From the following information, Substance MgO(s) HCl(g) MgCl2(s) H₂O(1) calculate AH° in kJ for the following reaction: a) +122 kJ AH (kJ/mole) -601.8 -92.3 b) -122 kJ -641.6 -285.8 MgO(s) + 2HCl(g) → MgCl2(s) + H₂O) c) +141 kJ d)-141 kJ

Q: Through acid hydrolysis for 24 hours, Jackson obtained the following amino aci residues:…

A: Given that, a polypeptide through acid hydrolysis for 24 hours, gives the below given amino acid…

Q: N2O4(g) ⇔ 2 NO2(g) Kc = 4.8 x 10-3 what set of concentrations represents the equilibrium conditions?

A: Let the initial concentration of N2O4 is equals to 1. Now we will solve the equation for calculating…

Q: Which of the following processes is a physical change? Burning gasoline O Cooking an egg Decomposing…

A: Physical change: In a physical change only the state of matter changes. In this change different…

Q: CHEMISTRY (Please write the complete solution legibly. No long explanation needed. Answer in 2…

A: Thermodynamics is branch of chemistry in which we deal with amount of heat evolved or absorbed by…

Q: Perform synthesis Show reagents. NH₂ CH3 19 CH3 CH2

A:

Q: This is a tale about Algernon the Organic Chemist. In his laboratory one night, Algernon attempted…

A:

Q: What is the organic product formed in the following reaction ? :N(CH3)2 I + H-N(CH3)2 II N(CH3)2 III…

A: Option (A) II is the correct answer.

Q: Write balanced molecular, ionic, and net ionic equations for the reactions that may occur when the…

A:

Q: Equal masses of hydrogen gas and oxygen gas are reacted to form water. Which substance is limiting?…

A: It is based on the concept of the stoichiometry.  Here we are required to find the limiting reagent…

Q: For the cell Fe|Fe+2(a=0.6)||Cd+2(a=0.01)|Cd calculate the potential of the cell at 298K. Hint,…

A:

Q: Listen Water is the most common amphoteric substance because it neither behaves as an acid nor as a…

A: Water is a universal solvent in which most of the substance are get dissolved due to the formation…

Q: Which of the following correctly describe the shape of the molecule or ion?

A: we have to determine the molecule/ion with correct shape

Q: Draw the Lewis dot diagram for a Be anion.

A:

Q: When the Cu²+ concentration is 1.28 M, the observed cell potential at 298 K for an electrochemical…

A:

Q: Why is the acid concentration not written directly on the packaging instead of the density and…

A: Answer: Packaging means covering the product itself to protect from damage, leakage,dust, pollution…

Q: Using only the periodic table arrange the following elements in order of increasing ionization…

A: Ionization energy (EI): When an electron is removed from the outermost shell of an isolated gaseous…

Q: Acids O Produce H* in solution. O Feel slippery O Produce OH in solution O Contain Cl

A: we have to complete the given statement with respect to an acid

Q: Using only the periodic table arrange the following elements in order of increasing atomic radius:…

A: Atomic radius: The distance between the nucleus and the outermost electron is known as the atomic…

Q: Which of the following ions has the smallest size? О сг Br O Ga³+ Okt Ca2+

A: Atomic radius: The distance between the nucleus and the outermost electron is known as the atomic…

Q: A quantitative observation is called a measurement. Is this statement true or false? True False

A:

Q: What volume of carbon dioxide is produced when 94.8 g of calcium carbonate reacts completely…

A: Given  Mass of CaCO3 =94.8 gm Molar volume 1 mole=22.4 L

Q: Which of the following is true of a system at equilibrium? a) No new product molecules are formed.…

A: A system is said to be at equilibrium, when both the forward and backward reaction takes place at…

Q: A solution has [H]=4.0 x103 M. The [OH-] in this solution is ORM M M ORM none of these

A:

Q: Which of the following atoms has the smallest atomic radius? O a) p Ob) As OC) N d) Bi e) Sb

A: These types of questions are done according to the periodic trends of elements in a periodic table.

Q: How many grams of solid sodium cyanide should be added to 1.00 L of a 0.149 M hydrocyanic acid…

A:

Q: Which of the following involves a chemical change? boiling water melting ice chopping wood cooking…

A: Chemical change -: Chemical change is permanent change. If Chemical change occurs in any substance…

Q: When the following molecular equation is balanced using the smallest possible integer coefficients,…

A: Whenever an acid and base reacts together then they form salt along with water. Similarly when the…

Q: Does a reaction occur when aqueous solutions of lead(II) nitrate and zinc sulfate are combined? O…

A: Here, we have to write the net ionic equation for the reaction between lead (II) nitrate and zinc…

Q: Does a reaction occur when aqueous solutions of chromium(II) chloride and potassium hydroxide are…

A:

Q: Gaseous ethane (CH, CH₂) reacts with gaseous oxygen gas (0₂) to produce gaseous carbon dioxide (CO₂)…

A: When alkane react with oxygen then they form carbon dioxide and water.  The general formula for…

Q: Which alkyl halide has the highest reactivity to nucleophilic substitution reaction? CH3F CH3CI CH31…

A:

Q: Which of the following is an allowed set of four quantum numbers? OA.n=5, 1 = 4, m = -4, ms = -1/2…

A: Since, For representation of electron in an orbital we use four type of quantum number-- 1)Principle…

Q: What is the molarity of an NaCl solution prepared by dissolving 9.3 g of NaCl in 350 mL of solution?…

A:

Q: D Listen Calculate the concentration of chloride ions when 100.0 mL of 0.200 M sodium chloride is…

A:

Q: What is the name of the element with a valence electron configuration of 2s²? What is the name of…

A:

Q: How many isomers of C₂H16 are there? a) 9 Ob) 7 Oc) 12 O d) 1 e) 4

A: The compounds with the same molecular formula but different bond connectivity are structural…

Q: What volume of NH3(g) at 400C, 650 mm Hg pressure, are required to produce 50 grams of H2O in the…

A: The balanced equation is 4 NH3(g) + 3O2(g) → 2N2(g) + 6H2O(l) Mass of water = 50 g Molar mass of…

Q: For the transition: HgS(red) = HgS(black) deltaG°=4100-6.0T. Determine the transition temp in…

A:

Q: . (+) Chloramphenicol is a powerful antibiotic isolated in 1949 from the Streptomyces venezuelae…

A:

Q: Choose the state of water in which the water molecules are farthest apart on average. steam (vapor)…

A: Different states of matter can be interconverted by changing the temperature and pressure of the…

Q: 2 H Arrow-pushing Instructions AA base :0: XT OH H3C H3C The aldol reaction is a carbonyl…

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

Q: Question 18 Tools Question 18 Which of the following substances would give a pH test result greater…

A: Acids are those substance which gives H+ ion when dissolved in water while bases are those substance…

Q: What are the precipitates that were produced during the calcium and chloride ion test? Write the…

A: The precipitate formed when a reagent is added to the solution and a insoluble product is formed…

Q: Question 10 Sodium oxalate reacts with calcium chloride. What is the sum of the coefficients for the…

A: Sodium oxalate reacts with calcium chloride. What is the sum of the coefficients for the reactants…

Q: An alkyl halide (RX) reacts with (-)OCH3 to give an ether product, R-OCH3. The observed rate law for…

A: Here we are required to find the mechanism by which an alkyl halide reacts with alkoxide to form…

Q: Carry out the given conversions from one metric unit to another. 0.583 µl. = 38.1 km= X10 TOOLS ml.…

A: 0.583 microliter = 0.000583 ml

Q: Solve the following: a. A lab technician needs to prepare 500 mL of 0.18 M sodium hydroxide…

A: a) we have to calculate mass of NaOH needed in grams  b) we have to calculate the volume of…

Q: Write the cell notation for: Mn(s) +  2 Ag+    →   Mn2+    +   2 Ag(s)

A:

Q: Which of the following is the correct formula for the alkane that contains ten carbon atoms? a) Cio…

A: Alkanes are a series of compounds that contain carbon and hydrogen atoms with single covalent bonds.…

Q: Determine the average rate of change of B from t = 0 s to t = 362 s. A2B rate = M/S Time (s) 0 181…

A: Given , Reaction : A→2B