substrate p...

A: The answer is as follows:  

Q: Using the necessary inorganic reagents, propose the synthesis for 2,5-diphenylfuran from benzene and...

A: Here we to synthesize 2,5-diphenylfuran from starting material benzene and succinic acid.

Q: How many grams of CuCl2 (MW = 134.45 g/mol) is needed to prepare 100.0 mL of 0.2418 M CuCl2?

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Q: What are all the ionic and molecular species present in a 0.001 - M aqueous solution of C6H4OH(CO2H)...

A: The answer is as follows:  

Q: What is the purpose of the salt bridge in an electrochemical cell? To maintain electroneutrality To ...

A: Given : We have to tell the purpose of salt bridge in an electrochemical cell.

Q: Which of the following is the correct sequence of weighing using an analytical balance? I. Press Tar...

A: The steps given are,  

Q: If 92.8 g of sodium nitrite is dissolved in sufficient water to prepare 2.3 L of solution, the resul...

A: Definition: Molarity is a concentration term for a solution. The molarity of a given solution is def...

Q: Use these bonds and atoms to do the following: 1. Construct a model of methane. Write down its dash ...

A: Since you have asked multiple questions, we will answer the first one for you. To get the remaining ...

Q: Another experiment requires you to take 25.0g of zinc chloride and add it to 175.0mL of water?  What...

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Q: Methanol (CH3OH) burns in air according to the equation 2CH3OH + 302 2CO2 + 4H20 If 189 g of methano...

A: Given : Mass of methanol = 189g

Q: the fluid mosaic cell membrane model, lipids are organized in a __________  arrangement, such that _...

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Q: step(s). The SN2 reaction of chloroethane with NaC=CH has 3. O 1

A: Bimolecular nucleophilic substitution reaction (SN2): In this reaction the addition of the nucleophi...

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: Write the pressure equilibrium constant expression for this reaction.

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Q: Indicate the strongest force holding the crystals together in the following substances by putting a ...

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Q: Consider the reaction: BaSO4    Ba2+ + SO42-; Ksp = 1.1 x 10-10 What is ΔG° at 25 °C?     9.3 kJ/...

A: ★ Answer : Correct option is 57 KJ/mol         BaSO4  →   Ba2+ + SO4- Ksp = 1.1 × 10-10 For sparing ...

Q: For the reaction of the ammonium ion with nitrous acid, the net reaction is NH4*(aq) + HNO2(aq) → N2...

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Q: At 100°C and 2 bar pressure, the degree of dissociation of phosgene is 6.30 x 10-0. Calculate the eq...

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Q: Identify the reaction type ) 2K t Brz>2KB. 9) 2 NaHCO3 > Na z COzt coz tH )Na t Hz0 > Hz + 2Na OL, H...

A:                       Answer Identify the types of reaction

Q: At 2000 °C, N2(g) + O2(g) - 2 NO(g); Kc = 4.10 x 104 What is Kp for this reaction?

A: The relationship between Kp and Kc is given by the relation ;   Kp = Kc (RT)∆ng. ∆ng = stoichiometry...

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: Which alkyl halide will form.the most stable carbocation? Br Br Br II II IV Multiple Choice II IV

A: A carbocation is an ion with a positively charged carbon atom.

Q: Identify the IUPAC Name of the following compounds.

A: Given compound: (1)  The numbering of the main carbon chain can be done as follows:

Q: what mass of copper (ii) nitrate is prevent in 50.00mL of a 4.55x10-3 M aqueous solution

A:

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.