Q.6 The standard enthalpy of combustion of solid urea (CO(NH2)2) is -632 kJ mol at 298 K and its standard molar entropy is 104.60 J K''mol'. a) Write the formation reaction of urea. b) Write the combustion reaction of urea.

Q: Define the term Interconverting Masses?

A: The term Interconverting Masses has to be defined below.

Q: Gaseous tetraphosphorus is prepared industrially from the electrothermal reaction of calcium…

A: The preparation of many  phosphorus compounds begins with P4O10. The acids and phosphates are useful…

Q: 1) ВаО? 2) Pb(NO:)2 + KI 3) Cs + Br2 4) Al + Fe(NO3)2

A: Given 1) BaO2 ------> 2) Pb(NO3)2 + KI ------> 3) Cs + Br2 ------> 4) Al + Fe(NO3)2 -------

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A: i) Disinfectants are those chemical agents which are designed to inactivate the microorganisms on…

Q: Which of the following is a chemical property of Sodium?A.melts at 60°CB.soft solid C.density of…

A: Chemical property is a characteristic of a compound that can be observed after it undergoes in a…

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A: Metals are the electropositive elements.

Q: The Mole Concept Sulfur compounds are converted to H2SO4 while NO, compounds are converted to HNO3,…

A: Given reaction is :  NH4+ + 2O2 --------> NO3- + H2O + 2H+

Q: Why is nitrogen more elctro negative than sodium?

A: Electronegativity refers to the ability of an atom to attract shared electrons in a covalent bond.

Q: Metamorphic rock is formed through and F heat, pressure G fire, cooling H weathering, erosion J…

A: F) HEAT AND PRESSURE IS THE CORRECT ANSWER . Metamorphic rocks form when rocks are subjected to high…

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A: Given : Empirical formula of MgO.  To find : Reason for first and third heating process.  Solution :…

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A:

Q: The molecule ___ causes bones to increase in density and strength -

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Q: A 3.873 gram sample of an organic compound containing C, Hand O is analyzed by combustion analysis…

A:

Q: Determine the empirical and molecular formulas of each of the following substances. Styrene, a…

A: Empirical formula :-The formula which shows only relative number of atoms of different elements…

Q: Question 6 AC 2.2 (1) The group 1 alkali metals such as sodium react violently with water and all…

A: All group 1 alkali metals are highly reactive with water and will react to produce the corresponding…

Q: Why is nitrogen innert

A: Nitrogen (N) is an element with atomic number 7 which exists as dinitrogen gas (N2) at room…

Q: (a) Illustrate (with example) the following principles of Green chemistry: (i) Use renewable…

A:

Q: Write a balanced equation for each of the followingreactions:a. Ammonia is formed by the reaction of…

A: A balanced reaction is a reaction in which the number of atoms of each element is same on both…

Q: What mass of HCl, in grams, is neutralized by a dose of milk of magnesia containing 3.56 g Mg(OH)2?

A:

Q: write the equation for the reaction described: A solid metal oxide, WO₂, and hydrogen are the…

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: Part A MISSED THIS? Watch KCV 7.5, IWE 7.6; Read Section 7.5. You can click on the Review link to…

A: 2NH3(aq) + CO2(aq) → CO(NH2)2(aq) + H2O(l)mass of NH3 reacts = 129.5 kg = 129500 gmass of CO2 reacts…

Q: Pyrite, also known as fool's gold, is composed of iron disulfide, FeS2. It is used commercially to…

A: Given, Pyrites (Fool's gold) is FeS2 Mass of FeS2 = 1 kg Mass of SO2 produced from FeS2 = ?

Q: Magnesium ribbon is converted to form an oxide of magnesium when it is burned as evidenced by a…

A:

Q: a) Explain the chemical bonding between Nitrogen(1N) and Chlorine(3CI) using Lewis electron dot…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: (a) Which of the following compounds exhibits hydrogen bonding: H2, H3, OH, CH3I, C6H5, CH3? (b)…

A: a) Hydrogen bondingis a special type of dipole-dipole attraction between molecules. It results from…

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A: The question is about general chemistry. we have to reason for the fact that we can easily wash our…

Q: How many grams of Ca(NO3)2 contains 36 grams of oxygen atoms? (A) 15 g (B) 30. g (C) 24.5 g (D) 37…

A: molar mass is defined when we take mass for only one mole ie, for 6.023 ×10-23 atoms. If we have to…

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A: Given incomplete table is :  Complete the given table = ?

Q: How many moles of water are made from complete reaction of 4.3 moles of oxygen gas with hydrogen gas…

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Q: Dimercaprol (HSCH₂CHSHCH₂OH) was developed duringWorld War I as an antidote to arsenic-based poison…

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Q: 3.39 (a) Which of the following molecules can hydrogen bond to another molecule like itself? (b)…

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Q: balanced

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Q: Write the type of compounds that are the main constituents of the following minerals: Sand…

A: We have to write the main constituents of the given minerals in the question.

Q: 4) You are given a solution and asked to determine which Group I cations are present in it. Addition…

A: Group I cations consists of Ag+, Hg22+ and Pb2+. Group reagent is HCl.

Q: . potassium carbonate + barium nitrate

A: The reactants given are  1) Potassium carbonate i.e K2CO3  2) Barium nitrate i.e Ba(NO3)2

Q: Three alloys as fellow: 1. (AB) alloy has atomic weight of 107.6 g/ mol , density of 13.42 g/ cm',…

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Q: Phosphorus trichloride is important in the manufacture of insecticides, fuel additives, and flame…

A: The solutions are given below