What is the density of a 789 kg object that is 1.58 m³ in size? number unit

Q: What is the osmotic pressure of a solution prepared by adding 12.5 g of sucrose (C12H22O11) to enoug...

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as...

Q: and Kb for a conjugate acid-base pair in aqueous solution? Ka / K * b = KW Ka + Kb - KW = 1.0 Ka ...

A: For conjugate acid-base pair, For acid, dissociation constant = Ka For base, dissociation constant =...

Q: A solution is made with 554 ml of 8.21 M HX solution and 549 mL of 6.06 M Nax solution and the pH at...

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Q: -3800 eso 600 400 3200 -750 3000 700 2800 450 -2600 400 Sample C 2400 550 -2200 500 -2000 450 1800 1...

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Q: The following data were obtained for the osmotic pressures of the nitrocellulose in acetone at 20 °C...

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

Q: (b) When NH3 is added to aqueous CuSO4, the complex [Cu(OH2)2(NH3)4]*+ is ultimately formed. Initial...

A: When NH3 is added to aqueous CuSO4, the complex [Cu(OH)2(NH3 )4]2+ is ultimately formed. Initially, ...

Q: the section in your e Text. Part B Identify the equilibrium-constant expressions for the following r...

A:

Q: 2. A solution that may contain Cu, Bi", Sn*, or Sb2* is treated with thioacetamide in an acidic medi...

A: 1)A solution that may contain Cu2+, Bi2+, Sn4+, or Sb2+ is treated with thioacetamide in an acidic m...

Q: 2. Circle all the compounds below that will racemize when treated with a weak acid or base. Explain ...

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Q: 1. A balloon has a volume of 5.0 L when at sea level (1.0 atm) at a room temperature of 24 oC. What ...

A: Boyle's law states that for a fixed mass of gas (n) at constant temperature (T), the volume (V) is i...

Q: 4. A saturated solution of Magnesium hydroxide at 298 K contains 1.71 x 10-4 mol/L Mg2+ ions. Calcul...

A: Given :  [Mg+2] = 1.71 x 10-4 mol/L  Volume of Mg(OH)2 solution = 500 ml  Volume of NaOH solution = ...

Q: How much concentrated 18 M sulfuric acid is needed to prepare 250ml of a 6.0 M solution?

A: Dilution of the solution: When we dilute a concentrated solution with pure water, the mole of solute...

Q: how molecular spectroscopy works? what are its advantage and disadvantages

A: Spectroscopy is based on the interaction between light and matter.

Q: Oxalic acid is a diprotic acid that occurs naturally in some plants. Calculate the pH and the concen...

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Q: Question/Problem: What is the % composition of potassium chlorate (KCIO,) in a mixture of potassium ...

A: The percent composition can be calculated as shown below. Percent composition=Mmass of simpler eleme...

Q: EXAMPLE 2. FOR THE D. STATE OF THE ELECT RONN CALCULATE THE 5/2 POSSIRLE VALUES OF J, AND THE DIFFRE...

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Q: The critical constants of carbon dioxide are Pc = 72.85 atm, Vc = 94.0 cm3 mol–1, and Tc = 304.2 K. ...

A: "a" and "b" constants are known as van der Waals parameters of the gas.

Q: e equilibrium-constant expressic reactionr

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Q: Li-crystal is structured bcC with side length a = 3.49. a). Find the distance between the planes wit...

A: Note - As you have posted two different questions simultaneously , but as per Bartley guidelines I c...

Q: 2. A solution that may contain Cu, Bi?", Sn*, or Sb* is treated with thioacetamide in an acidic medi...

A: 2. subjective examination Dark encourage halfway disintegrated in basic medium : could be Cu2+ Stayi...

Q: Choose the best answer. What are the factors that need to be considered in HPLC to ensure the two an...

A: Introduction :  HPLC  means High pressure liquid chromatography it is used to find out the drug quan...

Q: Na2Cr207 () CH2-CH2-OH H2SO4

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Q: Correct 1. Calculate the amounts of each reactant. 2. Compare the ratio of reactants amounts to the ...

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Q: Assessment one F Direction: In a long 1. Find the mo 2. What is the

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Q: 6. Why do we need to precipitate from a hot solution? 7. Why is the precipitating agent added all at...

A: Since you have posted multiple questions, the answer for first two question is given below. Kindly r...

Q: Balance the reaction, do not leave any fractions, don't leave anything blank, then answer the questi...

A: Given,  Balance the reaction, do not leave any fractions, don't leave anything blank, then answer th...

Q: Calculate the molarity and the molality of an NH3 solution made up of 30.0 g of NH3 in 70.0 g of wat...

A: Given, Mass of ammonia (NH3) = 30.0 g Mass of water (H2O) = 70.0 g  Density of the solution = 0.982 ...

Q: Differentiate molecular spectra and atomic spectra

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Q: ) The percentual weight (w/w) of Carbon in Ca(HCO3)2. ) The amount of substance of 120g of Calcium C...

A: a) The percentual weight (w/w) of Carbon in Ca(HCO3)2. b) The amount of substance of 120g of Calcium...

Q: What is the bond order of N2

A: Here, we have to calculate the bond order of N2.  

Q: Directions: Answer the questions below in relation to the following generic diagram. 1.0 C A 0.5 45°...

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Q: The deep blue compound Cu(NH3)4SO4 is made by the reaction of copper(II) sulfate and ammonia. CuSO (...

A: Given: Mass of CuSO4 (limiting reagent) = 47.0 g Actual yield of Cu(NH3)4SO4 = 53.4 g Known: Molar m...

Q: 8. Write the product of the reaction in three dimensions and indicate if the methyl groups in the pr...

A: As per guidelines we have to solve only the First question. We have to determine the stereochemistry...

Q: 0.80 g of sodium hydroxide (NaOHNaOH) pellets are dissolved in water to make 7.0 L of solution. What...

A: mass of NaOH= 0.80 grams molar mass of NaOH = 40.0grams number of moles = 0.80/40 = 0.02 moles

Q: Ammonia gas can be prepared by the following reaction: CaO(s) + 2 NH4C1(s) →2 NH3(g) + H2O(g) + CaCl...

A: Given data,Mass of CaO=480gMass of NH4Cl=960gTheoretical yield of NH3=291gActual yield of NH3=147g

Q: 1. Explain why the behavior of H2 (positive deviation) is different from the behavior of CH4 and NH3...

A: Given,  And 

Q: What is the balanced chemical equation for the aromatic bromination of Acetanilide using green reage...

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Q: 4. Citric acid has three Ka values, Kal = 7.4 x 10-4, Ka2 = 1.7 x 10-5, and Ka3 = 4.0 x 10-7. Write ...

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Q: Methane (CH) gas and oxygen (0,) gas react to form carbon dioxide (CO,) gas and water (H,O) vapor. S...

A: Limiting reactant can be defined as the substance that get completely consumed in the reaction and t...

Q: 7:39 None of the following reactions take place as written. What is wrong with each? (а) Br CN NaCN ...

A: A substitution reaction is a reaction where one group is substituted for another group in a single s...

Q: Determine the OH- and H+ concentration and calculate the pH, pOH of a solution that is 0.70 M NH3 so...

A: pH of a solution is a measure of acidity of a solution. pH less than 7 indicate that solution is aci...

Q: Determine A and B to complete the reaction below: CH,OH CH,OH H+ OH H,0 OH OH OH r-D-glucopyranose a...

A: This reaction involves glycosidation. Glycosidation means formation of glycoside from aldose or keto...

Q: he mass percent o

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Q: The pH of an aqueous solution of 0.176 M ammonium bromide, NH Br (aq), is This solution is

A: 1. Solution - According to the question - pH = pH stand for potential of hydrogen, since pH is effec...

Q: Be sure to answer all parts.   Given the thermochemical equation for photosynthesis,   6CO2(g) + 6H2...

A: Carbon dioxide reacts with water in the presence of sunlight to form glucose and oxygen. The equatio...

Q: Barbituric acid, HC4H3N2O3, is a weak acid that is used to prepare various barbiturate drugs (used a...

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Q: Aniline, C6H7N (molar mass = 93.13 g/mol), is a weak base that is used as a precursor in the synthes...

A: The solution is given below -

Q: p-dihydroxybenzene and o-dihydroxybenzene can be separated by TLC using a solvent of medium polarity...

A: We know that in a TLC plate if we are using the non-polar solvent then it can form bonds ( attractio...

Q: The aluminum in a 0.972 g sample of an unknown material was precipitated as aluminum hydroxide, Al(O...

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Q: er. Br N- OEt N- OE

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.