What is the value 685 kJ in units of cal? O 2.87x10° cal O 1.64x105 cal O 0.164 cal O 2.87x10° cal O 6.848x10° cal

Q: cal Cal kWh 225 J 5.38 x 10 2 Cal 8.21 x 105 cal 295 kWh 155 Cal

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Q: How much heat is required to raise the temperature of a 1.15 kg piece of copper metal from 25.0 °C…

A: Given :-  Mass of Copper metal = m = 1.15 kg = 1150 g  Initial temperature of Copper metal = Ti =…

Q: MeO₂C. MeO₂C OMe -OMe 1. NaH, DMF 2. H₂O* No Heat

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Q: A piece of silver releases 202.8 J of heat while cooling 65°C. Calculate the mass of the sample if…

A: Given that, a piece of silver releases 202.8 J of heat while cooling 65 oC temperature. The specific…

Q: The specific heat of gold is 0.129 J/g.oC. What is the molar heat capacity of gold (Au)? 0.129…

A: Since the relationship between the specific heat capacity and molar heat capacity is  Molar heat…

Q: The calorie content of a candy bar is 230. Calories per serving (1 bar). Calculate the specific…

A: The Calorie content of the candy bar is = 230 Calories per bar1 candy bar = 52.7 g1 Calorie = 1000…

Q: C2H4 (g) + H2O (l) → C2H5OH (l) ΔH=? 1.C2H5OH (l) + 3O2 (g) → 2CO2 (g) + 3H2O (l) ΔH = -1367,5 KJ…

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Q: Br CH3OH Heat I

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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: Determine the heat energy gained by a 10.5 g block of iron if its temperature rises from 25.4 °C to…

A: Given that: Mass of iron block = 10.5 g Initial temperature(T1) = 25.4°C Final temperature(T2) =…

Q: Zinc metal reacts with hydrochloric acid according to the following reaction: % Zn (s) + HCI (aq) →…

A: The reaction given is, Given: Mass of Zn reacting = 0.9807 g. Concentration of HCl = 0.250 M Volume…

Q: 3. 50.0 g hydrogen gas is placed in a 2.0 L flask at constant temperature. The flask has a smal hole…

A: At constant temperature and pressure, the volume of gas is directly proportional to the number of…

Q: Exactly 245.3 J will raise the temperature of 10.0 g of a metal from 25.0 °C to 60.0 °C. What is the…

A: 1) Given, mass of metal (m) = 10.0 g Initial temperature (Ti) = 25.0 °C Final temperature (Tf) =…

Q: The specific heat capacity of a substance is defined as the amount of energy needed to increase the…

A: Hey, since there are multiple questions posted, we will answer first question. Thus, first question…

Q: Determine the amount of heat (in kJ) given off when 1.86 x 104 g of NO2 are produced according to…

A: Given: The amount of NO2 produced, m = 1.86×104 g The enthalpy change of the reaction,  ∆H = -114.6…

Q: The next balance takes place in a rigid container. PCl5(g) ⇔ PCl3(g) + Cl2(g)        ΔH=56 kJ…

A: We have been given an equilibrium reaction.Reactants are present on left hand side and products are…

Q: convert 123 J to calories 515 cal 34.2 cal 443 cal 29.4 cal

A: Given  123 J

Q: muny giallis Of CU, are produced per 2.50 x 103 kJ of heat released? 0.0809 g 3.56g 31.3 g 157 g…

A: Since you have posted multiple questions and have mot mentioned which question you want to be…

Q: What amount of heat is required to raise the temperature of 250.0 g of aluminum (Al) by 40°C? The…

A: Given, Change in temperature,∆T = 40°C mass of aluminium, m = 250 g Specific heat of aluminium ,…

Q: 50.0 mL of hot water (49.6 oC) is added to 50.0 mL of cold water (24.7 oC).  Upon mixing the water…

A: Mass of hot water = 50 mL =50g Temperature of hot water = 49.5°C Mass of cold water = 50 mL = 50 g…

Q: 67.0 mL of hot water (45.4 oC) is added to 45.0 mL of cold water (22.3 oC).  Upon mixing the water…

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Q: Define specific heat capacity. the quantity of heat required to raise the temperature of 1 mole of a…

A: specific heat is the property of the substance and is different for different substances

Q: 1. What is the standard enthalpy of formation (AH) of HI given the following chemical equation? X…

A: 2HI(g) ---> H2(g) + I2(s)  ∆H°rxn = -53.0 kJStandard enthalpy of formation of HI (∆H°f(HI)) =…

Q: A substance, X, has the following properties.     SpecificHeat Capacities   Hvap 20. kJ/mol…

A: The energy must be removed in order to convert 250 g of X from its gaseous state to solid is shown…

Q: Part 2 The Haber process produces ammonia (NH3) for the chemical industry from nitrogen (N₂) and…

A: To solve Part 2 and 3.   The dynamic nature of chemical equilibrium was demonstrated in the…

Q: 2116.16 J of energy is equivalent to how many calories?

A: Given :- 2116.16 J of energy  To calculate :- Energy in calorie.

Q: 4.5 KJ to cal

A: Given : Energy = 4.5 KJ  To calculate :- Energy in calories

Q: A substance, X, has the following properties.     SpecificHeat Capacities   Hvap 20. kJ/mol…

A: The energy must be removed in order to convert 250 g of X from its gaseous state to solid is shown…

Q: The specific heat capacity of water is _____.     (g x °C)/1 cal °C/(g x 1 cal) 1 cal/(g x °C) g/(1…

A: The specific heat capacity denoted by Cp is the amount of energy that must be supplied to 1 unit…

Q: When a 45.0 g sample of an alloy at 100.0 °C is dropped into 100.0 g of water at 25.0 °C, the final…

A: We have 45g of  alloy at 100° C, also 100 g of water at 25°C, final temperature as 37°C , we have to…

Q: Determine the amount of heat (in kJ) given off when 2.56 g of NO2 is produced according to the…

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Q: A 0.692 g sample of glucose (C6H1206) is burned in a bomb calorimeter. The temperature of 575g of…

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