1. Determine density of a sample. (show your work WITH units) Assume 1.5 grams of a material and an 8 mL change in volume when the material is placed in water.

Q: The equilibrium constant, K, for the following reaction is 55.6 at 698 K: H₂(9) + I₂(9)=2HI(g)…

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Q: Calculate the concentration carbon dioxide in water and pH of water  at 25 degree Celsius  and at 1…

A: The concentration is defined as the amount of substance present in the given volume of the solution.…

Q: 4. For a chemical reaction to be spontaneous at all temperatures, which of the following conditions…

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Q: What is exothermic and what is endothermic?

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Q: What is the volume, in liters, of 4.00 moles of methane gas, CH4, at 17 °C and 1.30 atm? Express…

A: Ideal gas equation: The temperature, pressure, volume, and mole of the gas are related by the ideal…

Q: Indicate whether each of the following solution combinations will make a buffer solution. 50.0 mL…

A: Buffer solution is a solution which resist in change in its pH when a small amount of acid or base…

Q: is put into a calorimeter (see sketch at right) that A sample of glass, which has a specific heat…

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Q: Kw(293 K) = 0.67 × 10-14 M² Kw(298 K) = 1.00 × 10-14 M² Kw(303 K) = 1.45 × 10-14 M² Assuming that…

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Q: Using standard reduction potentials from the ALEKS Data tab, calculate the standard reaction free…

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Q: What are the functional groups in 4-Methylphenyl 4-bromobenzoate? What would you expect there to be…

A: Functional groups are groups of atoms which shows the characteristic property of that groups. The…

Q: Triphenylmethyl (trityl) groups are often used for the protection of alcohols because they are…

A: To answer this question we need the concept of cabocation. In adementyl system which is very…

Q: 41. Consider the following redox reaction: 3C1022C1O3 + Cl (basic) The reduction half-reaction that…

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Q: Which was the better leaving group, bromine or chlorine? Give a reason for your answer. Are the…

A: Better leaving group are weak base.these are the conjugate base of strong acid . bromine is large in…

Q: How does bromobenzene react differently from benzyl chloride under SN1 and SN2 conditions, and why?

A: Bromo benzene is not react under both conditions bcz C-Bt bond is very strong due to aromaticity and…

Q: 10. WHAT ARE ACID HALIDES?

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Q: A titration is carried out to determine the concentration of the acid in an old bottle of aqueous…

A: Given :  Volume of NaOH = 75.3 ml  Concentration of NaOH = 0.250 M  Volume of HCl = 10.0 ml

Q: When the ionic compound Cs/O4 is dissolved in water, which species will react with water to a…

A: Weak acid have strong conjugate base and strong base have weak conjugate acid. strong conjugate base…

Q: What is the ionic compound for copper (I) oxalate?

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Q: 100.0 mL sample of natural water was titrated with NaOH. The titration required 10.25 mL of 0.1075 M…

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Q: A mole of an ideal gas with cp-5/2 R = 29.10 J mol-1 K-1 undergoes the successive change 1->2:…

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Q: Exercise The volume of 1 mole of Helium (He) gas at different temperature values given in the…

A: Here we are required to find the volume of Helium gas at 400 K from the plot of volume vs temperaure

Q: Why did Mendeleev organize the elements? A he noticed regular patterns in the properties of elements…

A: We have to select the correct statement to explain why Mendeleev organized the elements

Q: Analysis: 1. Reconcile your prediction with your observations. Write a definition for limiting and…

A: For the given HCl and sodium bicarbonate experiment, we have to answer the following questions: 1.…

Q: c) Aqueous Ba(OH)₂ is reacted with two equivalents of gaseous HC1 Enter your chemical notation here

A: When an acid reacts with a base results in the formation of salt and water this type of reaction is…

Q: When the following compound undergoes SN1 solvolysis in ethanol (why, if it is not tertiary in…

A: When alkyl halide is treated with alcohol or proton source in the presence of heat then the major…

Q: You need to make a buffer that has a pH of 5.72 that contains exactly 55 mM of a weak base. The…

A: We will solve this question using henderson hasselbalch equation.

Q: When the ionic compound CsF is dissolved in water, which species will react with water to a…

A: Answer: CsF is a salt made from the reaction of CsOH and HF and we have to find out whether any of…

Q: If the following electrochemical cell is constructed, what voltage will be measured on the…

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Q: Calculate the mole ratio of NaFNaF to HFHF required to create a buffer with pH=4.20pH=4.20.…

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Q: The following reaction is an example of oblas CH3 H3C H₂N (A) substitution reaction B) addition…

A: When some group is substituted by other group then it is called substitution reaction. When…

Q: The carbohydrate shown has [Select] carbon atoms. The carbons atoms are labeled 1-6. Which of these…

A: Chiral carbon centers are those on which four different groups are attached. So we need to check the…

Q: Consider the reaction given bellow Al(OH), (s) Al³+ (aq) + 3OH- (aq) ⇒ 3 Adding acid to this mixture…

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Q: Identify the subshell in which electrons with the following quantum numbers are found (a) n = 2, l…

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Q: What is E cell for the following reaction? 2 Ag(s) + Sn²+ (aq) → 2 Ag*(aq) + Sn(s) Ag (aq) + e E =…

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Q: What is the molarity of 710. mLmL of solution containing 2.40 mol of Na2SO4

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Q: What is the median of the values 7.79, 8.24, 5.81, 4.97, 1.04, 7.39, and 7.22?

A: Median value can be calculated as:

Q: The van der Waals equation for real gases contains an a parameter and a b parameter. Which statement…

A: The gases which have intermolecular forces of interaction between them are called real gases. They…

Q: In the laboratory, a student dilutes 29.1 mL of a 9.35 M hydrobromic acid solution to a total volume…

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Q: A few different types of electromagnetic radiation are listed in the table below. Complete the table…

A: From Planck's equation,                             E = hν  ----- 1                     Or, E = h…

Q: Propose mechanisms and products for the following transformations. Use the curved-arrow formalism to…

A: As per company norms, we can answer only first three

Q: 7.8 Give the starting alkene used to prepare the product. KI H3PO4

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Q: How to Calculate Mass of Solute Needed to Prepare Solution 1) How many grams of copper(II) sulfate…

A: The amount of solute present in a solution is expressed in terms of concentration. It is expressed…

Q: Mephedrone is a relatively now street drug that is better known as Drone or MLAT. The structure of…

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Q: Some chemical compounds are listed in the first column of the table below. Each compound is soluble…

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Q: Hund's Rules declare that single electrons in different half-filled orbitals within the same…

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Q: In the Figure below two closed volume containers are shown V = 1 dm³ each one, both at room…

A: Two container of volume 1 dm3(1 L) at 25.0°C, are filled with water at 25.0°C. In container A, 0.05…

Q: II: Assign common name to each of the following amines: 1. CH3- CH2 – NH - CH2 – CH3 2. CH3-CH2-CH2…

A: For the common nomenclature of amines the carbon chain is treated as alkyl group bonded to N atom.…

Q: Consider the titration of 25.0 mt. of 0.070 M HCN with 0.080 H NaOH, what volume of base, in…

A: We will use different formulas to calculate the pH. First we will find initial pH of the solution by…

Q: What is the calculated value of the cell potential at 298K for an electrochemical cell with the…

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Q: How many faradays are transferred in an electrolytic cell when a current of 2.0 A flows for 12…

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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.