Determine the change in the internal energy of a system if 5.5 x 107 kJ of heat is removed from it and if 2.5 x 107 J of work was done on it.

Q: . What is the use of benedicts test? 2. What are the reagents/chemicals used during the test? 3. Wha...

A: When Benedict's reagent combined with reducing sugar a brick red precipitate formed which indicates ...

Q: Complete the following nuclear equation by identifying X. (Enter the complete nuclear equation.)   ...

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Q: calculate the neutralization equivalent for malonic acid and maleic acid

A: For an acid, neutralization equivalent is determined as- Neutralization Equivalent = Molecular Weigh...

Q: Fill in the gaps in the following table: Symbol P3- Protons 35 49 Neutrons 45 66 118 Electrons 46 76...

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Q: What is the [A-]/[HA] ratio when the weak acid is in a solution one pH unit above its pKa? 1:1 1:10 ...

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The buffe...

Q: Which radical will not likely be formed? Take note of the asterisk as the point of radical formation...

A: Here the radical in option 6 can't be formed as because this is cyclic structure and the carbon in t...

Q: What is the IUPAC name of this spectrum

A: IUPAC name have some specific rule

Q: Fill in the gaps in the following table: Symbol Co Protons 34 76 80 Neutrons 46 116 120 Electrons 36...

A: In an atom, the atomic number must be equal to the number of protons. 

Q: Is the name correct? 5-(2,2-dimethylethyl)nonane If not, give the correct name.

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Q: Write the empirical formulas of the following compounds C2N2 NazS204 K2Cr2O7 C6H6

A: Empirical formula is defined as the simplest reduced whole number ratio of atoms present in a compou...

Q: Consider the data showing the initial rate for the reaction CH3CI(g) + 3 Cl2(g)→CCI4(g) + 3 HCI(g) a...

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Q: Which element is the most metallic? F Au Fr Li   What helps particles move?  Kinetic Molecular So...

A: First group elements are most metallic character.  so lithium (Li) is correct option.              K...

Q: RANKING: Knowing the effects of intermolecular forces on the boiling points of substances, rank the ...

A: Boiling point is the temperature at which liquid converts into vapour phase.  Greater is the intermo...

Q: CH3 CH2 CH3 (с) (а) (b) PPH

A: Concept IUPAC nomenclature; 1) According to IUPAC nomenclature system longest chain is selected whic...

Q: -SMez (AuC(Sma] R. CI.

A: The given reaction is from synthesis of gold complexes using Sulphur based complexes. The products a...

Q: The phase diagram of a pure substance is given below. Which of the following statements is true abou...

A: Given is the phase diagram and point B is the triple point.  The zone shown in pink colour is solid ...

Q: If 1 pound = 2.205kg, how many grams is in 4.95 pounds? Report your answers to 2 decimal places with...

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Q: A. Fluoromethane B. Methanol C. Chloromethane D. Water 1. Which molecule has the highest dipole mome...

A: 1)Chloromethane has higher dipole moment because dipole moment depend on both charge and distance . ...

Q: What is the purpose of NaOH and 3% H2O2 in the separation of aluminum, iron (3+) and chromium ? Why...

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

Q: O CHEMICAL REACTIONS Anniston V Theoretical yield of chemical reactions OD 2/5 Gaseous butane (CH,(C...

A: Given that -  Mass of butane, CH3(CH2)2CH3 = 1.7 g  Mass of oxygen gas, O2 = 3.3 g    The balanced C...

Q: The gas-phase reaction X(g) +Y(g) -> XY(g) has an overall energy change of +45 kJ. The activation en...

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Q: Aqueous hydrochloric acid (HC1) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium ...

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Q: Write the formulas for the following compounds:

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Q: For the following gas-phase reaction, indicate mathematically how the rate of disappearance of each ...

A: 2N2O ----> 2N2 + O2

Q: 1,3-Diaxial interaction is mainly torsional strain. Select the correct response: True False

A: In the conformation if the two atoms is in eclipsed conformation then torsional strain arrises maxim...

Q: Cyclohexane derivatives exist primarily in the most stable of the available chair conformations. Giv...

A: Explanation - A conformation in which both substituents are equatorial will always be more stable t...

Q: Draw the expected major product for sequence MCPBA

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Q: Ethane

A: We have to propose a synthesis from ethane to butan-2-one. The required synthesis is shown below  

Q: 2. In HPLC analysis, why Would peak area is preferred to peak height in evaluating the caffeine conc...

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

Q: Question 14 Blank 1 is called the universal solvent because of its capability to dissolve more subst...

A: (Q14) Water is known as universal solvent. It is because of its ability to dissolve more substances ...

Q: Which radical will not likely be formed? Take note of the asterisk as the point of radical formation...

A:   Alkanes :  Alkanes are saturated hydrocarbons , these are  less reactive compounds , hence alkane...

Q: Is the name correct? 5-(2,2-dimethylethyl)nonane If hot, give the correct name.

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Q: 2. Expand the following bond-line representati ons to show all the atoms inclu ding C and H, (a) (6)...

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Q: NaOH NaCIO3 NaC2H302 Са(ОН)2 BaSO4 ZNCO3 AIPO4 AgNO3

A: polyatomic ions ions that are made up of two or more atoms

Q: Valine has pKa's of 2.286 and 9.719. Estimate the fractional composition of Valine in the -1 form at...

A: Amino acids are amphoteric in nature due to the presence their ionizable α-amino and α-carboxylic ac...

Q: Determine the rate of formation of I3− if the initial concentration of I− was 0.5583 M and decreased...

A: The balanced reaction taking place is given as, => 3I−(aq)+ S2O82−(aq) ↔ I3−(aq) + 2SO42−(aq) Giv...

Q: de plant extract. Approximately 19.00 mL of water was added to the plant extract. To determine the p...

A: The conc. of the BSA in mg/L,

Q: Sighting along the appropriate C-C bond of neopentane C(CH3)4: a) Draw its Newman projections. b) Ho...

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Q: Could you simply explain how to alter the solubility of organic bases using extraction? How do you a...

A: Here we have to explain how solubility of organic base and acid change with during extraction.

Q: Predict what would happen to the amount of CO2(g) when the equilibrium is disrupted by:     Decre...

A: The reaction given is, => NH4NH2CO2 (s) → NH3 (g) + CO2 (g)                ΔH > 0  

Q: A buffer contains 0.025 mol of lactic acid (pK, = 3.86) and 0.080 mol of sodium lactate per liter. H...

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Q: How many grams of ethylene are needed to react with 0.124  mol of H2O?

A: Here we have to calculate the mass of ethylene needed to react with 0.124 mol H2O.

Q: Rotation around a single bond gives rise to isomers in alicyclic alkanes. Select the correct respons...

A: Isomer are pair of compound which although have same molecular formula but different structural form...

Q: From these observations Are alkali metals or alkali earth matal more reactive?

A: As per the guideline, since you have asked multiple questions, we have solved the first question for...

Q: The equilibrium constant for 2C 3A + B is K = 0.1 Determine the equilibrium constant for 9A + 3B 6C ...

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Q: C3H8 + 5 O2 →  3 CO2 + 4 H2O        a)  If I start with 5 grams of C3H8, what is my theoretical yi...

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Q: Actual vapor pressure in the air in mmHG if relative humidity is 40% and temperature is 37.5⁰ C

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Q: Ticls, k H2, Pdle CH3 Pooduch

A: In presence of TiCl3, McMurray coupling is occurred.  Followed by reduction of alkene .  

Q: An atom with more electrons than protons is a negative ion. True or False

A: Please find your solution below : An atom is defined as the basic building block of matter.  It cons...

Q: Rank the gasses from highest to lowest global warming potential. (1 being the highest, 4 being the l...

A: Due to global warming, the temperature of our earth increases day by day.