Lab Report Sheet: Part A: Determination of Mass Percent of Iron (Fe) Mass of evaporating dish and unknown sample Mass of evaporating dish Mass of original sample Mass of evaporating dish after removing iron fillings Mass of Fe Percent of Fe in sample Calculations: Part B: Determination of Mass Percent of Sodium Chloride (NaCl) Mass of (NEW) evaporating dish, watch glass, and NaCl Mass of evaporator dish, watch glass Mass of NaCl Percent of NaCl Calculations: Part C: Determination of Mass Percent of Silicon dioxide (SiO₂) Mass of evaporating dish and SiO₂ Mass of evaporating dish Mass of SiO₂ Percent of SiO₂ Calculations: % % 1111 %

Q: What is the energy change when the temperature of 11.2 grams of solid diamond is decreased from 39.3…

A: Formula used :Q = m * c * ΔT where: Q is the heat transfer (in J)m is the mass of the solid diamond…

Q: The operations involved in preparing a diluted solution from a more concentrated solution are shown.…

A: Given , Equation : 0.363(±0.004)M ×15.00 (±0.03)mL100.00(±0.08) mL

Q: Nuclei with the same number of neutrons but different mass numbers are called isotones. Write the…

A: Nuclei with the same number of neutrons but different mass numbers are called isotones. Mass number…

Q: What is the by-product of the following reaction? NH₂ 8. + a. H₂O b. C.Hi C. H 10 i d. HO ii Select…

A: Identify the product and by-product of the following incomplete reaction.

Q: Calculate all the concentrations in equilibrium in a 0.4M solution of magnesium hydroxide magnesium…

A: Mg(OH)2 is a base which get dissociated in this way -: Mg(OH)2 ⇌ Mg+2(aq) + 2OH- (aq)

Q: 4. Draw resonance structures for the following cation. Use arrows to show the electron movement. 5.…

A:

Q: 4. Select all that is considered spontaneous a. Cleaning your room b. A piece of bread molding after…

A: A spontaneous process is a process that occurs without the need for an external influence and…

Q: 5. In the lowest energy conformation of the compound below, how many alkyl substituents are axial…

A:

Q: Calculate the rate of formation for H2, if the rate of change for H2O is a - 0.0559 M/s for the same…

A:

Q: The value of Ka for hypochlorous acid is 3.50×10-8. What is the value of Kå, for its conjugate base,…

A: In this question, we will determine the Kb value of its conjugate base. Given that,  Ka value of…

Q: Consider the IR spectrum given below. Which statement BEST describes the functional groups present…

A: A question based on IR spectroscopy. An IR spectrum is prescribed which is to be matched with the…

Q: Determine which of the following alkyl halides will react faster in an E2 reaction with NaiPr and…

A: The E2 reaction is the elimination reaction and it involves the conversion of an alkyl halide into…

Q: B. C. D. E. F. 10nM solution 5nM solution 2.5nM solution 1.25nM solution 0.6nM solution I

A: Solutions- To converted concentration in 1 ml total volume of each assay. we have to consider…

Q: Which drawing best represents the resonance hybrid for the given molecule? Å 00

A: One a compound we can write more than two Lewis structures which are differ by only position of…

Q: What is the identity of the uknown metal?

A: Compare calculated the density of unknown metal with the given densities of metals.  given: density…

Q: GENERAL INSTRUCTIONS: Fill the table with the necessary information. Use your MOLECUL MOLECULAR…

A:

Q: Which structure is consistent with this ¹3CNMR spectrum? Feld In S S 60 40 20 0 200 180 160 140 120…

A: Number of signals in 13C NMR = Number of sets of carbons in different electronic environment

Q: A flask contains a mixture of two gases: NO2 and Ne. The flask holds 0.519 mol of NO2 and an unknown…

A:

Q: Calculate the changes in the Gibbs free energy (in kJ) when 4.0 moles of an ideal gas at 280 K…

A: Everything can not be explain properly in TYPED form,so i use hand written.

Q: OH + Na OE a. draw the products and label the acid, base, conjugate acid and conjugate base with pk,…

A: A base is a compound which abstracts a proton from an acid and form a conjugate acid. And the acid…

Q: Given the standard enthalpy changes for the following two reactions ΔΗ° = 9.2 kJ (1) N₂(g) + 2O2(g)…

A: The given information is as follows: (1)   N2(g) + 2O2(g) →N2O4(g)      ∆H1°=9.2 kJ    (2)   2N2O(g)…

Q: Calculate the amount of heat needed to melt 156. g of solid ethanol (CH3CH₂OH) and bring it to a…

A: According to the question,     The mass of the ethanol is given by(m) = 156 gThe molar mass of the…

Q: Calculate the initial [S₂O32] on the paper ([S₂O3²-]o), assuming the amount of S₂O3²- you added…

A: To find out the initial concentration of S2O32- on the paper, assuming that the amount of S2O32-…

Q: The following thermochemical equation is for the reaction of NH4NO3 (s) to form N₂O(g) and NH4NO3…

A:

Q: 1) 235 U+ n20 Sr+ ? + 3 n 38 13 2) 12 C + " He →→ 140 + ? ➜>>> 6 2

A: Given are nuclear reactions. Nuclear reactions are reactions in which two or more radioactive nuclei…

Q: Q2: For the following molecules, determine the number of IR active C-O stretching vibration: OFI a)…

A: In group theory, a representation is a set of matrices corresponding to symmetry operations such…

Q: What is the average kinetic energy (in kJ mol-1) of a hypothetical gas with molecular weight 31.2 g…

A: The energy of gas particles due to the motion of gas particles is known as kinetic energy. The…

Q: How many calories are required to heat the following? 52.7 g of aluminum from 100 ̊C to 285 ̊C

A: Given data, Mass of Al = 52.7 g Initial temperature = 100oC Final temperature = 285oC Data taken…

Q: See Figure 3-5. Which is a bond line drawing of (CH3)2CHCH₂OC(CH3)3? A B с

A: Answer : Given that, The molecule is : (CH3)2CHCH2OC(CH3)3

Q: Bromine has two stable isotopes: 79Br and 81Br with masses of 78.9183371 amu and 80.9162906 amu. If…

A: In this question we have to tell the the Mass of 79Br in 10 gram of Br which has 79.904 amu mass.

Q: Based on the concentration of Citric acid you calculate for 10 mL, is it safe to drink a 7-Up can…

A: Solution- Based on the concentration of Citric acid you calculate for 10 mL, Is it safe to drink a…

Q: A sample of hydrogen (H2) gas was collected over water at 60°C. If the total volume of gas…

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Q: Glycerin (C3H8O3) is a nonvolatile nonelectrolyte with a density of 1.26 g/mL at 25 °C. What is the…

A: The given data is as follows: The density of Glycerin = 1.26 g/mL The volumes of Glycerin = 50.0 mL…

Q: What is the IUPAC name of the following bicycloalkane?

A: Bicyclic alkanes are named using the IUPAC (International Union of Pure and Applied Chemistry)…

Q: following equilibria would be shifted to the left? ОН A) :0: B) mbe 9qvi C) OH, то CH,Ö: T + CH OH_…

A: Whenever an acid loses hydrogen ion it forms anion. The lion is called conjugate base of that acid.…

Q: The rate of a certain reaction is given by the following rate law: te=k[N₂] [H₂]² Use this…

A:

Q: Consider the following rate law: Rate = K[B] Which of the following equations could be used to find…

A: As we know the sum of the powers of the concentration terms occur in the rate law expression is…

Q: 14. Propose structure for a compound, C9H₁1Br that fits the following ¹H NMR data: 2.15 8 (2H,…

A: Nuclear magnetic resonance (NMR) spectroscopy is a technique used in analytical chemistry to study…

Q: Current Attempt in Progress A certain liquid has a vapor pressure of 6.91 mmHg at 0.0 °C. If this…

A: According to the question, The vapor pressure of the liquid is given by = P1 = 6.91mm Hg P2 = 1 atm…

Q: Which drawing best represents the resonance hybrid for the given molecule? OH to Об Oo'x Oo OH 5- OH…

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

Q: Can u help me with the question 2 for wrtie the fomula for each of the following ionic compounds:…

A: Given : name of compounds

Q: The mass of the average boysenberry is 0.28 ounces. The average Tesla weighs 4900 lbs. If one were…

A: Given: mass of boysenberry = 0.28 ounces = 0.28 x 28.3495 g = 7.938 g mass of Tesla = 4900 lbs =…

Q: Calculate the oxidation number for nitrogen in the follow- compounds. ing (a) NH3 (c) LigN (b) N₂O4…

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Q: 9) Which of the following compounds does not have the molecular formula C6H₁4O? (a) 1-hexanol (b)…

A: The molecular formula is the expression of the number of atoms of each element in one molecule of a…

Q: When the aromatic ring attacks a strong electrophile, E*, via the mechanism shown which of the…

A: Introduction

Q: Consider the following scenario, would say the figure is demonstrating: OOOO The less dense nexane…

A: When one substance is completely dissolved in another substance, then it is called completely…

Q: Enter your answer in the provided box. Determine the percent sulfuric acid by mass of a 1.21 m…

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Q: Which chemical reaction below yields the heat of formation of liquid ammonia (NH3)? 3H(g) + N(g)→→…

A: Reaction equation in which a mole of a chemical compound is formed from its constituent elements…

Q: Calculate the boiling point (T), in degrees Celsius, for a solution that contains 110.0 g of AICI,…

A:

Q: The Haber process is used to synthesize ammonia (NH3) on a large scale by the reaction of nitrogen…

A:

Analytical Tools

Analytical tools or analysis tools help one to get into a conclusion or results from the data collected. Analytical tools can be applied for simple data sets and also in the case of big data analytics.