Osmium is the densest element known. Convert its density of 22.57 g/cm³ to lb/gal.

Q: Where can I know the spectral properties of my sample? UV vis spectro, fluorescence spectro,…

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Q: 1. Moles to Grams Convert the following from moles to grams. Write your solution and answer in the…

A: A compound is made up of molecules of same type. For example : NaCl compound has Avagadro's number…

Q: How much heat (in kJ) is required to raise the temperature of 72.0 g of water from 35°C to 103°C of…

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Q: A chemist measured the concentration of a solution three times and obtained the following results…

A: Accuracy and precision are two important terms as far as measurement is concerned. Accuracy means…

Q: Step 4. Place remaining electrons on the central atom. If the structure is already correct, or no…

A: Examine the structure & if it is not correct draw a correct structure.

Q: A chemical engineer is studying the rate of this reaction. 2NH3(g) → N₂(g) + 3H₂(g) - She fills a…

A: •Here graph is given for Concentration NH3 V/s time. •Concentration=>x-axis •Time=>y-axis…

Q: Consider the reaction of ozone with hydrazine: 2 03(g) + 3 N₂H4(g) of 0.52 mol/s, what is the rate…

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Q: 1. If 23.6 grams of nitrogen are mixed with 17.3 g of hydrogen, how much ammonia may form?

A: Given :-  Mass of Nitrogen, N2 = 23.6 g  Mass of Hydrogen, H2 = 17.3 g  Mass of Ammonia, NH3 = ?…

Q: NOCICH ste 2. 140 OPSA

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

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Q: Me & & Me cat. NaOEt EtOH Me &

A: This is Robinson annulation reaction. NaOEt act as base and EtOH is solvent.

Q: Calculate the approximate number of atoms in a bacterium, assuming the average mass of an atom is…

A: Given,  Average mass of an atom is 10 times the mass of hydrogen atom Calculate the approximate…

Q: mg A patient being treated for a serious infection is to receive an IV infusion of 3 gentamicin over…

A: #1: The required dose of gentamicin = 3 mg/Kg for over 60 min  Body weight of the patient = 88.0 Kg…

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

A: a.) ∆V can be calculated using the initial and final volume of graduated cylinder . b.) Density can…

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: Draw a picture of a proton transfer reaction including curved arrows

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Q: When 131. g of benzamide C7H7NO are dissolved in 1300. g of a certain mystery liquid X, the freezing…

A: Answer: Depression in freezing point of a solution containing non-volatile solute is:…

Q: :0:

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Q: NEW August 17, 2020. Which of the following pairs is paired wroly? A a. Volumetric methods are…

A: From the statement we can tell that which paired wrongly.

Q: A common reference electrode consists of a silver wire coated with AgCl(s) and immersed in 1 M KCl…

A: The answer to the following question is-

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

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Q: What is the formula for the nitrite ion ? What is the name for CIO™ ? ion

A: 1. Nitrite ion has the chemical formula of NO-2 this ion is majorly used in pharmaceutical…

Q: A group of students completed an experiment to determine the effect of temperature on the solubility…

A: The graph can be made using the given data values using Excel.

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

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Q: For the compound below, locate the pattern we just learned (lone pair next to a n bond) and draw the…

A: Resonance structure: If the Lewis structure of a molecule or ion cannot explain by a single…

Q: 2. Calculate the density of an irregularly shaped solid if its mass is 50.2 g and its volume is 5.0…

A: Given,       Mass of solid = 50.2 g       Volume of solid = 5.0 ml       Density of solid = ?

Q: Problem 3: A compound with molecular formula MW (CsH100=86). The infrared spectrum shows a strong,…

A: IR spectroscopy is used to determine the functional groups present in the sample. Different…

Q: are substances that release hydrogen ions.   Question 3 options:   a)  Basic substances   b)…

A: In solutions, basic substances release hydroxide (OH- )ions.  Neutral substances have equal amount…

Q: 25. Which of the following choices is an example on anthropogenic complexing agents: A) Humic and…

A: Anthropogenic Complexing agents improve cleaning efficiency by inactivating water hardness.

Q: . How can the water displacement method be used to measure solid? the density of tan…

A: To measure the density of a solid , we need its mass and volume .

Q: Now that you have the contribution from the X-19 isotope (2.715) and from the X-21 isotope (18.00),…

A: Given the contribution from the X-19 isotope = 2.715 amu contribution from the X-21 isotope = 18.00…

Q: What is the s character of sp3 carbon

A: When one s orbital and three p orbitals ( px , py , and pz orbitals ) of the valance shell of the…

Q: Two flasks are connected with a stopcock.Flask #1 has a volume of 2.5L  and contains oxygen gas at…

A: Suppose two different containers contain gases, and they are separated by a valve.  The resulting…

Q: 8. For the following reactions, determine the value of “x”. a. 4C + S8 = 4CS2 3.2 mol S8 yields x…

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Q: What is meant by the first compound notation?

A: In chemistry, a compound - is a substance that is made up of two & more diverse chemical…

Q: Calcium crystallizes in a face centred cubic struture. The edge length of its unit cell is 558.8pm…

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Q: عالم من Me Me Me cat. H₂SO4 benzene Me Me

A: Here we have to write the mechanism of the following given reaction.  The product  can be obtained…

Q: If the pOH of a solution is equal to 9.33, the pH of the solution is equal to 3.39. O True O False

A: Given  pOH of the solution = 9.33

Q: 1- When 10ml of glucose and 20ml of I2 titrate with 0.1 NaS203, the volume appears 5ml, and when the…

A: Given in following question give some data 10 ml of glucose and 20 ml I2 titration with 0.1 Na2S2O3…

Q: Consider the following system at equilibrium where Kc = 0.159 and AH° = -111 kJ/mol at 723 K. N₂ (g)…

A: We would use Le-Chatelier's principle to determine the answers.

Q: 12. N OH -Me H2O, HCI HO OH -Me

A: In this question, we will draw the reaction mechanism in the presence of acid water.  Acid water…

Q: 543.7 g + 568.45627 mL

A: Addition of two quantities can only be done if they have the same units.

Q: In Example 2-1, we established that the mass ratio of magnesium to magnesium oxide is 0.455 g…

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Q: b Complete the following table for an isotopically-labelled atom or ion: Group of Element Group 2A…

A: To complete the following table for an isotopically-labelled atom or ion.

Q: A cylinder of helium has volume of 600 cm^3? The cylinder contains 200 g of helium at a temperature…

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Q: 7. The rate constant for the hydrolysis of a m-chloro substituted and p-methoxy substituted organic…

A: Given  Rate Constant (km  ) of m- chloro = 0.50 Rate Constant( kp  ) of p-methoxy = 0.015 σ for m-Cl…

Q: 6. Which row in the table is INCORRECT? (a) (b) (c) (d) (e) Symbol 79Se2 P 107 Ag+ 55Mn SV 130-…

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Q: There are three sets of sketches below, showing the same pure molecular compound (carbon monoxide,…

A: For carbon monoxide(CO), the melting point is - 205. oC and the boiling point is - 192. oC.  Hence…

Q: Decide whether each proposed multiplication or division of measurements is possible. If it is…

A: This question is related to units of measurement. We need to predict the given mathematical…

Q: MeCN n-BuLi; Et₂C=O Me OH Xan CN Me

A: n-BuLi act as base and deprotonate from CH3CN to form -CH2CN which act as nucleophile attack to…

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.