Calculate the energy given off if 75.5 g of NH3 is reacted with O2.

Q: How much energy is released during the formation of 98.7 g of Fe according to the reaction below?…

A: Given reaction is :  Fe2O3 (s) + 2Al (s) ----> Al2O3 (s) + 2Fe (s) , ΔHrxn = -852 KJ/mole  How…

Q: How many grams of hydrogen H2 are produced by the reaction of 33 grams of magnesium Mg?

A: m H2 = ? m = 33 g Mg Mg + 2HCl --> H2 + MgCl2 MW H2 = 2 g/gmol MW Mg = 24.3 g/gmol MW MgCl2 =…

Q: the formation reaction for HClO3(g)

A:

Q: How many grams of NH4NO3 are required to produce 33.0 grams of N20?

A: Given :- mass of N2O = 33.0 g  To calculate :- mass of NH4NO3 (in g)

Q: Ammonia reacts with oxygen as follows: 4NH3(g) + 702(g) 4NO2(g) + 6H20(g) AH° = -1132 kJ %3D

A: Balanced chemical equation: 4NH3(g)  +  7O2(g)  ----->  4NO2(g)  +  6H2O(g)    ∆H = -1132 kJ…

Q: Which of the following laws explains the following statement? Acetylene gas, regardless of its…

A: This is the law of chemical proportion .

Q: Which of the following elements will be directly produced when Silicon burns with Helium? A. Sulfur…

A: Nuclear reaction: A nuclear reaction must cause a transformation of at least one nuclide to another.…

Q: (b) If 81.00 g of water (H20) is formed during this reaction, what mass of BaO was used?689.98g

A:

Q: There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of…

A: The molar mass of C2H2 = 26 g/mol Molar mass of CH2CHCOOH = 72 g/mol Molar mass of CaC2 = 64.1 g/mol…

Q: The reaction N2(g) + 3H2(g) -> 2NH3(g) at 400.0°C has an associated heat of reaction -92.22 kJ/mol.…

A: The heat of the reaction is -92.22Kj/mol  The given balanced reaction is:-  N2(g) +3H2(g) →2NH3(g)…

Q: a(s) +;02(g) → CaO(s) -63

A: Dear student I have given answer to your question in the image format.

Q: Is the following chemical equation balanced? Does it follow the Law of Conservation of Mass? 2Fe…

A: In a balanced chemical reaction all the atoms of each element is same in reactants side with that of…

Q: What is the enthalpy change if 45.0 g of CaO is allowed to react with an excess of carbon?

A: The standard enthalpy for a given reaction can be called as the enthalpy change for a given…

Q: b. If 2.08 mol water are produced, then how many moles of hydrogen peroxide were used?

A: The molecular formula of hydrogen peroxide is H2O2 It easily undergo dissociation to produce water…

Q: (b) What mass of Na,AlO, can be formed from 165.0 g of NaOH?

A:

Q: 3. The reaction between Phosphoric Acid (H3PO4) with Calcium Hydroxide yields Calcium Phosphate and…

A:

Q: what is a balanced equation for the reaction of nonane,C9H20 , with oxygen O2?

A: The reaction of nonane with oxygen is a combustion reaction.  In combustion reaction, a hydrocarbon…

Q: If there are 6.2x1022 molecules of calcium carbide, CaC2, what mass of acetylene (C2H2) can be…

A: The solution of above question is-

Q: 15 mL of Cl2O7 (density = 1.9 g/mL) reacts with 10. mL of H2O (density = 1.0 g/mL). How many…

A: we have the equation as Cl2O7 + H2O→2HClO4 We know that, Density =MassVolume Hence Mass=Density X…

Q: 2Pb(s)+O2(g)⟶2PbO(s) How much oxygen is needed to react with 400 grams of lead?

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Q: How many grams of hydrogen is produced from 432 g chromium? 2Cr + 2H3PO4 ⟶ 3H2 + 2CrPO4

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Q: If reacting 3.08 g of chlorine monoxide (ClO), a highly reactive radical, with an excess of ozone…

A: Chlorine oxide reacts with ozone to form chlorine radical and oxygen gas. The equation for the…

Q: You heat 3.939 g of a mixture of Fe;O4 and FeO to form 4.197 g Fe203. The mass of oxygen reacted is…

A:

Q: What is the theoretical yield of SO 3  SO3 produced by 5.66 g g of S S ?

A:

Q: 1. How many moles of sulfur will you need to react with 1.42 moles of iron? Given the following…

A:

Q: Calculate the energy when 125 g of lead react with oxygen gas to form solid PbO.

A: Given that Enthalpy of formation of solid PbO = -217.6 kJ  The chemical equation is  Pb (s) + 1/2 O2…

Q: Consider the following reaction at 25 °C: 3 Ni(s) + N2(g) + 3 H,0(g) → 3 NiO(s) + 2 NH3(g) Given the…

A: ∆H = 391.3 kJ/mol

Q: The reaction shown below represents the formation reaction of water. 2 H2 (g)   +   O2 (g)   →   2…

A: The solution is as follows :

Q: • What mass of carbon dioxide is emitted by an automobile per 5.0 x 102 g pure octane used?

A:

Q: Calcula the iodide i NaF, 231 p

A: The main objective of the question is to find the ionic radius of the fluoride ion (F-) by using the…

Q: 7. A human needs about 120. grams of glucose per day. How many 6 CO2 + 6 H20 > C6H12O6 + 6 O2 grams…

A:

Q: 2. If 2.500 g of Na2CO3 is used in the reaction, calculate the theoretical yield of NaCl.

A: Na2CO3 + HCl -----------> NaCl + H2CO3 1 mole of Na2CO3 to 1 mole of NaCl Given :  Weight of…

Q: How many grams of sodium oxide (Na2O) are produced from 3.55 g of Na?

A: The reaction for the formation of sodium oxide can be expressed as,                         2 Na + O…

Q: How much charge is required to reduce 1 mole of Fe^2+ to Fe?

A: The reduction of any species is generally done by addition of electrons to it. Since electron is a…

Q: 4) mu نن to NaOEL, ELOH 7 H30* → ?

A: This is name reaction knoevenagel reaction...

Q: How many grams of H2 are needed to produce 11.02 g of NH3?

A: The balanced chemical equation for formation of ammonia is given by

Q: How much energy is mass of PC13 is 137. 4 PC13(g) → P4(s) O 1.68 × 103 kJ O 1.20 x 103 kJ 7.89 x 102…

A: Given that : Mass of PCl3 = 545g Molar mass of PCl3 = 137.32g/mol Reaction = 4PCl3(g)  --->…

Q: methanol, AH = 1021 J/g %3D

A: Given data are as follows: Weight of combustible substance= 5.00 g Molar mass of methanol=32.04…

Q: What type of reaction is represent by the equation: C,H12 + 902 → 6CO2 + 6H20

A: The reaction shown is burning of alkane in air to produce carbon dioxide and water .

Q: If 10.7 kg Al reacts with an excess of Fe,O3, how many kilograms of Al,0, will be produced?

A: Given :-  2Al(s) + Fe2O3(s)  -----> Al2O3(s)  + 2Fe(l)  Mass of Al = 10.7 kg  To be calculated :-…

Q: What mass of sodium hydroxide ,NaOH, would be required to produce 5.97 g of the antacid milk of…

A: Answer :- The balanced chemical equation is -                     2 x 40 g                 58 g…

Q: What is the enthalpy change (in kJ) if 10.0 g of CaO reacts with an excess of C?

A: Since enthalpy of reaction is not given. It can be calculated using writing the equation and using…

Q: What mass of O2 can theoretically be obtained from 1.67 g of a KClO3/KCl mixture which is 75.0% by…

A: Here in the given question the mixture of KClO3 and KCl is =1.67 gram. but mass of KClO3  is 75% of…

Q: Question attached

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Q: How many grams of aluminum oxide (Al2O3) will be formed from 12.1 grams of oxygen (O2)

A:

Q: How many grams of H2 will be produced from 15.0 g of Al reacting with HCl? What mass of HCl is…

A: To solve this problem we will use the balanced chemical equation of the given reaction .

Q: 7. Determine the amount of heat (in kJ) given off when 5.43 x 105 g of NO2 are produced. 2NO + O2) →…

A: Formation reaction of nitrogen dioxide is given

Q: How can the following reaction be rewritten to include the energy value within the chemical…

A:

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.