If a 5.368 g sample of NH4NO3 is added to 40.0 mL of water in a calorimeter at 25 °C, what is the minimum temperature reached by the solution? (The specific heat of water = 4.18 J/g•°C; the heat capacity of the calorimeter = 650 J/ °C, NH4NO3 = 80 g/mol, dH20 = 1 g/mL) The heat of solution of ammonium nitrate (NH4NO3) is 26.2 kJ/mol. -7.7 oC 22.8 oC 27.2 oC 14.3 oC 21.4 oC

Q: When 0.728 g of sodium metal is added to an excess of hydrochloric acid, 7570 J of heat are…

A: Given: Amount of heat energy released (Q) = 7570 J Mass of Na = 0.728 g Molar mass of Na = 22.989…

Q: How much heat is released when 2.50 molesof HCl(g) are formed?

A: Reaction involved for the formation of HCl(g) H2(g) + Cl2(g) -------> 2HCl(g)  For this reaction…

Q: How much heat, in kJ, is produced by the amount of octane needed to drive 619 kilometers in a car…

A: Combustion reaction: 2C8H18(l) + 25O2(g) → 16CO2(g) + 18 H2O(l)  Energy released on combustion of 2…

Q: In the following reaction, how many moles of CH3OH are required to produce -9.671 x 103 kJ of heat?…

A:

Q: When 3 moles of C is formed, what is the change in enthalpy? 3A + 6B + 5 kJ → 2C

A: Answer given below

Q: „(1) + 15 0,(g) → 12 CO,(g) + 6 H,O(1) + 6542 kJ H, is burned and the heat produced from the burning…

A: First calculate heat release in 1 mole of benzene then use mole mole relationship After this…

Q: Nitrogen monoxide, a gas recently found to be involved in a wide range of biological processes,…

A:

Q: Determine the heat capacity of 20.0 g of water. The specific heat of water is 4.184 J/g °C

A: Given  Mass of water m=20g Specific heat capacity S= 4.184 Jg-1 °C-1

Q: A sample of a hydrocarbon is completely combusted in presence in O2(g) to produce 21.83 g carbon…

A: Given:Mass of carbon dioxide=21.83 gMass of water=4.47 gHeat=311 KJa). To find the mass of…

Q: a. If 1410 J of heat are applied to a 100g piece of metal pipe and the temperature of the pipe rises…

A:

Q: When 0.378 g of sodium metal is added to an excess of hydrochloric acid, 3930 J of heat are…

A: Given-> Weight of Na = 0.378 g Heat produced for 0.378 g = 3930 J  (1 KJ = 1000 J)

Q: 2. A 35 g metal ball made up of a mixture of element X and element Y is heated up to 77°C and…

A: Solution and calculation see below

Q: When 15.3 g of sodium nitrate, NaNO3, was dissolved in water in a constant-pressure calorimeter, the…

A:

Q: A 0.3423 g sample of pentane, C5H12. was burned in a bomb calorimeter. The temperature of the…

A:

Q: a. Hydrogen cyanide is used in the manufacture of clear plastics such as Lucite and Plexiglas. It is…

A: The question is based on the reaction stoichiometry. evolution of heat means production of heat.…

Q: When 0.238 g of sodium metal is added to an excess of hydrochloric acid, 2470 J of heat are…

A: 2Na(s) + 2 HCl (aq) -->2NaCl(aq) + H2(g) Enthaly of reaction=? Na has molar mass=23 0.238g of…

Q: The principal component of LPG is butane, C4H10(g). If combustion of 1 mole of butane produces 126…

A:

Q: How much heat must be absorbed to raise the temperature of 1.0 mole water from 0.0 °C to 25.0 °C?…

A:

Q: When 0.855 g of sodium metal is added to an excess of hydrochloric acid, 8890 J of heat are…

A: Sodium metal= 0.855gm Energy released = 8890J

Q: A 8.17 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A:

Q: Which sample is most likely to undergo the smallest change in temperature upon the absorption of 100…

A:

Q: When 0.615 g of sodium metal is added to an excess of hydrochloric acid, 6390 J of heat are…

A:

Q: Calcium hydroxide, which reacts with carbon dioxide to form calcium carbonate, was used by the…

A:

Q: 2C6H6() + 15 O2(g) – 12 CO2(g) + 6 H20(/) AH = -5.884 x 103 kJ - An unknown amount of C6H6(/) was…

A: Given 2C6H6(l) +15O2 (g) -> 12CO2 (g) + 6 H2O (l) Delta H = -5.884 × 103 KJ  For unknown amount…

Q: When hydrogen and oxygen are burned to produce water, heat is produced at the rate of 58 kcal/mole…

A: Given: Heat produced per mole of water = 58 Kcal/mol of water. And 1 mole of water contains = 6.02 ×…

Q: If 2.0 KJ of heat energy raises the temperature of a calorimeter containing 45.0 g of water from…

A: 2.0 KJ of heat energy raises the temperature of a calorimeter containing 45.0 g of waterfrom 23.0°C…

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: Given that 158.05 g of solution increased in temperature by 4.82 "C. how much heat was gained by the…

A: Given that: Mass of solution=158.05grams Change in temperature=4.82°C Specific heat of…

Q: When 0.215 g of sodium metal is added to an excess of hydrochloric acid, 2230 J of heat are…

A: Enthalpy is a thermodynamic property which is equal to the heat content of the system.

Q: When 0.361 g of sodium metal is added to an excess of hydrochloric acid, 3750 J of heat are…

A: The given reaction is ,                   2 Na  (s)  +  2 HCl (aq) ---->  2 NaCl (aq)   +  H2 (g)…

Q: When 0.670 g of sodium metal is added to an excess of hydrochloric acid, 6970 J of heat are…

A: moles= mass/molar mass 2 Na(s) + 2 HCl(aq)-----> 2 NaCl(aq) + H2(g)                  Or  Na(s) +…

Q: You add some of the white crystals to a small test tube filled with water. The water in the test…

A: This can be calculated by specifi heat formula, CP = (dH/dT)P dH = Enthalpy change  dT = Temperature…

Q: With a platinum catalyst, ammonia will burn in oxygen to give nitric oxide, NO. 4NH3 (9) + 502(g) →…

A: Answer: reaction for whom enthalpy change is given is: 4NH3(g)+5O2(g)→4NO(g)+6H2O(g) Now the…

Q: a. Hydrogen cyanide is used in the manufacture of clear plastics such as Lucite and Plexiglas. It is…

A:

Q: Tin is widely used for plating steel cans used as food containers, in metals used for bearings, and…

A: Specific heat of a material is the amount of energy we must provide to increase it temperature by 1…

Q: A chemist dissolved an 10.8-g sample of KOH in 100.0 grams of water in a coffee cup calorimeter.…

A: Here we are required to find the enthalpy of solution of KOH in the unit of kJ/mol

Q: q) + HCI (aq) → H20 (1) + NacI (aq) 6.13 kJ/mol ny kilojoules of heat are produced when 1000 mL of…

A: The question is based on the concept of chemical thermodynamics. we have to calculate heat produced…

Q: 4. The specific heat of water is quite high at 4.184 J/gC. Explain how life on this planet would be…

A: The amount of heat required to increase the temperature of the 1 g of the substance by 1 degree is…

Q: 3. When 0.118 g of Zn(s) is combined with enough HCl to make 52.3 mL of solution in a coffee-cup…

A:

Q: When 10.0 g KOH is dissolved in 100.0 g of water in a coffee-cup calorimeter, the temperature rises…

A:

Q: A 8.27 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: ∆H = 45.06kj/mol

Q: When 13.99 mL of HCl of unknown concentration (but less than that of the base) are reacted with…

A: Given data: Volume of HCl used = 13.99 ml Volume of NaOH used = 15 mL Concentration of NaOH = 3.172…

Q: Soapstone is a type of metamorphic rock that is used as an ice alternative to cool drinks without…

A:

Q: Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or…

A: Mass of KOH = 10.8 g Moles of KOH = Mass / Molar mass = 10.8g / 56 g/mol = 0.193 mol Mass of…

Q: 2. Carbon tetrachloride can be formed by reacting chlorine with methane: CH4 + 2 Cl2 → CCL4 + 2 H2…

A: CH4 + 2Cl2-----> CCl4 +2H2 ∆Hof (CH4) = -75 kJ/mol ∆Hof (CCl4 ) = -135 kJ/mol

Q: When 0.805 g of sodium metal is added to an excess of hydrochloric acid, 8370 J of heat are…

A: Exothermic reaction :- A reaction in which heat energy is produced when it takes place is known as…

Q: The enthalpy changes when a strong acid is neutralized by strong base is -56.1 kJ/mol. If 135 mL of…

A: We'll calculate the maximum temperature reached by the resulting solution. 135 ml of 0.250M HI and…

Q: Methane is a major component of natural gas. Methane burns in air, releasing approximately 890 kJ of…

A: 1 mole of methane releases 890 kJ 0.521 mole of methane releases ___ kJ Heat released = 0.521 mol x…

Q: When 0.215 g of sodium metal is added to an excess of hydrochloric acid, 2230 J of heat are…

A:

Q: When 7.474 g of NaCl is dissolved in 120 grams of water at 22 oC in a coffee-cup calorimeter, 500J…

A: we are given that NaCl dissolves in water heat absorbed by the solution=500J so heat released by the…

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.