A rectangular piece of platinum has dimensions of 3.50 cm x 2.16 cm x 1.08 cm and weighs 175.5 g. What is the density of platinum?

Q: What NaCl concentration results when 289 mL of a 0.710 M NaCl solution is mixed with 627 mL of a…

A: Given, There are two NaCl solution: I) First NaCl solution  Concentration of the NaCl solution =…

Q: STOICHIOMETRY IN BALANCED EQUATION Answer the following below. Show your solutions.…

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Q: Describe how you would prepare 950 ml (final volumn) of a solution that is 0.125% phenolphthalein by…

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Q: Select the stronger acid: ņ H equally acidic

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Q: In the molecule shown label the indicated bonds with either their hybridization (sp,sp2,sp3) or the…

A: Hybridization is the mixing and recasting of atomic orbitals of the same energy and symmetry to form…

Q: What is procedures in extraction of lycopene from watermelon.

A: Lycopene from watermelon can be extracted as follows:

Q: NOCICH ste 2. 140 OPSA

A:

Q: Anhydrous, primary standard sodium thiosulfate can be prepared from the pentahydrate, Na2S2O3.5H2O.…

A: Answer: Molar concentration of solute in solution is: Molarity=Mass of solute×1000Molar mass of…

Q: Consider the following system at equilibrium where Kc = 55.6 and AH° = -10.4 kJ/mol at 698 K. H₂ (g)…

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Q: The electrodes in the following electrochemical cell are connected to a voltmeter as shown. The…

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Q: What is specific objectives in extraction of lycopene from watermelon.

A: Lycopene from watermelon can be extracted as follows:

Q: Correlate experimental bond strengths and bond distances with the number of valence electrons,…

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Q: observered wavelength 651 nm - Red 483 nm - Blue 432 nm - Violet • From your data and the Rydberg…

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Q: Me. EtO₂C CO₂Et Me NaOEt EtO₂C Me

A:

Q: Why are alcohols usually bad electrophiles? You must support your answer with data on the…

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Q: How did you get the Ksp value of every Cation?

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Q: RNA is a biological molecule that translates the genetic information in DNA into protein synthesis.…

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Q: Q3: Distinguish by the mention of one detector between the compounds with giving the cause and the…

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Q: 71.289, -6/f The volumetric pipet is labeled 10.00+ 0.02 ml Trial 1: Unknown volume (ml) The volume…

A: Here is your answer......

Q: Calculate the number of moles of HF that must be present in 500 mL of solution to give a pH of 3.5.…

A:

Q: Classify the following quantities if extensive or intensive property: 4 a.) Temperature b.) Mass c.)…

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Q: 1. For the reaction: H2 +Cl2 ----->  2HCl, 3.7 moles of H2 are mixed with excess HCl. How many moles…

A: 1. For the reaction: H2 +Cl2 ----->  2HCl, 3.7 moles of H2 are mixed with excess HCl. How many…

Q: . A box is 252.50 cm wide, 18.25 cm tall and 6.50 cm deep. Calculate the volume of the box in…

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Q: Area Of Field Health And Medicine Food And Agriculture Consumer Product Some Chemical Components…

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Q: Consider the following system at equilibrium where Kc = 9.52x CH4 (9) + CCl4 (9) — 2 CH₂Cl₂ (g) The…

A:

Q: For each reaction below, identify the acid and the base нсон -о-н н CI CI-Sn-Cl -5 ći н- НӨ Н Н…

A: According to the Arrhenius theory, the substance that gives hydrogen ion H+ in the aqueous solution…

Q: Chemistry Give the IUPAC name for the following metal complex: [Fe(H2O)4Cl2] The answer is not…

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Q: EtO₂C .CO₂Et Br CHO NaOEt EtO₂C EtO₂C CHO

A: Here we have to synthesize  the following given  target compound  from the given starting material…

Q: Write the rate law for the following elementary reaction: 2 NO(g) + O₂(g) → 2 NO₂(g) Use k₁ to stand…

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Q: Give the product(s) formed when the following species react together: Interactive 3D display mode…

A: If acidic proton present then first of all base NH2- can abstract most acidic proton .

Q: Draw an “energy level diagram” for a calcium (Ca) atom.

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Q: For a solution that is 0.164 M NH3 and 0.102 M NH4Cl, calculate the [OH-].  NOTE: You may enter a…

A: Given,  [NH3] = 0.164 M  [NH4Cl] = 0.102 M  Calculate the [OH-] = ?  Use Henderson-Hasselbalch…

Q: The weight in grams of NaOH can be computed if the number of moles and the molar mass are given. O…

A: Using mole concept easily determines how much mole , molecular weight is used or formed in any…

Q: 'H-NMR exercises A. Number of signals, integration, and multiplicity 1. Determine the number of…

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Q: Two unknowns, X and Y, both having the molecular formula C4 H, O, give the following results with…

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Q: 3. olumlu sham Me Ph Ph Ph H NaOEt Ph

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Q: The value of ΔG° for the conversion of dihydroxyacetone phosphate to glyceraldehyde-3-phosphate…

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Q: Question 3. In an experiment for the determination of the heat of proton ionization of an organic…

A: The balanced equation for the dissociation of acetic acid, CH3COOH(aq) is: CH3COOH(aq) ⇌ CH3COO-(aq)…

Q: What can I determine in portable NIR? How can I determine the authenticity of my samples in portable…

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Q: Draw the structural formula of the following compounds. 3-methyl -1- pentyne 2,3,4-chloro octane

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Q: 5. Lance obtains a silvery metallic unknown. He weighs the metal and finds that he has 60.55g. When…

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Q: 1.04 km to cm

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Q: Write the equilibrium constant for this reaction in terms of the equilibrium constants, K₁ and K2,…

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Q: In a continuous fibre reinforced composite where the fibres are well aligned, the strength in the…

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Q: Weak acid and the conjugate of that weak acid, can be the components of a buffer system.  True

A: Buffer solution is solution which resist pH change by addition of small amount of Strong Acid/Base.…

Q: - A method for the analysis of a metal ion (M2+) in water from the duck pond at Tech suffers from…

A: Given: Analysis of  metal ion M2+ in water Interfering ion= N+2 Concentration of M2+  = 100 times…

Q: At a temperature of 312 K, ? moles of an ideal gas occupy 572.9 mL at 726.6 mm Hg. Write your answer…

A: Given, Note: 760 mmHg = 1 atm Pressure (P) = 726.6 mmHg = 0.956 atm Volume (V) = 572.9 mL = 0.5729 L…

Q: H₂O (g) + CO (g) = H₂ (g) + CO₂ (g) K = 0.036 If 0.564 M of H₂ and CO2 are introduced into a…

A:

Q: What is the s character of sp3 carbon

A: During orbital hybridization, the mixing of atomic orbitals takes place to form new orbitals known…

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.