Natural gas, or methane, is an important fuel. Combustion of one mole of methane releases 802.3 kilojoules of energy. How much energy does that represent in kilocalories? Group of answer choices 1.92 × 10–1 kcal 1.92 × 102 kcal 3.36 × 103 kcal 1.92 × 105 kcal 3.36 × 106 kcal

Q: A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the…

A: A pound of body fat stores an amount of Chemical Energy equivalent to 3500 Cal. Also, while sleeping…

Q: A 2.9-gg sample of rice is placed in a calorimeter. When the sample is burned, 26kJ is given…

A: The quantities which come across during the scientific studies are named as physical quantities. The…

Q: a sample of octane is burned in a bomb calorimeter containing 1.00 x 10^2 g H2O. If the water temp…

A: The amount of heat absorbed (or released) by fixed amount of a substance to change its temperature…

Q: Conside 'pothetical chemical reaction: A+B → C+D (In this equation A, B, C and D stand for some…

A:

Q: What is AH when 1.40 mol of Sg reacts? Be sure your answer has the correct number of significant…

A: ∆H of the given reaction is = -20. 2 kJ  Given moles of S8 = 1.40 moles

Q: In fertilizer, 15.0 g of urea (NH2 CONH2) is dissolved in 250 mL of water. A temperature change from…

A: Given that,  Amount of urea,  = 15.0 g Volume of water, m= 250 mL  = 250 g * density of water at…

Q: A 2.9-gg sample of rice is placed in a calorimeter. When the sample is burned, 26kJ is given off.…

A: From data mass of sample, m = 2.9 g  heat released, Q = 26kJ  Formula used Energy value = Qm

Q: How many kilocalories are required to produce 2.815 mol of aluminum? Here is the equation for…

A:

Q: cal energy content when eaten 5 1.15 X 10 0 0 kcal 1 85.0 0 kJ 0 188.

A:

Q: During a lab, you and your partner observe the following chemical reaction: P CuSO, + Mg ---> MgSO,…

A: The reactions which results in emission of heat is called Exothermic Reaction.  And those reactions…

Q: A student places a block of hot metal into a coffee cup calorimeter containing 162.2 g of water. The…

A: 162.2 g of water.T1 = 21.3 oCT2 = 37.6 oC

Q: a 0.2500g sample of a pretzel is burned . The heat it gives off is used to heat 50.00g of water from…

A: Amount of heat liberated: It is calculated as,

Q: Classify the chemical changes as endothermic or exothermic. Endothermic Exothermic Answer Bank A…

A: Interpretation -  To classify chemical changes as exothermic and endothermic -      Introduction -…

Q: How many calories are required to increase the temperature of 13g of alcohol from 11 degrees celsius…

A: q = mc∆T Where q = heat required  c = specific heat  ∆T = change in temperature

Q: hen 1.0 gg of gasoline burns, it releases 11 kcal of heat. The density of gasoline is 0.74 g/mLg/mL.…

A: Given : Energy = 11Kcal. Amount of gasoline = 1.0 gallon.

Q: A student performs a calorimetry experiment. The student combines 100. g of 0.40 M HC1(aq) with 100.…

A: Heat absorbed by the particular species = mass × heat capacity × temperature change

Q: a 176 g china serving bowl is warmed 58.3°C when it absorbs 2.0 kcal of heat from a serving of hot…

A:

Q: O Macmillan Learning Perform the conversions between energy units. 8.70 × 10² kJ = 3255 kcal = 5.27…

A: As we know that,1 kJ = 103 J1 kcal = 4.184 kJ1 kcal = 4184 J

Q: A hot tub holds 350.0 liters of water. How much energy, in kilocalories (kcal), would be required…

A: Given : Volume of water = 350.0 L Density of water = 1.000 g/mL = 1.000 Kg/L               (since 1…

Q: 9.69 x 10^6 J = ? Kcal

A: Given :-  energy = 9.69 x 106 J  To convert :-  The above energy in Kcal

Q: Which statement is true about endothermic and exothermic reactions?  Energy is absorbed in an…

A: Exothermic reactions are the reactions in which energy is released from the system to the…

Q: To measure the caloric content of a new breakfast bar, you burn a 2.00 g sample in a calibrated bomb…

A: Given : Mass of breakfast bar = 2.00 g                             Heat capacity of calorimeter =…

Q: 1a. For the following reaction, write how the each of the changes will affect the indicated…

A: Solutions- Here we have to determine the how the each of the changes will affect the indicated…

Q: A student places a block of hot metal into a coffee cup calorimeter containing 168.5 g of water. The…

A:

Q: How many calories are there in a 255 Calorie snack bar? 60.9 none of the above 1.07 x 103 2.55 x 105…

A: Option d is correct. 2.55 *10^5. There are 1000 calories in every Calorie.If you take 255 x 1000…

Q: Carbohydrates serve as a vital source of chemical energy to the human body. Carbohydrates are broken…

A: We have to convert 119 KJ = ? KCal

Q: If calorie raises the temperature of 1ml of water by 1ºC, how many calories are needed to raise the…

A:

Q: How many Joules are there in 43.3 kcal? (1 cal = 4.184 J)

A: The conversion of quantity from one unit system to another unit system is known as unit conversion.…

Q: How much heat is required to raise the temperature of 22.6 g of water from -15 °C to 145 °C? heat:…

A: Given the mass of water is 222.6 gInitial temperature is -15oC.Final temperature is 145oC.How much…

Q: A 2.5 g sample of french fries is placed in a calorimeter with 500.0 g of water at an initial…

A: This problem is based on calorimeter where we need to find out Caloric value of the French…

Q: How many calories are in 1001 kilojoules? (1 cal = 4.184 J) 1 4 7

A: This can be calculated as:

Q: QUESTION 35 AH = +572 kJ for the decomposition of water by the reaction 2H20(1) → 2H2(g) + O2(g).…

A: Decomposition of water is an endoergic reaction.Energy is being absorbed. Mass of one mole of water…

Q: The ionic compound calcium chloride, CaCl2, dissolves very well in water, with a maximum solubility…

A: CaCl2 is composed of one calcium atom and two chlorine atoms which is prepared by various methods,…

Q: A student places a block of hot metal into a coffee cup calorimeter containing 160.5 g of water. The…

A:

Q: A person uses 494.9 kcal of energy to run a race. Convert the energy used for the race to the…

A: In nutritional terms, the calorie with a capital 'C' is actually a kilocalorie. Therefore, 1 Calorie…

Q: A serving of fish contains 47.0 g of protein value of 4.00 kcal/g and fat has 9.10 kcal/ Report…

A:

Q: Indicate whether the statement is true or false.____ 1. Enthalpy changes for an exothermic reaction…

A: Step 1: Enthalpy changes for an exothermic reaction are given a negative sign. The given statement…

Q: A single serving bag of snack chips contains 71.0 Cal. Assuming that all of the energy from eating…

A: Energy is used in every process of body but as per question all the energy is used for heartbeat…

Q: If reacting 3.08 g of chlorine monoxide (ClO), a highly reactive radical, with an excess of ozone…

A: Chlorine oxide reacts with ozone to form chlorine radical and oxygen gas. The equation for the…

Q: The specific heat capacity of gold is 0.13 J/g°C. How many calories of energya needed to warm 0.513…

A: Q= cm∆T Q = energy given m is mass of substance ∆T is change in temperature. c is specific heat