Calorimetry can also be used to determine nutritional Calories, which are actually kilocalories. One (1) nutritional...
Calorimetry can also be used to determine nutritional Calories, which are actually kilocalories. One (1) nutritional Calorie = 1000 calories, and 1 calorie = 4.184 J.
When 1.0 g of a snack cake is combusted in a constant-volume bomb calorimeter with a heat capacity (including its water) of 10.0 kJ/°C, the temperature of the calorimeter rises by 1.88°C. How many nutritional calories (Calories) are in one serving (28 g) of this snack cake?
Enter your answer to three significant figures in units of Calories.
Homework Answers
Energy absorbed by the calorimeter = C * 
T = 10.0 * 1.88 =
18.8 KJ = 18.8 /4.184 * 103 cal = 4.4933 kcal
= 4.4933 nutritional cal
Energy in 28 g of cake = 28 * energy per 1 g of cake = 28 * 4.4933 = 125.8124 Nutritional calories
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Calorimetry can also be used to determine nutritional Calories,
which are actually kilocalories. One (1) nutritional...
A researcher studying the nutritional value of a new candy places a 5.70 gram sample of...
A researcher studying the nutritional value of a new candy places a 5.70 gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.61◦C. If the heat capacity of the calorimeter is 41.70 kJ/K, how many nutritional Calories are there per gram of the candy?Solve: -qrxn= qcalorimeterWhat is the formula for heat (q) for the calorimeter?___________________Did the calorimeter absorb/release heat? Circle your answer.Calculate the energy absorbed by the calorimeter.How many...
Chemistry
(a)(0.5 points) (i) Write the balanced equation for the combustion of 1-hexyne.(1.0 points) (ii) Draw the VSEPR structure of all reactants and products.(1.5 points) (iii) Determine ΔcombH using Table 9.1 in your textbook. (1.0 points) (b) When 1.600 g of 1-hexyne was combusted in a constant volume calorimeter, the temperature increased from 23.00 to 25.35 °C. Determine the heat capacity of the calorimeter. Express your answer in kJ/oC. You can ignore any difference between ΔcombH and ΔcombU (that is, you...
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One tablespoon of peanut butter has a mass of 16.0 g. When it is combusted in...
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can someone please help me solve this lab?
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Lab 9 Heat of Reaction OBJECTIVE: To experimentally determine the heat of reaction for two exothermic...
Lab 9 Heat of Reaction
OBJECTIVE:
To experimentally determine the heat of reaction for two
exothermic reactions.
DISCUSSION:
The heat given off or gained in a reaction is called the heat
of reaction (∆?????????).
A reaction that releases heat is known as an exothermic
reaction; an endothermic reaction
is one that absorbs heat.
The heat of the reaction corresponds to one mole of the
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(a)(0.5 points) (i) Write the balanced equation for the combustion of 1-hexyne.(1.0 points) (ii) Draw the VSEPR structure of all reactants and products.(1.5 points) (iii) Determine ΔcombH using Table 9.1 in your textbook. (1.0 points) (b) When 1.600 g of 1-hexyne was combusted in a constant volume calorimeter, the temperature increased from 23.00 to 25.35 °C. Determine the heat capacity of the calorimeter. Express your answer in kJ/oC. You can ignore any difference between ΔcombH and ΔcombU (that is, you...
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One tablespoon of peanut butter has a mass of 16.0 g. When it is
combusted in a bomb calorimeter with a heat capacity of 103.3 kJ/
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rises from 22.2
C to 25.4
C. Find the food caloric content of peanut butter in Cal/g.
Assume density of water is 1.0 g/mL. The specific heat of water is
4.184 J/gC
Bomb calorimetry is a technique used to determine the enthalpy of combustion, usually in O2, of a chemical species. A known amount of compound is placed inside a fixed volume container that is, in turn, filled with oxygen at a high enough pressure to ensure complete combustion. The fixed-volume container (the 'bomb') is then inserted into a bucket containing a precisely known volume of water. The oxygen and compound are ignited, and the temperature change in the water is recorded....
please help...
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can someone please help me solve this lab?
calorie since it takes 1.00 cal to rai at units for the amount of heat may be The specific heat of water is used to define the value of a calorie since it takes 1 the temperature of 1 gram of water 1°C. The measurement units for the amount converted using the conversion factor: 1 calorie = 4.184 Joules. The specific heats of several substances are shown in Table 1. Notice that...
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To experimentally determine the heat of reaction for two
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DISCUSSION:
The heat given off or gained in a reaction is called the heat
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A reaction that releases heat is known as an exothermic
reaction; an endothermic reaction
is one that absorbs heat.
The heat of the reaction corresponds to one mole of the
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