The specific heat of silicon is 700J/kg/°C, how much energy is needed to raise a 14g of silicon by 30 °C A) 49 KJ B) 49 kcal C) 294 kcal D) 249 KJ TJAL At

Q: 1. The following statements are true EXCEPT: a. The heat of reaction is also known as the enthalpy…

A: As per rules only the first question can be answered: Heat of reaction = heat of formation of…

Q: Perform the conversions between energy units. 411 kJ = 2885 kcal = kJ 6.49 x 106 J = kcal

A: Energy unit conversations.

Q: Joules Using the data below, calculate the heat of dissolution, AHsoln, in units of Assume the…

A: In the given question we have to calculate the Heat of dissolution (∆Hsoln)  first of all, we have…

Q: If 11.96 kJ of heat is given off when 41.9 g of unknown acid condenses from vapor to liquid, what is…

A: Given data : 11.96KJ  Given mass of unknown acid-41.9g Molar mass of unknown mass 49.15g/mol

Q: The boiling point of benzene is 80°C. Which pair of samples will have the same average kinetic…

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Q: A sample of water at 23.9 °C required an input of 2.68 × 104 J of heat to reach its boiling point,…

A: Required heat is calculated by using below formula,

Q: marshmellow 13.60g 114.87a 7.3c mmarshmel marshmellc 15.005a 112.20g 0.3c Kind of Food 13.831g…

A: To solve for heat change for water and can (kcal) and the heat released by food kcal/g

Q: A 0.37 g Cheeto is burned and the heat produced is used to heat 50 grams of water from 22.1 degrees…

A: Mass of Cheeto=0.37 g Mass of water=50 g Initial temperature =22.1°C  Final temperature=34.4°C…

Q: Perform the conversions between energy units. J 558 kJ = kJ 2565 kcal = kcal 8.63 x 106 J =

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Q: Because water has such a hyh specific heat capacity, it heats and cools more slowly than land. How…

A: Water has a high specific heat capacity which means that water needs more energy to raise its…

Q: 24.0 g of metal at 78.3°C is cooled to 12.4°C and produces 194 J of heat. What is the specific heat…

A: Mass of substance M = 24.0 g  Initial temperature = 78.3 °C  Final temperature = 12.4°C  Heat…

Q: Mass of water 5.678 g Ti 2.33 Tf -21.33 a. calculate the heat lost when the mass of water (g)…

A: This problem is based on phase tranfer of matter . Here water transform from water to ice from…

Q: If 14.5 kJ of heat were added to 485 g of liquid water, what would be the increase in temperature?…

A: Concept introduction- Specific heat- It is the amount of heat required to raise the temperature of…

Q: The specific heat of an unknown liquid is 0.32 J/kg K. The density of the liquid is 0.0321 g/ ml. If…

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Q: How many grams of C5H12

A: ∙Given:- mass =1.24kg or 1240g                    T1 Initial temperature=23.6°C…

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

A: Here option 'c' will be correct option. i.e. 67 g of water sample is the most likely to  undergo the…

Q: The change in enthalpy (heat of solution) for ammonium nitrate dissolving in water is 25.7 kJ/mol.…

A: Given,  The change in enthalpy (heat of solution) for ammonium nitrate dissolving in water is 25.7…

Q: Among the equations below, indicate all those that are exothermic. i. HNO3(aq) + KOH(aq) → KNO3(aq)…

A: Concept based on the exothermic reactions and standard enthalpy of formation.

Q: Using the enthalpy change of -1594 kJ, what is the amount of heat absorbed or released when 1.10 L…

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Q: Calculate the heat capacity, in calories per degree, of 28.4 g of lead. Specific heat of lead is…

A: 1- First we will determine the heat capacity in J/°C  We know that,  Heat capacity = [ specific heat…

Q: If 44.8 kJ of heat were added to 166 g of liquid water (specific heat of 4.184 J/g °C) at 18 °C, how…

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Q: How much heat in kcal must be added to 0.47 kg of water at room temperature (20°C) to raise its…

A: Specific heat :- The amount of heat required to rise the temperature of 1 gram or 1 kg of a…

Q: How much heat, in joules and in calories, must be added to a 75.0–g iron block with a specific heat…

A: Heat is the transfer of energy due to the difference in temperature.

Q: A diamond is said to last forever. Many believe this eternal existence is related to its hardness…

A: Diamond is an allotrope of carbon. It is a solid form of carbon with its atoms ordered in a crystal…

Q: If 125 cal of heat is applied to a 60.0-g piece of copper at 24.0 C, what will the final temperature…

A: The amount of heat required to raise the temperature of the sample is obtained by multiplying the…

Q: What quantity of heat energy (in Joules) is required to raise the temperature of 454g of tin from…

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Q: student is asked to determine the heat of solution in J/g for the compound ammonium nitrate…

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Q: Which of the following correctly states the purpose of the Calorimetry experiment? (Experiment 1) To…

A: Applying concept of calorimetry.

Q: f 20. cal of heat is added to 10.0 g each of copper and mercury at 15 °C, what is the fi nal…

A: The amount of heat added to each element Q, Q=20 cal    =20×4.184 J    =83.68 J Specific heat of…

Q: A 50.0g sample of Fe at 100 °C is added to 500.0 mL of water at 35 °C in a perfectly insulated…

A: A 50.0g sample of Fe at 100 °C is added to 500.0 mL of water at 35 °C in a perfectly insulated…

Q: 3. Specific heat is defined as the amount of energy needed to raise the temperature of 1 gram of a…

A: The definition of specific heat has to be given,

Q: A solution is made by mixing 197.3 g of ethanol initially at 10.5°C with 250.0 g of water initially…

A: We know that, according to the law of conservation of heat energy, energy gained or loss by the…

Q: How many joules of heat are absorbed when 1000g of water is heated from 18oC to 85oC? The specific…

A: We have to find how many joules of heat are absorbed when 1000g of water is heated from 18oC to…

Q: How much energy (in Calories, ie. kcal) was produced by burning the Goldfish?  (Specific Heat of…

A: Mass of water = 100.116 g Change in temp. = 5.1°C = 5.1 K Specific Heat Capacity of water = 4.184…

Q: 4) Calcium chloride (CaCl2) emits heat when dissolved in water. CaCl2e) → Ca- 2+ (aq) + 2Cl (aq) ΔΗ.…

A: First of all you need to find the amount of heat required to raise the temperature of water. For…

Q: Using the following data, calculate the standard heat of formation of ICl(g) in kJ/mol:

A: Interpretation: To determine the standard heat of formation of ICl (g)

Q: How much heat (in kJ) would need to be removed to cool 168.3 g of water from 25.60°C to -10.70°C?

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Q: What is the specific heat of a metal that has a mass of 12.9 g, and absorbs 301 cal of heat when the…

A: Specific heat- It is the amount of heat required to raise the temperature of 1g of substance by 10…

Q: 7. Calculate the specific heat of gold if it required 48.0 joules of heat to warm 25.0 grams of gold…

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Q: Combustion reactions are exothermic. The heat of reaction for the combustion of cyclopentane, C;H10,…

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Q: One hour of bicycle racing can require 500-900 kcal of energy, depending on the speed of the race,…

A: Given : Amount of energy required = 650.0 Kcal/hr 1 Kcal = 4.184 KJ Time of cycling = 175 mins  And…

Q: How many joules of heat are required to heat 68 g of lead from 20.4 oC to 74.8 oC?

A: Given, Mass of lead = 68g. Initial temperature = 20.40C. Final temperature = 74.80C.

Q: The specific heat of water is 4.184J/g-°C. How many joules of heat will be  removed from 2.00 g of…

A: Given: Decrease in the temperature of water = 20.0 oC And mass of water = 2.00 g

Q: How much heat, in joules (J), must be added to a 75.0-g iron block with a specific heat of 0.449 J/g…

A: Given: Mass of iron block =75.0 g Specific heat of iron =0.449 J/g oC Initial temperature(T1) =25 oC…

Q: A student is asked to identify an unknown piece of metal. The metal has a mass of 12.34 g. It is…

A: Given data,Mass of metal=12.34gTemperature of metal (Tm)=99.98oCVolume of water=103.25mLDensity of…

Q: Rachel West Section 017 A thermometer placed in a solution undergoing a chemical reaction indicates…

A: This is the case of a reaction under thermodynamic enthalpy change , According to thermodynamic…

Q: A 7.50-g piece of iron at 100.0°C is dropped into 25.0 g of water at 22.0°C. Assuming that the heat…

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Q: For copper, with a Hfus of 209 J/g, how many kilojoules of energy will be absorbed or released when…

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Q: A sample of water is heated from 25 o C to 75 o C. This adds 2.09 X 10 4 J of heat energy into the…

A: The mass of the water is to be calculated

Q: A 40 g sample of water is raised 10 celcius, with water having a specific heat of 4.184 J/g*C, what…

A: