A scientific theory is a tentative explanation for an observation.   Question 1 options:   True   False   Question 2  Complete the following calculation. Report your answer with the correct number of significant figures. (2.071 / 6.4415) - 10.65 = ?

Q: Knowing the following 2 H₂S (g) + CH₄ (g) ⇄ 4 H₂ (g) + CS₂ (g)      Kc=5.27×10-8 What is the value…

A: 2 H2(g) + 1/2 CS2(g) ⇌ H2S(g) + 1/2 CH4(g)  ;  Kc = 4.36 x 103

Q: Question 8 Common household products, such as spray adhesives, contact cement, arts and craft…

A: Molality is defined as the no of moles of solute present in one kg of solvent.  Molality = no. of…

Q: Question 12 Potassium ferrocyanide (K4Fe(CN)6) is used in the tempering of steel and in process…

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Q: Addition of 1 mole of H2 to cyclohexene releases -28.6 kcal. Estimate the energy that should be…

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Q: What is the molar mass of an unknown gas with a density of 2.10 g/L at 1.00 atm and 25.0 °C?

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Q: Draw an alkyl bromide with proper stereochemistry that can be used to synthesize the given alkene as…

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Q: f 12-Methylcyclohexanone) CH 3 1.) LDA 2) CH ₂ I

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Q: A popular blue colored medicine usually used to trea symptoms of flu has been analyzed and found to…

A: We have to first calculate the molar mass of each component and then we will calculate the…

Q: 7. Predict the product(s) AND draw the mechanism for the following reaction. CH₂CH₂OH/H₂SO4

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Q: What would be the “i” value for the following solutes: (a) BaCl2 (b) NaNO3 (c) C6H5O6…

A: To determine the "i" values

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A: Bartleby does not provide a handwritten solution, Hence providing you the typed solution. “Since you…

Q: What evidence supports or refutes that during an experiment, purified extract is pure caffeine?

A: Few methods including nmr chromatography are given below

Q: What volume (in mL) of 0.200 M HCI would be required to completely react with 4.40 g of Al in the…

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Q: A popular blue colored medicine usually used to treat symptoms of flu has been analyzed and found to…

A: The mole fraction is the ratio of the number of moles of a substance to the total number of moles…

Q: chemical formula for the ionic compound formed by the ions Ca²+ and CO3²-

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Q: the H+ and OH are incorrect.Can you please correct?

A: H+ and OH- ion concentration can be calculated from the given pH value by using the relation of pH…

Q: A popular blue colored medicine usually used to treat symptoms of flu has been analyzed and found to…

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Q: HC=CCH₂CH₂CH₂CH3 H₂0, H* OH H₂C=CCH₂CH₂CH₂CH3 =CCH₂CH₂CH =ondon CH3CCH₂CH₂CH₂CH3 2-Hexanone

A: Organic reactions are those in which organic reactant react to form organic products. In the given…

Q: 5 At a particular temperature, the reaction below has Kc = 0.680 CO(g) + H2O(g) – COz(g) + Hz(g) In…

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Q: < Question 9 of 17 What is the volume in liters of 4.55 moles of an ideal gas stored at 35 °C and…

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Q: Q1/ Select the correct choice:    1. The process of removing an electron from an atom is called…

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Q: Here are two possible methods for measuring the volume of an irregular shaped object: a) Add it to a…

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Q: Draw the Lewis structure (line-bond structure) for the skeletal structure shown below

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Q: Appropriate reasons for the deviation form the Beer's law among the following are (C) Very high…

A: Beer’s law is subjected to certain real and apparent deviation.

Q: A 20.0-g sample of methyl alcohol (CH3OH, molar mass = 32.04 g/mol) was dissolved in 43.3 g of…

A: Given : mass of CH3OH = 20.0 g  Mass of water = 43.3 g

Q: 6) Which of the following compounds gives an 1H NMR spectrum with the following signals? triplet at…

A: Number of signals in 1H NMR = Number of protons in different electronic environment

Q: A 150 mL solution of calcium hydroxide is titrated with 0.3 M HBr. What is the concentration of the…

A: To solve this question, first write down the reaction between calcium hydroxide and HBr. Use that…

Q: What is ΔrH° for the following chemical reaction? CS2(g) + 2H2O(l) → CO2(g) + 2H2S(g) Express your…

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Q: How many moles of manganese are in 1.00 g?

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Q: Which of the following is the correct condensed structure for the following compound? Н H HHHHH C H…

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Q: How much bauxite is required? (It takes 2.1 kg of crude bauxite to produce 1.0 kg of aluminum…

A: Answer: In this question we have to find out the mass of Al that can be produced from Aluminum…

Q: Predict the charge on the major species of the peptide Val-Lys-Asp-Ile-Arg-Ser-Asn at pH 7.0.

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Q: An 18 carat white gold is made by dissolving 12.5188 g of Copper, 14.1431 g of Silver, and 63.5172 g…

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Q: Duncan takes a break from studying and goes to the gym to swim laps. If swimming burns 9.45x105 cal…

A: Given : 9.45×105 cal  Tip : 1 cal = 4.184 joule

Q: Consider the reaction A + B --> C + D The rate law for the reaction is, rate = KA][B]. The measured…

A: The rate law for the reaction is as follows: rate = k A B By using this rate law first of all we…

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Q: You send a sample of rice to the lab for the determination of the total arsenic content. The analyst…

A: Given that the concentration of arsenic in the diluted solution (20.0 mL) is 20 μg L-1.

Q: Types of Chemical Reactions: Double Replacement __BaCl, _K₂SO4 a) Bak₂ + CISO4 b) BaSO4 + KCL c)…

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Q: If the mixing ratio of CO2 is 350ppmv calculate the CO2 concentration in terms of moles/L and…

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Q: 3:32 AM Tue Jan 31 < Question 14 of 17 What is the density of nitrogen gas at 67.3 °C and 0.288 atm?

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Q: Consider the combustion reaction of glycine at standard condition and 298 K: NH₂CH₂COOH (s) + O₂ (g)…

A: This problem is based on First Law of Thermodynamics. The solution is given below.

Q: Here are two possible methods for measuring the volume of an irregular shaped object: a) Add it to a…

A: For irregularly shaped body - it cannot be measured through a ruler.

Q: For the reaction 2H₂O(1)→ 2H₂(g) + O2(g) AG 461 kJ and AH = 572 kJ at 339 K and 1 atm. This reaction…

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Q: Predict the 13C NMR chemical shift of the circled carbon in the structure below. H. H * H H H A)…

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Q: Compare sodium with aluminum. Which one would you predict to have a higher effective nuclear charge?…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: What are "common names" of organic molecules? How do those rules change if we substitute some of the…

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Q: A sample of an alkali metal that has a b.c.c. unit cell is found to have a mass of 1.000 g and a…

A: Answer: Alkali metal are present in the 1st group of periodic table and among all the metals they…

Q: What is the skeleton equation for Br2+AuF3 and what type of reaction is it ?

A: The given information is as follows: Br2 + AuF3 → ? The type of reaction = ?

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.