Calculate AHxn for 2NOCI(g) N₂(g) + O₂(g) + Cl₂ (g) given the following set of reactions: 1 NO(g) → N₂(g) + O₂(g) NO(g) + Cl₂(g) → NOCI (g) kJ 0x10 —— Be sure your answer has the correct number of significant figures. X AH=-90.3 kJ AH-38.6 kJ

Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

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Q: A chemist carefully measures the amount of heat needed raise the temperature of a 488.0 g sample of…

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Q: Joules (J) are a measure of energy.  Chemists often measure energy in calories (cal).  If 1 cal =…

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Q: J cal kJ 598 113 0.810

A: To convert the energy units, suitable conversion factors are required. The given energy units are…

Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

A: Given , 1 cal = 4.184 J 1kcal = 1000 cal

Q: Draw the starting structure that oould lead to this polymer under radical ond ditions

A: To draw the starting structure that would lead to the polymer under radical conditions.

Q: Which of the following statement is incorrect? Select all the incorrect statements, wrong choices…

A: Some statements from thermodynamics is given. We need to find the incorrect statement from the given…

Q: When NH4Cl(aq) reacts to form NH3(g) and HCl(aq), 21.07 kcal of energy are absorbed for each mole of…

A: We have to determine the value of ∆H for the given reaction

Q: q= 4.184 heat energy in joules. Use the formula: q=(m)(c)(ΔT) where m=mass of water being heated in…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 196.0 g sample…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 545.0 g sample…

A: Given: mass of substance = m = 545.0 g Temperature change, ∆T  =( 2.8+ 273.15 ) K to ( 13.0 + 273.15…

Q: new temperature a e correct number Dumber c

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 748.0 mg sample…

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Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains…

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Q: Copper(1) oxide can be oxidized to copper(II) oxide: Cu₂0 (s) + O₂(g) → 2 CuO (s) AHO 2 rxn Given AH…

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Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

A: In this problem, we will discuss about the units of energy: Joule-1 joule is equals to 0.000239006…

Q: Given the following data C₂H4 (9)+302(g) → 2 CO₂ (g) + 2H₂O(l) 2C₂H6 (9) +702 (9)→ 4 CO₂(g) +…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 162.0 g sample…

A: Answer: When heat is added to a substance, its temperature rises but the value of temperature rise…

Q: A 26.9 g rock rolls down the hill at a speed of 81.9 m/s. What is the Kinetic energy of the rock? (…

A: given mass of rock(m) = 26.9*10-3kg speed of rock(v)= 81.9 m/s kinetic energy (KE) =?

Q: b) Assume that the reaction given above is an reversible reaction. Propose operating condition…

A: We have to apply Le Chatlier's principle

Q: How many grams of nitrogen gas are needed to produce 5.0 liters of ammonia at STP? O 15.7 g 8.20 g O…

A: Given values -> Volume of NH3 = 5.0 L At STP -> T=273K P=1 atm

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 663.0 mg sample…

A: Given Mass = 663 mg = 663 x 10-3 g Heat = 12.8 J T1 = 0°C T2 = 21.4°C

Q: chemistry

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

Q: Carbon disulfide burns in air, producing carbon dioxide and sulfur dioxide. CS2 (l) + 3 O2 (g) → CO2…

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Q: Given the following thermochemical equations: 2 OF2 (g) → 02 (g) + 2 F2 (g) 2 CIF (g) + O2 (g) →…

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Q: 227.9 Joules of heat are added to 25.96 grams of a liquid, raising the temperature of the liquid…

A: Heat added= Cp*m*∆T  Cp specific heat capacity  m is mass  ∆T change in temperature

Q: When methanol, CH, OH, is burned in the presence of oxygen gas, O₂, a large amount of heat energy is…

A: One mole of methanol react with oxygen and produced one mole of carbon dioxide and two mole of water…

Q: he specific heat capacity o

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Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

A: Given;  The joule (J) is the SI unit of energy. 1 calorie (cal) = 4.184 J 1 kilojoule (kJ) = 1000 J

Q: What is Keq if the concentration at equilibrium are: [H2] = 1.01 M; [N2] = 0.250 M, and [NH3] = 1.50…

A: Equilibrium Constant : Equilibrium constant can be written as ratio of product to the reactant where…

Q: Hydrogen, H2, is used as rocket fuel. The hydrogen is burned in oxygen, O2, according to the…

A: To determine the moles of hydrogen present, No. of moles = wM=200 g2.01 g/mol= 99.5 moles

Q: The specific heat capacity of solid iodine is 0.427 J/g⋅⋅oC.  Calculate the final temperature (°C)…

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Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

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Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

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Q: When we see that 10 gummy bears are 80 Calories meaning that each bear is 8 Calories, this really…

A: 10 gummy bears = 80 calories.  1 gummy bear = 8 calories. 1 calorie = 4.184 J 1 kJ = 1000 J.

Q: heat change of the reaction Al2Cl6(s) + 6 Na(s) ⎯→ 2Al(s) + 6 NaCl(s) is –256.2 kcal.  The heat of…

A: Given, □Hrxn = -256.2 kcal □Hf(NaCl) = -98.3 kcal □Hf(Al) = Hf(Na) = 0 kcal ( in standard state…

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains…

A: Mass of water = 8.4 Kg Q= 97.5 KJ Initial temperature = 25° Final temperature = ?

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.