What is the total molar concentration of ions in each of the following solutions, assuming complete dissociation? (a) A 0.750 M solution of K2CO3 (b) A 0.355 M solution of AlCl3

Q: Use the References to access important values if needed for this question. In the laboratory a…

A: Given Mass = 13.9 g Temperature difference = 40-24.3 = 15.7°C Heat (Q)  = 28.2 J

Q: Perform the calculation and report the answer using the proper number of significant figures. Make…

A: The significant figure refers to particular digits in a number. According to the measurement rule,…

Q: 6. Rand the following photons in terms of decreasing energy: IR (v= 6.5 x 1013 Hz), microwave (v =…

A: Since you have specifically asked for question number 6 to be done, we will solve that one for you.…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.97 kg sample…

A: We know that heat involved and specific heat capacity of a system are related by the equation- ∆H =…

Q: Calculate the kinetic energy of a 311. kg car moving at a speed of 10.8 Round your answer to 3…

A: kinetic energy of an object is defined as the energy that the object possesses due to its motion.

Q: Calculate the kinetic energy of a 235. mg raindrop moving at a speed of 6.9 Round your answer to 2…

A: mass of raindrop = 235 mg =235×10-3 gspeed = 6.9 ms

Q: A 3,000 kg car accelerates from 4 m/s to a velocity of 11 m/s, what is the change in kinetic energy…

A: The mass of the car is .The initial velocity of the car is .The final velocity of the car is .To…

Q: After sitting on a shelf for a while, a can of soda at a room temperature (69°F) s placed inside a…

A: Given: Ta = the temperature surrounding the object = temp. of refrigerator = 37oF To = initial…

Q: What is the heat in kJ required to raise 1,973 g water from 27°C to 79°C? The specific heat capacity…

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Q: 4. An x-ray has a wavelength of 1.3 x 10-1º. Calculate the energy (in J) of one photon of this…

A:

Q: What is the specific heat capacity of the metal?

A:

Q: kJ If an athlete expends 3760. how long does she have to play to work off 1.00 lb of body fat? Note…

A: Fat Calories per pound = 4.1 x 103 kCal/lb  Therefore, Calories in the fats of athlete = Amount of…

Q: If a battery releases 566.8 J of energy and 201 J are used for work, how much energy is released as…

A: Given : Total energy released by battery = 566.8 J Energy used for work = 201 J

Q: Calculate the amount of heat needed to boil 39.6 g of hexane (C,H4), beginning from a temperature of…

A: Given - - > m = 39.6 g T1 = 47.6 °C T2 = 68.72°C ( final temperature because the hexane has to…

Q: Calculate the amount of heat needed to boil 186. g of octane (C8H18), beginning from a temperature…

A: Answer:Since, boiling point of octane is 125.60C and melting point of octane is -570C, therefore at…

Q: A sample of silver (cs = 0.235 J/(g-°C)) is heated to 84.92°C and then dropped into 31.53 g of water…

A: Specific heat: Amount of energy required to raise the temperature of water by one degree. We can…

Q: Complete each row of the table below by filling in the missing prefix or missing exponent. J 1 n J…

A:

Q: ? + NC CN Heat -CN CN

A: Diels–Alder reaction is a chemical reaction between a conjugated diene and a substituted alkene,…

Q: A 1,906,906 g car is traveling 0.717 m/s. Calculate the kinetic energy of the car in J. Do not…

A: Mass of car (m) = 1906906 g = 1906.906 kg Velocity (v) = 0.717 m/s

Q: Calculate the amount of heat, in J, required to warm 224 g of sand from 25.0 ºC to 284 ºC.  The…

A:

Q: The specific heat capacity of 304 stainless steel is 0.502 J/g "C. How much energy does it take to…

A: Given :- Mass of stainless steel = 1.375 kg = 1375 gram Specific heat of stainless steel = 0.502…

Q: Calculate the amount of heat required to raise the temperature of 24.2 g of water from 1.3°C to…

A: Thermodynamics is the branch of chemistry that mainly deals with the heat transfer between system…

Q: A container of gas is placed in a freezer at a temperature below the boiling point for the…

A: Given : Gas is condensing at a temperature below its boiling point temperature.

Q: Calculate the amount of heat needed to boil 49.6 g of methanol (CH,OH), beginning from a temperature…

A: Consider the given information is as follows; Mass of methanol = 49.6 g Initial temperature T1 =…

Q: Calculate the amount of heat needed to boil 110. g of benzene (CH), beginning from a temperature of…

A: 110.0 g of benzene C6H6 is started to heat from a temperature of 17.8 °C .We have to calculate the…

Q: In an experiment similar to the one performed in Experiment #3 a student measures the mass of a…

A: Given that at temperature 20°C , Mass of 25 mL graduated cylinder = 63.486 g Mass of 25 mL cylinder…

Q: Calculate the amount of heat needed to boil 44.5 g of hexane (C,H,4), beginning from a temperature…

A:

Q: In the US, nutritional energy is reported in Calories (Cal). One nutritional Calorie is equal to one…

A:

Q: A student dissolves 14.2 g of ammonium chloride (NH4Cl) in 200. g of water in a well-insulated open…

A:

Q: A volume of 80.0 mL of H20 is initially at room temperature (22.00 °C). A chilled steel rod at 2.00…

A: Given : Volume of water = 80.0 mL Initial temperature of water = 22.00 oC Final temperature of water…

Q: Calculate the AE for a process in which a gas compresses from 5.0 L to 0.75 L at a constant pressure…

A: Pressure = 1.65 atm

Q: The specific heat of lead is 0.13 J/g °C. How much heat (in J) is required to raise the temperature…

A: Specific heat capacity of a substance is equal to the amount of heat energy is used to change the…

Q: What is the change in internal energy in joules when a system releases 154 J of heat and does 125 J…

A:

Q: How to properly use significant figures in this case? Ccal = (-ΔHrxn x nLR)/ΔT Ccal = (-55.85…

A:

Q: Decide how the objects in the following table would be listed, if they were listed in order of…

A: Please find your solution below : Kinetic energy is the energy of motion. It is a form of energy…

Q: 85.4 grams of a metal that is at temperature 92.68 °C is placed in 257.4 mL of wate at 19.07 °C. The…

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Q: CHEMISTRY (Please write the complete solution legibly. Choose the correct answer. No long…

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Q: Calculate the amount of heat needed to boil 146. g of water (H,0), beginning from a temperature of…

A: You will need to know the heat of fusion of water.   The molar heat of vapourization for water is…

Q: cy. What is the final temperature of the metal?

A:

Q: A 1,513,679 g car is traveling 0.965 m/s. Calculate the kinetic energy of the car in J, Do not put…

A:

Q: Consider the balanced thermochemical equation given below: 4 NH3(g) + 5 02(g) -* 4 NO(g) + 6 H20(g)…

A:

Q: 1.42 (a) and (b)

A: 1 watt = 1 J/s 1 kWh = 1000 W X 3600 sec = 3600000 J

Q: Calculate the percent difference between x2 and x4 according to the equation below. (Assume x2 to be…

A: Given :  x2 = 100.4 kJ (Assume x2 to be the accepted value) x4 = -100.4 kJ

Q: 110.0 g of iron is heated to 92.7 degrees C and then place in a container of water at 22.3 degrees…

A: we are given that  mass of iron = 110.0g Tinitial = 92.7° Tfinal = 22.3° initial temperature of…

Q: The cooling system in an automobile holds 11.1 x 103 g of ethylene glycol antifreeze. How much…

A: Energy can be defined as the property that can be transferred from one body to another body. We have…