You put a pot of water on the stove and the water begins to boil. What is the system? What is the surrounding? What is the direction of energy transfer? Is it endo or exothermic?

Q: 4.22 Name the following alkynes, and predict the products of their reaction with (i) H2 in the prese...

A: A question based on alkynes that is to be accomplished.

Q: 1. Silver has two naturally occurring isotopes with the following isotopic masses: 107 107 47 Ar 106...

A: Answer: To solve this question we have to use the relation between average atomic mass and % abundan...

Q: A. Classify the following molecules as polar or non-polar (write below the chemical formula in the f...

A: When a bond is formed between atoms of different electronegativities, bond is polar in nature.

Q: Fill in the blanks of the following reaction scheme using any reasonable starting materials and reag...

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Q: Which of the following options has the correct sequence of elements in increasing electron affinity ...

A: The electron affinity is defined as the ease of accepting the electron. The energy will be liberated...

Q: 5. Using sodium as example sketch the following: simple cubic lattice (sc) a. b. body-centered cubic...

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Q: What kind or type of isomer is the compound given below categorized?

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Q: An impure sample of zinc (Zn) is treated with an excess of sulfuric acid (H,SO,) to form zinc sulfat...

A: Since  you have posted multiple subparts, we will solve first three subparts for you. To get solve t...

Q: For a 0.222 m aqueous solution of sucrose, C12H22O11, What is the boiling point?  kb = 0.512˚C/m

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Q: 1. 2-chlorobutane 2. 1-butyne

A: 1. 2-chorobutane ----> 1-butanol   2. 1- butyne --------> 1- butanol  

Q: R5 1. Calculate the pH of a 0.0205M trifloroacetic acid solution.

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Q: 4.53 What monomer unit might be used to prepare the following polymer? CH3 CH3 CH3 CH3 CH3 ý CH,.CH,...

A: A monomer is a type of molecule that has the ability to chemically bond with other molecules in a lo...

Q: What is the number of o bonds and ä bonds in one molecule of this compound?

A: Between the atoms single bonds consider as a Sigma bond and in double bond there is a one Sigma bond...

Q: 1. Classify the type of intermolecular interaction between the following molecules? Briefly explain ...

A: The answer is as follows:  

Q: Question 42 The disaccharide shown is composed of two units of D-glucose joined with a B (1->6) link...

A: True; The disaccharide shown here does have beta(1->6) glycosidic linkage

Q: uestion 21 What are the components of the buffer solution when 0.20 mol H3PO4 is mixed with 0.30 mol...

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Q: What do you call the type of analytical method that relies on the absolute stoichiometric equivalenc...

A: Oxidative method - It a method involving transfer of electrons from oxidizing agent to the substance...

Q: Which acid-base titration would yield a titration curve of the general form shown? H3PO4 titrated wi...

A: Acid-base titration: The titration is used to determine the concentration of unknown acid or base by...

Q: Compare the following set of molecules in terms of the properties indicated in each item. Explain yo...

A: Intermolecular spacing and intermolecular force of attraction existing between the individual molecu...

Q: 8 g of potassium chloride is dissolved in a quart of distilled water. Calculate the pH value of the ...

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Q: Salicylic acid reacts with acetic anhydride to form aspirin, acetylsalicylic acid.  If the percent y...

A: Given, Salicylic acid reacts with acetic anhydride to form aspirin Percent yield of the reaction = 7...

Q: An aqueous solution of calcium hydroxide is standardized by titration with a 0.110 M solution of per...

A: Given, Concentration of perchloric acid = 0.110 M Volume of base = 24.7 mL Volume of acid = 27.3 mL ...

Q: Which one of the following molecular formulas is also an empirical formula? C,H,0, A) C,H,SO В) H,O,...

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Q: s polar or non-polar

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Q: mole fraction

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Q: A. Classify the following molecules as polar or non-polar (write below the chemical formula in the f...

A: The number of electron pairs around the central atom decides its electron geometry. If the number of...

Q: what is compound C

A: In first step give positive test of carbohydrate by treatment with Alpha-naphthanol/H2SO4. Now perfo...

Q: (a) In the cubic crystal structures, as the values of the Miller indices (h, k, and 1) increase, doe...

A: Miller indices are group of three values (hkl) that indicates the set of parallel planes of atoms in...

Q: A 50 ml aqueous sample containing 0.015 M amine (Ka = 3.16 x 10-9) was adjusted to pH 9.0 and then e...

A: Liquid - liquid extraction

Q: A0.001 m solution of a weak electrolyte ionizes into 4 ions freezes at-0.06C What is the apparent de...

A: Given,  Molality of the weak electrolyte = m = 0.001 m Number of ions given by weak electrolyte = n ...

Q: A cold pack is an example of an reaction and works by A hot pack is an example of an reaction and wo...

A: A hot pack and cold pack are example of what and what reaction work by hot pack and cold given below...

Q: Describe the differences between between eukaryotic from prokaryotic cell

A: Prokaryotic cell is (bacteria)... Eukaryotic cell is (plants, fungii)...

Q: A neutral atom has the following electron configuration: 1s25°2p° What is the chemical symbol for th...

A: Electronic configuration  is given         1s22s22p5 The total number of electron is 5+2+2= 9 electr...

Q: what is the volume of a gas at 750mmHg if it exerted pressure of 650mmHg at 700mL? Assuming that the...

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Q: () There are 7 crystal systems, 2 of them are predominant in metals, which are the two?

A: There are seven crystal systems- 1) Cubic 2) Tetragonal 3) Orthorhombic 4) Hexagonal 5) Rhombohedral...

Q: What kind or type of isomers are the compounds given below? Arrange them in the order of increasing ...

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Q: Question 25 Salivary amylase is used to hydrolyzed a(1à4) glycosidic bonds in carbohydrates. O True ...

A: 1st option is correct that is true.  Reason : Salivary amylase is a digestive enzyme that helps in t...

Q: What is the concentration of an aqueous HI solution that has a pH of 2.26?     1.82 x 10-2 M     ...

A: Given that, pH = 2.26  Then, [HI] = ?

Q: I need help with these three question please Which of the following is a Brønsted-Lowery base? A) CH...

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Q: Question 18 What is the pH of the solution given the following information? Methyl orange = yellow M...

A: Given : Methyl orange = yellow Methyl red=yellow Bromothymol blue = green

Q: 23A 0.20 g sample of primary standard Na2C204 (134 g/mol) needed 37.22 mL of of KMNO4 solution to re...

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Q: Hi! Can you help me with these?  Assignment: Balance these problems and find the percentage of it. ...

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Q: Which structure is the correct Haworth representation of a-D-glucopyranosyl-(1–3)-B-D-galactopyranos...

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Q: 7. Why the need for a homogenizer?

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

Q: Based from the nitrogen test experiment, what is the test for nitrogen?

A: Analytical chemistry is branch of chemistry in which we deal with detection of element in organic co...

Q: When propene reacts with gaseous hydrogen bromide, HBr, two products, 1-bromopropane and 2-bromoprop...

A: Alkene gives an electrophilic addition reaction with hydrogen halide to form an alkyl halide.

Q: A juice concentrate was colorimetrically assayed using Nelson's test. One milliliter (1.00 mL) of th...

A: To determine the reducing sugar concentration (mg/mL) in the juice concentration.   

Q: 15 Valence electrons in a neutral atom are attracted by protons in the nucleus. a. The nucleus of wh...

A: Answer: Valence electrons are the electrons those are present in the outermost shell of the atom.

Q: Match the pair of monosaccharides that exhibit the type of isomerism being described per item. Enant...

A: To match the pair of monosaccharides with the isomerism they exhibit.  

Q: Practice Problems: Pressure Complete the following tables. Use the chart in your notes to help you P...

A: