grams

Q: An alloy contains 78.7% zinc by mass. If a sample has a total mass of 230 grams, how many grams of…

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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: Express (91 g) / (49 g) as a percentage with correct significant figures SHOW WORK BELOW!

A: We need to determine the percentage of given expression.

Q: The following information is given for bismuth at 1 atm: T 1627.00°C Tm = 271.00°C Specific heat…

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Q: Question 1 concentrations: A water sample has a pH of 7.0 and the following ion Molarity (M) 0.1 0.1…

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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: In an experiment, 3.250 g of NH3 reacted with 3.50 g of O₂. Supposed that the reaction produced 2.13…

A: We have given that  In an experiment 3.250 g of NH3 reacted with 3.50 g of O2 Supposed that the…

Q: Tag all the sp³ hybridized carbon atoms in this molecule. If there are none, please check the box…

A: SP3 hybridization arises by the mixing  of one 2s-orbital and three 2p-orbitals to form four hybrid…

Q: TⒸ Solved Synthesis of benzilic aciet from benzil bab, repart include discussion of result and…

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Q: 'H NMR spectrum (300 MHz, in CDCI) (quartet, H) 4 80 0 ppm "C NMR spectrum (75 MHz in CDC13) 0 ppm…

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Q: Identify the molecularity of each elementary reaction in the table below. elementary reaction O₂(g)…

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Q: 2.51 Rank the compounds in each group in order of increasing acidity. a. b. C. OH CI CI NH2 OH OH SH…

A: Acidity of a compound means how easily a compound release hydrogen ions. Organic compounds are the…

Q: + 2,4-Dinitrophenylhydrazine ->?

A: Ammonia or ammonia derivative reacts with carbonyl compounds to give addition products.

Q: how does 31.6 * 0.57 = 18.1? when doing the math im getting 18.012. is there a step im forgetting?…

A: 48.7 g of dichloromethane has 31.6 KJ/mol enthalpy of vaporization ∆H°vap .We have to calculate…

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

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Q: 1. Given the following chromatogram, mark the middle of each cation spot and calculate the Ry value…

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Q: 1. How many grams of water are produced from 100 grams of oxygen?

A: Note: As per the guidelines, solution of first question has been made. For the expert solution of…

Q: How many moles of NH3 do you have in a 1000 ml of a 1 M solution?

A: Molarity is a concentration term for a solution. The molarity of the given solution is defined as…

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…

Q: What is the pH of a solution containing 7.41 x 10-2 hydroxyl ions?

A: The hydroxyl ion concentration [OH-] = 7.41 x 10-2 M Now, pOH = -log[OH-] = - log 7.41 x 10-2…

Q: In a solution of acetone and water, the mole fraction of water is 0.212. If the vapor pressure of…

A: Given: In a solution of acetone and water, the mole fraction of water = 0.212 The vapor pressure of…

Q: 27) For the structure below the number of proton NMR signals is (A) 2 (B) 3 (C)5 (D) 6 (E) 4 Br H на…

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Q: How many Si atoms are there in a 63.4 gram sample of elemental Si? atoms

A: Given the mass of the Si sample = 63.4 g  We have to find the number of Si atoms.  We can proceed…

Q: Translate the given theoretical conformer from the Newman projection to its wedge‑and‑dash drawing.

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Q: Tungsten is a rare metal found naturally on earth almost exclusively combined with other elements in…

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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: For the molecules below use formal charge to identify the specific atom(s) which hold indicated…

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Q: What is the connection of HOMO LUMO and pi to pi* include reference website link for my further…

A: When two atomic orbitals of comparable energy are combined with each other it forms molecular…

Q: B. Give a reasonable synthesis pathway for the transformation below. You may use any organic and…

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Q: la) Biliverdin is a pigment produced by tree frogs that causes them to look green - its structure in…

A: Given the pKa values of the two ionizable groups are: pKa1 = 3.9, and pKa2 = 5.3

Q: What is procedure in extraction of beta-carotene from carrot.

A: Extraction is a technique which is used to  a substance from a mixture. It is the first step to…

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: Moles to Grams Convert the following from moles to grams. Show your solution. The molecular weight…

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Q: Show all  computations  and  express final answer in  sig  fig  and  scientific  notation.  Box  out…

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Q: How many atoms of mercury are required to produce 3.49 L of H, gas (density= 0.0899 g) according to…

A: Given, 2 Hg(l) + 2 HNO3(aq) ----> Hg2(NO3)2(aq) + H2(g) Volume of the hydrogen (H2) gas = 3.49 L…

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

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

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

A: Rate law :-  The rate of reaction is directly proportional to molar concentration of reactant raised…

Q: The ideal gas constant R is: R = 8.314 J / K*mol What is the value of R expressed in units of L…

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Q: Problem 36 Which is a stronger acid? Why? 0 CH3 O-H or CH3-S-O-H

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

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Q: he NMR singlet at 83. gnals at 8177

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Q: The archeologist collected a sample for testing and learned that the carbon-14 activity was found to…

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Q: Draw reasonable resonance structures for each structure below, using curved arrows to indicate…

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Q: 9. HO OH cat. H₂SO4 ∞

A: Carbonyl compounds reacts with diols in the presence of a acidic catalyst to form a cyclic product…

Q: ogen pept is rigid, take place about the N-Co and the Co-C bonds in a protein (Co is the a carbon…

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Q: 2. In part IIA, you calculate the density of a cube using a ruler and a digital caliper to measure…

A: A. Using rular and digital caliper to the side of cube, digital caliper gives highly precise value…

Q: A patient is to be given 4.6 mg of a heart medication in exactly 260 mL of D5W (dextrose solution)…

A: Volumetric measurements

Q: 10. Match up the compounds on the left below with the solvent which would best dissolve it (on the…

A: Given compounds - 1) Indane 2) Hexane-1,2,3,4,5,6-hexol 3) 1,3-dichlorobenzene 4) NaCl Given…

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: What is general idea in extraction of beta-carotene from carrot.

A: We have to write the general idea in extraction of beta-carotene from carrot.

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.