Sunday
February 7, 2016

# Search: CAL

Number of results: 1,210

Integrated Physics and Chemistry
The specific heat capacity of copper is 0.09 cal/g°C. How much energy is needed to flow into a 10-gram sample to change its temperature from 20°C to 21°C? A)0.009 cal B)0.09 cal C)0.9 cal D)9 cal
April 21, 2011 by Ashley!!

math
80 cal/g x 5 g 400g/cal or 400 cal/g not sure can any one help Neither. 80 cal/g x 5g = 400 cal. The unit g cancels to leave calories. x2+2x-15
December 11, 2006 by rena

Chemistry/Physics
How much heat is required to raise the temperature of 100 g of lead 20 degrees C? The specific heat of lead is 0.0305 cal/g K. A) 51 cal B) 61 cal C) 71 cal D) 81 cal
July 13, 2015 by Domino

Physics
A 150 gram golden (specific heat 0.03 cal/gram^0 C) spoon at 20^0C is placed in a cup of tea at 100^0C. The amount of heat which the spoon absorbs from the tea which is necessary to reach spoon's tempature 47^0C is a)360.4 Cal b)121.5 Cal c)78.24 Cal d)15.08 Cal e)157.5 Cal
March 5, 2015 by Vashti

Science
A 50 gram ice cube is cooled to -10oC in the freezer. How many calories of heat are required to heat it until it becomes liquid water at 20oC? (The specific heat of ice is 0.5 cal/goC.) Answer A) 1250 cal. B) 4000 cal. C) 5000 cal. D) 5250 cal. Can someone please help me solve...
September 26, 2011 by Anonymous

physics
A 50 gram ice cube is cooled to -10oC in the freezer. How many calories of heat are required to heat it until it becomes liquid water at 20oC? (The specific heat of ice is 0.5 cal/goC.) Answer A) 1250 cal. B) 4000 cal. C) 5000 cal. D) 5250 cal. Can someone please help me solve...
September 26, 2011 by Allison

Chemistry
How much heat is released when 10 g of steam at 100°C is cooled to 10 g of liquid water at 100°C? I am working on a practice test and the answer is not in the back of the book. Can some one help me. 1. 10 cal 2. 5400 cal 3. 800 cal 4. 6200 cal
November 10, 2011 by nan

chemistry
How many calories are required to heat 25.0 g of platinum from 24.5 °C to 75°C (specific heat of platinum = 0.139 J/gK)? 1. 47 cal 2. 42 cal 3. 48 cal 4. 20 cal 5. 80 cal Thank you.
November 22, 2009 by Danny

Science -- Check my Answer Plz
How much heat (calories) must be applied to a 100 mL beaker filled with boiling water in order to vaporize the water? ** A) 540 cal ** B) 540 * 10^4 cal C) 800 cal D) 8000 cal Is A correct? or cud it be B.?
January 4, 2016 by Saisir le Jour

Chemistry
Person consumes 1995 Calories/day. How many is this in kJ My answer/work: 1995 x 1000 cal/1 Cal x 4.184J/1 cal x 1 kj/1000J= 8347.08kj Let me know if I did anything wrong and give me a hint on what I can do to fix it thank you :)
January 26, 2015 by Clare

Physics
How much heat is required to melt 50 g of mercury at -45 degrees celsius to 425 degrees celsius. (melting point=-38.degree-c, specific heat=0.03325 cal/g-degree c for solid mercury, .2988 cal/g-c degree c for liquid mercury and .2486 cal/g-c degree for gaseous mercury, heat of...
February 27, 2012 by Abby

Physics
How much heat is required to melt 50 g of mercury at -45 degrees celsius to 425 degrees celsius. (melting point=-38.degree-c, specific heat=0.03325 cal/g-degree c for solid mercury, .2988 cal/g-c degree c for liquid mercury and .2486 cal/g-c degree for gaseous mercury, heat ...
February 27, 2012 by Abby

Physics
How much heat is required to melt 50 g of mercury at -45 degrees celsius to 425 degrees celsius. (melting point=-38.degree-c, specific heat=0.03325 cal/g-degree c for solid mercury, .2988 cal/g-c degree c for liquid mercury and .2486 cal/g-c degree for gaseous mercury, heat ...
February 27, 2012 by Abby

Chem
How do you convert? (a) 4.50 Cal to calories (b) 600.0 Cal to kilojoules (c) 1.000 J to calories (d) 50.0 Cal to joules
October 16, 2011 by Miranda

science
an aluminium container of mass 100g contains 200 g of ice at -20'c heat is added to the system at the rate of 100 cal/sec. what will be the final tmperature of the mixture after 4 min? given:specific heat of ice:0.5 cal/gm'c ,latent heat of fusion:80 cal/gm and specific heat ...
March 17, 2011 by anu

Physics
A 200g block of copper at 90o C is dropped into 400g of water at 27o C contained in a 300g glass beaker at 27o C. What is the final equilibrium temperature of the mixture? cCu = 0.0924 cal/g°C cglass = 0.2 cal/g°C cwater = 1 cal/g°C
November 30, 2013 by Angie

Chemistry
What quantity of heat is necessary to convert 50.0 g of ice at 0.0 C into steam 100,0 C? The heat of fusion is 80.0 cal/g, the heat of vaporization is 540 cal/g, and the specific heat of water is 1.00 cal/gC.
March 27, 2012 by Jill

math
if a person weighing 150 pounds runs in place for 15 minutes and the reg cal burned is 650 cal /hr Since 15 minutes is 1/4 of an hour, multiply 650 by 1/4. 162.5 cal/hr
March 16, 2007 by patti help

Chemistry
If you have the q cal of a reaction, then obviously you can convert to q chem by negating your q cal. But what if you need to get to q rxn (q of the reaction)? Also, my textbook is claiming that the q rxn = -(q sol + q cal). How does that figure into this?
April 1, 2010 by Fred

Chemistry
Calculate S (measure of total entropy) for the following reaction at 25C and 1atm, and tell whether the entropy is increasing or decreasing. C3H8(g)+5O2(g)-> 3CO2(g)+4H2O(g) S of C3H8=64.5 cal/(mol*K) S of O2= 49 cal/(mol*K) S of CO2= 51.1 cal/(mol*K) S of H2O= 45.1 cal/(...
November 16, 2009 by Christina

Chemistry Help!!!!
Calculate S (measure of total entropy) for the following reaction at 25C and 1atm, and tell whether the entropy is increasing or decreasing. C3H8(g)+5O2(g)-> 3CO2(g)+4H2O(g) S of C3H8=64.5 cal/(mol*K) S of O2= 49 cal/(mol*K) S of CO2= 51.1 cal/(mol*K) S of H2O= 45.1 cal/(...
November 16, 2009 by Christina

Chemistry
Calculate S (measure of total entropy) for the following reaction at 25C and 1atm, and tell whether the entropy is increasing or decreasing. C3H8(g)+5O2(g)-> 3CO2(g)+4H2O(g) S of C3H8=64.5 cal/(mol*K) S of O2= 49 cal/(mol*K) S of CO2= 51.1 cal/(mol*K) S of H2O= 45.1 cal/(...
November 16, 2009 by Christina

Physics
What mass of ice at 0 oC must you add to 0.5 kg of water at 22 oC to bring the final temperature of the water to 5 oC? (cice = cvapor = 0.5 cliq , cliq = 1 cal/(g oC), hfusion = 80 cal/g, hvaporiztion = 540 cal/g) A. 5.9 B.71 C 100 D106 E1.7
July 25, 2012 by Carrie

college (Physical Science/Physics)
I am having difficulty with this equation. I have been working with it for several weeks! Please Help. the equation is this: solve for Lf Lf=[(CwMw+CsMs+CcMc)(To-Tf)//Mi-CwTf values Cw=1.00; Mw=143.4; Cs=0.11; Ms=30.0; Cc=0.22; Mc=57.7;To=23.9; Tf=14.2;Mi=16.7 I keep comming ...
April 17, 2009 by Jennifer

Calculus
Jill burns 100 calories per hour while sleep and 300 calories per hour while walking and 200 calories per hour at work. If in a typical day Jill spends 7 hours sleeping, 2 hours walking and 6 hours working, what is her average calories burned for those hours? 166.67 cal/hr 200...
May 22, 2014 by bex

physics
how much heat is required to vaporize 7 grams of ice initially at 0 degrees celsius when the latent fusion of ice is 80 cal/g, the vaporization of water is 540 cal/g, and the specific heat of water is 1 cal/(g x C)?
February 19, 2010 by elisabeth

PHYSICS!!
A Mountain bar has a mass of 6.7×10−2 kg and a calorie rating of 270 cal. What speed would this candy bar have if its kinetic energy were equal to its metabolic energy? [Note: The nutritional calorie, 1 Cal , is equivalent to 1000 calories (1000 Cal ) as defined in ...
October 16, 2012 by RoCu

Science -- Explaination on Heat Capacity?
I need some1 to explain heat capacity to me because the way my lesson is teaching it is EXTREMELY confusing!! A simple explanation would be nice! Dumb it down 4 a 7th grader!!!!! If you could use the following question in the explanation, that would be great because this is y ...
January 4, 2016 by Sairsir le Jour

math
How many hours of jogging at 5 1/2mi/h would be needed for a 200 pound person to lose 5 pounds and it takes 3500 cal for one pound 740 cal/h for jogging 5 1/2 mi/h Please post your answer, and we'll be glad to critique it. 750x3500 740x3500=2590 No, not right. If it takes ...
March 16, 2007 by patti help

Biotech
The dynamic method is used to measure kLa in a fermentor operated at 30degC. Data for dissolved-oxygen concentration as a function of time during the re-oxygenation step is given (table with time (s) and CAL (% air saturation)). The equilibrium concentration of oxygen in the ...
October 30, 2012 by MGob

Chemistry
Calculate the heat released when 10.0 g of water at 25.0°C cools to ice at 0.0°C. The specific heat of water is 1.00 cal/(g × °C); the heat of fusion is 80.0 cal/g; and the heat of vaporization is 540.0 cal/g.
April 17, 2010 by helpanderson

chemistry
A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the average adult burns or expends about 0.45 Cal/h for every pound of body weight. How many Calories would a 135 lb person burn during 7 hours of sleep? (Note that 1 Cal = 1 kcal.)

science
A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the average adult burns or expends about 0.45 Cal/h for every pound of body weight. How many Calories would a 126 lb person burn during 7 hours of sleep? (Note that 1 Cal = 1 kcal.)
February 10, 2011 by Renee

physics
A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the average adult burns or expends about 0.45 Cal/h for every pound of body weight. How many Calories would a 196 lb person burn during 7 hours of sleep? (Note that 1 Cal = 1 kcal.)
April 28, 2011 by gabby

science
A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the average adult burns or expends about 0.45 Cal/h for every pound of body weight. How many Calories would a 170 lb person burn during 10 hours of sleep? (Note that 1 Cal = 1 kcal.)
October 5, 2011 by Anonymous

PHYSICAL SCIENCE
A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the average adult burns or expends about 0.45 Cal/h for every pound of body weight. How many Calories would a 179 lb person burn during 10 hours of sleep? (Note that 1 Cal = 1 kcal.)
February 27, 2014 by ADRIEANNE GREEN

Physics
A 100-g aluminum calorimeter contains a mixture of 40 g of ice and 200 g of water at equilibrium. A copper cylinder of mass 300 g is heated to 350 C and then dropped into the calorimeter. What is the final temperature of the calorimeter and its contents if no heat is lost to ...
December 2, 2010 by Calvin

Physcial Science
Hey There, I have 4 questions that I am totally stumped on... Can anyone help? A 200-gram chunk of stuff rises in temperature by 3oC when you input 1200 calories of heat. What is its specific heat capacity? Answers A)50 cal/goC. B) 2 cal/goC. C) 5 cal/goC. D) 0.02 cal/goC. You...
September 23, 2011 by Anonymous

Physcial Science
Hey There, I have 4 questions that I am totally stumped on... Can anyone help? A 200-gram chunk of stuff rises in temperature by 3oC when you input 1200 calories of heat. What is its specific heat capacity? Answers A)50 cal/goC. B) 2 cal/goC. C) 5 cal/goC. D) 0.02 cal/goC. You...
September 23, 2011 by Anonymous

Physcial Science
Hey There, I have 4 questions that I am totally stumped on... Can anyone help? A 200-gram chunk of stuff rises in temperature by 3oC when you input 1200 calories of heat. What is its specific heat capacity? Answers A)50 cal/goC. B) 2 cal/goC. C) 5 cal/goC. D) 0.02 cal/goC. You...
September 23, 2011 by Anonymous

Math
Where is it that tells that cal/g = cal ? And are we talking about calories and grams? What can I say? I am a right brained person :-) Thanks
August 2, 2008 by Julie

Enviromental Science
How many cal and K cal are required to evaporate one gram of water at 100 degrees Celcius?
September 26, 2010 by Cindy

chemistry
If the heat of fusion for ethyl alcohol is 26 cal/g, how many grams must freeze to release 780 cal?
December 5, 2010 by jacee

physics
How much energy is required to melt 0.1 kg of water (hfusion = 80 cal/g, hvaporiztion = 540 cal/g) at 0oC.
July 31, 2012 by Carrie

CHEMISTRY
The grams of protein in 1 cup of soup that has 110 Cal{\rm Cal} with 7 g{\rm g} of fat and 9 g{\rm g} of carbohydrate. Express your answer using one significant figure.
February 1, 2014 by LISA

Math
chart ingredients proteins------------4 gram per cal carb----------------4 gram per cal fat------------------9 gram per cal A banana has 27 grams of carb. it has a total of 121 calories. How many of its calories come from sources other than carbs?
December 29, 2012 by Ryan

chemistry
Use the thermochemical equations: 1/2 H2(g)+1/2 I2(g) ...............> HI(g) delta H = -1.1 k cal 1/2 H2(g).......> H2 (g) delta H = -104.2 k cal 1/2 I2 (g)..............> I (g) delta H = +18.1 k cal To present for the formation of hydrogen iodide gas from gaseous ...
November 16, 2010 by miss

chem/ health
if it takes alcohol 185 cal to evaporate and water 552 cal to evaporate, which is better to use to reduce a fever?
September 22, 2008 by heather

physical science
A sample of silver at 20.0 °C is heated to 100 °C when 1000 cal is added. What is the mass of the silver? (csilver = 0.056 cal/deg-gm)
March 16, 2010 by Anonymous

chemistry
How much heat (in cal) is necessary to heat 27.0 mL of octane (s= 0.526 cal/g ®C ; d = o.703 g/mL ) from 50.6 ®C to 67.2 ®C? I understand the Delta T is = 16.6®C But I don’t know what d stands for (density) or how to apply to the formula.
February 3, 2013 by Joseph

Chemistry
convert 175f to c convert 325f to k covnert 575 cal to J canvert 23 Cal to J
February 18, 2008 by lizzie

Chemistry
Daily diet consists of 120 g of carbohydrates, 65 g of fat, and 43 g of protein. How many calories does this diet provide daily? My work/answers: 120 g x 4 g/calories of carbs = 48 g/cal 65 g x 9 g/calories of fats= 585 g/cal 43 g x 4 g/calories of protiens = 172 g/cal Total: ...
January 26, 2015 by Clare

Chemistry
Ice has negative caloric count. How much energy, in each of the following units, does your body lose from melting 175g of ice? Express your answers in J, kJ, cal, Cal
November 16, 2015 by Nicole

Moorpark
Ice has negative caloric content. How much energy, in each of the following units, does your body lose from melting 175g of ice? Express your answer in J, kJ, cal, Cal
November 16, 2015 by Nicole

chemistry
A calorimeter consists of an interior metal bomb (container) surrounded by 2.22 kg of water all contained within an insulated exterior wall. A sample of propane, C3H8, weighing 6.89g, was burned in the calorimeter with excess oxygen. As a result of the combustion, the interior...
July 16, 2008 by Anonymous

Physics
Please help! Suppose that a 400 gram copper object (specific heat 0.092 cal/g/degrees Celsius) receives 900 cal. of heat. What is the temperature change? Explain your reasoning. Thanks
March 2, 2011 by A

math
write an expression using n as the variable for this problem. each day julia rides her bike to and from work. she lives 9 blocks from work and burns 13 cal. per block. how many cal. does she burn in n days

Physics
Please help! Suppose that a 400 gram copper object (specific heat 0.092 cal/g/degrees Celsius) receives 900 cal. of heat. What is the temperature change? Explain your reasoning. Do not use algebra Thanks!
March 1, 2011 by A

Chemistry
A 5 oz carrot is burned in a calorimeter containing 10.0 lb of water. The water heats up from 20.5 oC to 22.8 oC. How many Calories are in the 5 oz carrot? Round to correct sig. fig. 1 Cal = 1000 cal.
September 11, 2014 by Izzy

science
calculate the heat f iodine vapours & solid are 0.031 & 0.055 cal/g respectively. If heat of sublimation f iodine is 24 cal/ g at 200°C .wat is its value at 260°C??
November 20, 2015 by sapna

Chem/Bio/Nutrition
Why is the experimental Cal/g value usually less than the Cal/g value calculated from the Information on the nutrition label?
January 18, 2009 by Lena

physics
A 920 g empty iron kettle is put on a stove. How much heat in joules must it absorb to raise its temperature form 15.0° C to 93.0° C? (The specific heat for iron is 113 cal/kg · °C.)(1 cal = 4.184 J)
January 22, 2013 by julie

Chemistry
A compound is characterized by the following constants: Heat of fusion = 75 cal/g Heat of vaporization = 20 cal/g The heat of deposition for the same compound is
January 23, 2012 by Anonymous

univ. physics
A heat pump has a coefficient of performance of 4.5. If the heat pump absorbs 46.1 cal of heat from the cold outdoors in each cycle, what is the amount of heat expelled to the warm indoors? (in cal)
December 13, 2012 by kate

physics
A heat pump has a coefficient of performance of 4.5. If the heat pump absorbs 46.1 cal of heat from the cold outdoors in each cycle, what is the amount of heat expelled to the warm indoors? (in cal) tried everything but got nothing.
December 17, 2012 by jimmy

chemistry
If 125 cal of heat is applied to a 60.0-g piece of copper at 23.0∘C , what will the final temperature be? The specific heat of copper is 0.0920 cal/(g⋅∘C) .
September 15, 2014 by gabriel

Heat Production (Animal Phy)
Assume that an animal consumes 200 ml of O2 in the course of metabolizing 250 mg of food. Determine the probable kind of food the animal has metabolized. How much heat has been produced? I determined the food type by dividing 200 by 250 to get 0.8 ml O2/mg, which is close to ...
January 19, 2012 by CM

chemistry
The specific heat of ethanol is 0.59 cal/g Celsius If one adds 450 cal of heat to 37 g of ethanol at 20 celsius what would the final temp be
March 16, 2014 by Anonymous

Math
Cal had 6 comic books. After he gave 1 comic book to each of his cousins, he had none left. How many cousins does Cal have?
September 27, 2014 by Bryce

pre cal
does anyone take pre-cal online ?
April 16, 2012 by Mecie

Chemistry
Ethylene glycol has a specific heat of 0.578 cal/(g×°C). If 23.2 g of ethylene glycol absorbs 75.6 cal of heat energy, what will the temperature increase be?
November 29, 2011 by Chemistry Chick

chemistry
Assume that 64.0 cal of heat is applied to a 14 g sample of sulfur at 16°C. What is the final temperature of the sample if the specific heat of sulfur is 0.175 cal/(g·°C)?
January 17, 2012 by betty

Chemistry
Assume that 64.0 cal of heat is applied to a 14 g sample of sulfur at 16°C. What is the final temperature of the sample if the specific heat of sulfur is 0.175 cal/(g·°C)?
January 24, 2012 by Suze

sscc
Assume that 41.0 cal of heat is applied to a 30. g sample of sulfur at 16°C. What is the final temperature of the sample if the specific heat of sulfur is 0.175 cal/(g·°C)?
October 12, 2012 by marie

physics
A 68 student consumes 2500 Cal each day and stays the same weight. One day, he eats 3500 Cal and, wanting to keep from gaining weight, decides to "work off" the excess by jumping up and down. With each jump, he accelerates to a speed of 3.4 before leaving the ground.
November 28, 2011 by ekaterina

chemistry
A mass of 7 kg of water is raised from 8 degrees C to the boiling point 100 degrees C. How much heat is required? The specific heat of water is 1000 cal/kg · degrees C. Answer in units of cal

chem
A mass of 7 kg of water is raised from 8 degrees C to the boiling point 100 degrees C. How much heat is required? The specific heat of water is 1000 cal/kg · degrees C. Answer in units of cal I got 644000, is that right?
April 25, 2012 by luke

Science -- Check my Answer Plz (again)
A beaker contains 50.0 mL of water at 90.0°C. How many calories must be added to raise the temperature of the water to its boiling point (100°C)? A) 50.0 cal B) 1.00*10^3 C) 100.0 cal D) 5.00*10^2 I think the answer is B, but i also think im wrong...
January 4, 2016 by Saisir le Jour

physical science
If 500 kg of water at 200 degrees F is poured into a lake that is 50.0 degrees F, how much heat is added to the lake? Joules added = mass x specific heat water x delta T. mass = 500 kg Look up specific heat water in cal/kg delt T is 200. Solve for Joules added. Isn't the ...
June 22, 2007 by jan

Chemistry
Assume that 57.0 cal of heat is applied to a 28g sample of sulfur at 27 degrees C. What is the final temperature of the sample if the specific heat of sulfur is 0.175 cal/g degrees C?
December 9, 2012 by Marie

physics
A piece of metal of mass 112g is heated 100 degree C.,and dropped into a copper calorimeter of mass 40g containing 200g of water at 16 derreC. Neglecting the heat loss, the specific het of the meatal is nearly,if the equilibrium temperature reached is 24.1degree C, OPTIONS : 1...
April 28, 2012 by kala

chemistry
how do I convert kcal/mol to kJ/mol? how do I convert cal/mol to kJ/mol? So the question really is converting calories to joules.. 1 cal= 4.184 joules
January 21, 2007 by Susan

Chemistry
Imagine that a hypothetical life form is discovered on our moon and transported to Earth. On a hot day, this life form begins to sweat, and it is determined that the heat of vaporization of its sweat is 155 cal/g. The scientist observing the extraterrestrial life form also ...
January 25, 2013 by Ryan

chemistry
I'm not sure how to solve this: If 125 cal of heat is applied to a 60.0-g piece of copper at 20.0∘C , what will the final temperature be? The specific heat of copper is 0.0920 cal/(g⋅∘C). Express the final temperature numerically in degrees Celsius Thanks
January 29, 2014 by mysterychicken

Math
If a person cross-country skis for 35 minutes, how many calories will be burned? 700 calories are burned in 1 hour. I do not know how to set it up? set up a ratio cal/35 = 700/60 cross-multiply and solve for 'cal' you should get appr. 408
May 25, 2007 by Kerri

Chemistry
Determine ∆G° (in kcal) for the reaction CCl4(ℓ) + H2(g) HCl(g) + CHCl3(ℓ) at 25 °C under standard conditions. The following information is available: At 25 °C C(graphite) + 2Cl2(g) CCl4(ℓ) ∆S° = -56.23 cal K-1 C(graphite) + Cl2(g) + H2(g) CHCl3...
November 4, 2015 by Anonymous

physics
A 27 g ice cube at −25◦C is dropped into a container of water at 0◦C. How much water freezes onto the ice? The specific heat of ice is 0.5 cal/g · ◦ C and its heat of fusion of is 80 cal/g. Answer in units of g.
February 9, 2015 by Ion

su
A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal (remember, 1 Calorie = 1 kilocalorie). When sleeping, the average adult burns or expends about 0.45 Cal/h for every pound of body weight. How long, in days, would the person have to sleep ...
October 26, 2012 by fat

chemistry
On a brisk walk, a person burns about 325 Cal/h. A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. If the brisk walk were done at 2.1 mi/h, how far would the student have to walk to burn off the pound of body fat?

Chemistry
A chemist mixes 100ml of H2O at 30 degrees Celsius and 56.0g of CaOin a calorimeter. The following reaction occurs" CaO(s) +H2O(l)--->Ca(OH)2(s) ΔH= -16.0 kcal/mol The heat capacity Ca(OH)2(s) is 19.2 cal/mol*degreeCelsius and the heat of vaporization of water is 540 ...
March 27, 2011 by Kim

chemistry
Problem#8: Metabolism of alcohol (ethanol, C2H5OH) by the body takes place according to the reaction: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l) ΔHo = -1367 kJ Determine the number of “food calories” (Cal) supplied by the alcohol in a 12-oz (355-mL) bottle of “Molson ...
October 21, 2010 by Sarah

Physics
One liter of water at 47 degree C is used to make iced tea. How much ice at 0 degree C must be added to lower the temperature of the tea to 12 degree C? The specific heat of water is 1 cal/g · degree C and latent heat of ice is 79.7 cal/g.
January 19, 2011 by rukia

chemistry
Can somebody please help me with this question? That'd be great. Thanks! Determine the amount of heat needed in the following: the number of calories to heat 25 grams of water from 22 degrees celcius to 44 degrees celcius. Q= m c deltaTemp = 25g*1cal/gC*(44-22)C =25*22 ...
October 4, 2006 by Pyrgus

Physics
A  serving  of  cereal  has  800 cal  (1 cal = .239 J).  How  far can  you  walk  with  this  energy?  Is  the  elapsed  time ...
April 15, 2009 by Kyle

Chemistry
A researcher studying the nutritional value of a new candy places a 4.90 gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.75 degrees Celsius. If the heat capacity of the calorimeter is 29.50 kJ - K^-1, ...
February 8, 2012 by Justine

Physics
Trying to beat the heat of summer, a physics grad student went to the local toy store and purchased a child's plastic swimming pool. Upon returning home, he filled it with 154 liters of water at 25°C. Realizing that the water would probably not be cool enough, he threw ice ...
November 20, 2010 by BG

Chemistry
Need help with these conversions please 0.08206 Latm/molxK to cal/molxK ? 0.08206 Latm/molxK to J/molxK ? I will be happy to critique your work. You have the conversion coefficents. 0.08206 X 101.3 = 8.31 cal per molK 0.08206 x 4.184 = .343 J per molK
January 21, 2007 by Paul

Math
Customer Cal is one of Danny's regulars.He ate at the diner on Wednesday.He ordered the daily specialy,macaroni and cheese, for $2.95.He also ordered a milk shake that cost$1.25 and a piece of pie that cost $.95. Cal left the diner with$18.53 in his wallet.How much money did...
May 1, 2012 by Colton

physics
A stick is a connection of two same -diameter metal rod 5 cm , and a length of both stick is 0,6m. The thermal conductivity of the first rod 92 cal /s.m.°C , and the second stick 50 cal / s.m.°C . The temperature at the free end of the first rod 100 °C and the free end of the ...
January 18, 2016 by Anonymous

health
Can someone help explain these directions?? For the energy-yielding nutrients, please convert the amount (grams) consumed to calories.  This can be done by multiplying the amount of that nutrient consumed by the respective number of calories it provides (protein and ...
June 20, 2014 by Anonymous

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