Which of these has the correct sign for ASsys? O HCI(g) + NH3(g) NHẠCI(s); delta S is positive O Mg(s) + Cl2(g) → MgCl2(s); delta S is positive O 2 O3(g) → 3 O2(g); delta S is negative O 2 H2S(g) + 3 O2(g) → 2 H20(g) + 2 SO2(g); delta S is negative

Q: When two cotton plugs, one moistened with ammonia and the other with hydrochloric acid, are…

A: From Graham’s law of diffusion we get Here, M2 is the molecular mass of HCl = 36.5 g/mol M1 is the…

Q: 2 B (s) + 3 H2 (g) → B2H6 (g) ΔrHº = ??? Use the following information to solve for the enthalpy of…

A: Given, a) 4B (s) + 3 O2 (g) → 2 B2O3 (g) ΔrHº = -2544 kJ/mol b) H2 (g) + 1/2 O2 (g) → H2O (g) ΔrHº =…

Q: In a certain experiment, 0.7000 mol of hydrogen gas reacted with 0.7000 mol of solid iodine at a…

A: Given,  In a certain experiment, 0.7000 mol of hydrogen gas reacted with 0.7000 mol of solidiodine…

Q: Consider these reactions, where M represents a generic metal.…

A:

Q: Consider these reactions, where M represents a generic metal. 2 M(s) + 6HCl(aq) - > 2 MC13(aq) + 3…

A: According to the question, The given reactions are, eq-1   2Ms+6HClaq→ 2MCl3aq+3H2g          ∆H =…

Q: When 1.31 g of KClO3 was added to 138.34 g of water in a calorimeter, the  temperature dropped by…

A: mass of KCIO3 = 1.31 g mass of water = 138.34 g Temperature dropped = 0.506 °C Heat capacity of H2O…

Q: A 42.5 gram piece of chromium is heated to a temperature of 98.70ºC. The metal is then dropped into…

A: Mass of chromium = 42.5 g Mass of water = 36.0 g To find final temperature

Q: The following chemical equation, ΔΗ C (graphite, s) + 2 O2 (g) → CO2 (g) - 393. 5 kJ / mol - Is an…

A: Given reaction,         C(graphite, s)  +  2 O2(g)  →  CO2(g)    ∆H  =  - 393.5 kJ/mol

Q: A 25.0 mL sample of 0.5 M AgNO3(aq) is mixed with a 25.0 mL sample of 0.5 M NaCl(aq) in a…

A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 106.0 mg sample…

A:

Q: A 55.5g sample of brass, which has a specific heat capacity of 0.375·J·g−1°C−1, is put into a…

A:

Q: Consider these reactions, where M represents a generic metal. 2 M(s) + 6HCl(aq) 2 MC1₂ (aq) + 3…

A: The enthalpy change is a state function and the Hess law states that the change of enthalpy in a…

Q: A 531.6 g sample of sodium undergoes a temperature change of +86.75 °C while absorbing 857.4 joules…

A:

Q: you determine that the mass of a Florence flask and a piece of aluminum foil weigh 39.964 g. After…

A: Given: mass of Florence flask and Al foil = 39.964 g mass of flask, foil, and condensed vapors  =…

Q: Choose all of the processes from below which describe changes which are independent of the path by…

A: Concept - Path functions are properties or quantities whose values depend on the transition of a…

Q: Water is exposed to infrared radiation of wavelength 2.80 x 10-4 cm. Assume that all the radiation…

A: The heat absorbed by water can be expressed as,…

Q: 9.0 g of cream at 13.2 °C are added to an insulated cup containing 150.0 g of coffee at 94.6 °C.…

A:

Q: -1 " A 25.0 g sample of quartz, which has a specific heat capacity of 0.730 J.g •°C is dropped into…

A: The objective of this question is to calculate the equilibrium temperature of the water when a…

Q: N2(g) + 3 H2(g) → 2 NH3(g);  ΔH = −91.8 kJ How much heat is released when 1.521 ✕ 104 grams of…

A: Step 1: Here, for the given process, the heat released in formation of 2 moles of ammonia is given…

Q: CH4 instead of water. The enthalpy Imagine a person sweats for evaporating liquid CH4 is +8.2…

A: A question based on chemical thermodynamics that is to be accomplished.

Q: 8. Dissolving ammonium nitrate in a beaker containing water can be represented by the following…

A: Answer

Q: Consider these reactions, where M represents a generic metal.…

A: ⊙Given, 2M(s)+6HCl(aq)⟶2MCl3(aq)+3H2(g),ΔH=−914.0 kJ—I HCl(g)⟶HCl(aq) , ΔH=−74.8 kJ—II…

Q: How many joules of energy would be required to raise the temperature of 3.2 grams of mercury  4.2ºC?…

A:

Q: Im having trouble finding J*mol^-1*K^-1.

A: The given temperature in Kelvin scale can be written as follows,-9oC = 264.15 K11.3oC = 284.45…

Q: onsider these reactions, where M represents a generic metal. 2 M(s) + 6HCl(aq) → 2 MC1₂ (aq) +…

A:

Q: Using the equations 2 H: (g) + O2 (g) → 2 H2O (1) AH° = -572 kJ/mol Ca (s) + ½ O2 (g) → CaO (s) AH°…

A: The first chemical reaction is, 2H2g+O2g→2H2Ol                 ∆H°=-572 kJ/mol......(1) The second…

Q: Using Hess's law, what is AH°rxn for the following reaction? AB3(9) + 6Cg) → As) + 3BC2(g) A(s) +…

A: Ans A. 235kj/mol

Q: 15.6 g of carbon graphite releases 49.2 J of heat and the temperature changes from 29.7 °C to 25.3…

A: Given- Specific heat capacity of a substance is the amount of heat required to raise one gram of the…

Q: Calculate the energy required to heat 541.0mg of mercury from 11.4°C to 16.6°C. Assume the specific…

A: The specific heat capacity for a given substance refers to the amount of heat which is needed to…

Q: metal X =51.0g; specific heat capacity =0.44 J/C If metal X is heated to 86C and put into a…

A: Information of question

Q: Calculate the energy required to heat 141.0mg of mercury from −1.1°C to 17.8°C . Assume the…

A:

Q: A chemist carefully measures the amount of heat needed to ralse the temperature of a 1.48 kg sample…

A: Molar heat  capacity of a substance is the change in heat when one mole of substance is heated and…

Q: Using the data below, calculate AHrxn for the production of acetylene from the reaction between…

A: Given :Objective :

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 639.0 g sample…

A: