If mass of an empty 9.5 mL pycnometer is 10.6 g and the mass of the same pycnometer with an unknown liquid is 20.6 g. Determine the density of the unknown liquid to TWO DECIMAL PLACES in g/mL.

Q: 6. According to the Balmer-Rydberg equation, electromagnetic radiation with the shortest wavelength…

A: Answer:- This question is answered by using the simple concept of line spectrum using the simple…

Q: What is the balanced net equation? It's unclear on my side. I only see 2 equations

A: We have to write the balanced net equation. The given equation is MnO4- + HNO2 → Mn2+ + NO3-.

Q: NBS hv Drawing

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Q: The heat of fusion AH, of ethyl acetate (C4H8O₂) is 10.5 kJ/mol. Calculate the change in entropy AS…

A: we have to calculate the change in entropy

Q: I2 is not present among the choices for part 2 (anode). What is the correct answer?

A: The given problem is based on the values of standard reduction potential values of the species.

Q: 43. Consider the voltaic cell: Fe(s) Salt bridge containing KNO3(aq) -1 M Fe³+ 1M Cr³+ Cr(s) a.…

A: A spontaneous redox reaction which involves transfer of electron from electrode to another take…

Q: LINEZOLID (600 MG TAB, t1/2 = 7 hours) COMPUTED REACTION CONSTANT BASED ON HALF LIFE: Assuming a…

A: According to the question, The half-life for the given first-order reaction is given by = t12= 7 hrs…

Q: 1₂ (s) + 6H₂O (1) +5Cl₂ (g) → 2103 (aq) +12H+ (aq) +10Cl¯ (aq)

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Q: What is the pH of a 0.24 M solution of sodium propionate, NaC3H5O2, (base) at 25°C? (For propionic…

A:

Q: For an exothermic reaction with an enthalpy value of -10 Joules and an entropy of -5 Joules per…

A: Given that  The change in enthalpy, ∆H = -10 J The change in entropy, ∆S = -5 J/K The temperature at…

Q: 1. The number of lone pairs in CO2 molecule are A. 1 C. 3 B. 2 D. 4 2. A molecule with trigonal…

A:

Q: PbI2 has a Ksp equal to 1.4 x 10-8. A 1.0 L saturated solution of PbI2 contains a concentration of…

A: Given: Ksp of PbI2 = 1.4 x 10-8 A 1.0 L saturated solution of PbI2 contains a concentration of I- =…

Q: For the reaction M2(g) + T2(g)  2MT(g), at equilibrium, it is found that the concentrations of M2,…

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Q: H3C de OH HNO3 H₂SO4 SO3 H₂SO4 b) NH₂ B 1) HNO2 2) CUCN A Br₂ FeBr3 NH₂ -MgBr₂ OH & D & D CrO 3 A C)…

A: This is aromatic substitutions reaction.  Nitration, sulphonation and halogenation

Q: The heat of vaporization AH, of acetonitrile (CH3CN) is 29.8 kJ/mol. Calculate the change in entropy…

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Q: Determine the % of acetic acid (MM = 60.05 g/mol) in a 2.00 mL vinegar sample that has a mass of…

A: Given that, a 2.00 mL vinegar sample that has a mass of 2.10 g. A 16.36 mL of a 0.155 M NaOH…

Q: Give all possible mį values for orbitals that have each of the following values: (a) l=3 −1, 0, +1…

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Q: What is the coefficient for methane in this equation when balanced? ? CH4 + ? O2 --> ? CH3OH 02 O4 O…

A: The coefficient for methane in this equation will be 2   The balanced chemical equation will be…

Q: Hexane molecules, C6H14, undergo combustion in the presence of O₂ and are completely converted to…

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Q: In the titration of a weak monoprotic acid with a strong base, the pH of the titration solution…

A: pH is measure of acidity or basicity of a solution.If pH of solution is less than 7, then solution…

Q: 2. You dissolve 290 grams of K₂SO4 into 900 ml of water. Calculate the formula mass of K₂SO4…

A: Given that, 290 grand of K2SO4 dissolved in 900 mL of water. We have to answers the given questions.…

Q: Why do you change mmHg to atm, how does atm cancel out?

A: The relationship between △G and △G0 is △G = △G0+ 2.303 RTlog(Q) Here, R is gas constant ( 8.314…

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A:

Q: ОН

A: CIP Rule : 1. First find longest carbon containing chain. 2. Numbering from that carbon atom where…

Q: A solution is prepared by mixing 200.0 g of water, H2O, and 200.0 g of ethanol, C2H5OH. Determine…

A: Given that, a solution is prepared by mixing 200.0 g of water, H2O, and 200.0 g of ethanol, C2H5OH.…

Q: Carbon-14 has a half-life of 5730 years and the radiocarbon activity of wood recently cut down is…

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Q: Identify the value of x (mass number of Q) to complete the balanced nuclear equation for the…

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Q: CH₂CH3 NCH₂CH₂CH3 CH3CHCH₂CHCH2CH3 CH₂CH3

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Q: Which of the following combinations is not suitable for making a buffer? NH4Cl and NH3 OH3PO4 and…

A: To find out the combination which is not suitable to make buffer solution, check the combinations…

Q: What is the IUPAC name of this compound?

A: The given compund is ethoxy substituted hexane.  The IUPAC name of the compound is given below

Q: Hikers climbing Mount Everest discovered it took much longer to cook a boiled egg than it does at…

A:

Q: Which of the following pairs of species is not a conjugate acid-base pair? O H₂CO3, HCO3- O 0²-, OH-…

A:

Q: CHEM 2411 Exp12 NMR Spectress Mass Spectrum "C Spectral Data: 171ppm (s), 78,8ppm (0, 70.2ppm (1),…

A: We have find out the possible structure from given spectral data.

Q: Molecule or lon SnCl4 #valence e **NO3 #valence e 6 **PF6 #valence e 6 SbCl5 #valence e 5 **N3-…

A: Valence electrons: These are the electrons that are present in the outermost shell of an atom.…

Q: Use bond energies to calculate the heat of reaction:

A: The energy change of a chemical reaction can be calculated by using the bond energies. The energy…

Q: Consider the reaction: H₂CO(g) + O₂(g)CO₂(g) + H₂O(1) Using standard thermodynamic data at 298K,…

A: The balanced chemical equation given is H2CO (g) + O2 (g) → CO2 (g) + H2O (l) The number of moles of…

Q: A student dissolves 6.3 g of glucose (C6H₁2O6) in 400. mL of a solvent with a density of 1.03 g/mL.…

A: Answer:- This question is answered by using the simple concept of calculation of molarity and…

Q: HCO, Lewis Structure (with formal charges) Hybridization VSEPR Shape of each central atom Bond types…

A: We have to give the Lewis structure of HCO3-.

Q: Ancient Romans built often out of bricks and mortar. A key ingredient in their mortar was quicklime…

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Q: If 120 mL of a 10% stock solution is diluted to 240 mL, the final concentration of the solution is…

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Q: What mass of Mg is produced (in grams) when a constant current of 0.889 A is passed through an…

A: According to Faraday's first law of electrolysis, the amount of substance deposited at the electrode…

Q: One way in which the useful metal copper is produced is by dissolving the mineral azurite, which…

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Q: Which of the following alkynes is the strongest Lowry-Bronsted acid? Select one: O A. 1-hexyne O B.…

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Q: A mass of 0.650 grams of calcium carbonate is added to 0.01375 mole HCl. If the CO2(g) gas is…

A: Given data is The mass of calcium carbonate reacted=0.650 g  Moles of HCl taken = 0.01375 moles…

Q: An example of a molecule with two different chiral centers is 2,3-dihydroxybutanoic acid shown below…

A: 2,3-Dihydroxybutanoic acid has four stereoisomers.   The (2R,3R) and (2S,3S) stereoisomers are…

Q: What is the IUPAC name of the following substance? CH₂ HC=CCCH3 CH3

A: We need to write the IUPAC name of the given compound. The given substance contains a triple bond…

Q: Free energy is a measure of spontaneity and is dependent on the enthalpy, entropy and temperature.…

A: The information given is The entropy change of the reaction is 25 Joules per Kelvin. The heat…

Q: The U.S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: Given -->  The maximum safe density of lead in air is d = 1.5µg/m³ = 1.5 x 10-9 g/L    A total…

Q: An analytical chemist is titrating 247.8 ml. of a 0.6300M solution of nitrous acid (HNO₂) with a…

A: We have to use the Henderson-Hasselbalch equation. for that, we have to determine the final…

Q: For each of the following structures, giv (common or IUPAC). a) b) O CH3CH₂CHCOCH₂CH₂CH³ CH3 O…

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.