I dont know what to do on my sciense fair?Can you PLEASE HELP ME! how can i make a model of a gas thermometer?
Q. tell me the materials i will need to make one please?show me a graph, analyzing and the conclusion. this project is on a 6th grade level so dont make it too complicated please
Asked by Lisandra C - Sun Feb 24 20:16:58 2008 - - 1 Answers - 0 Comments

A. Hi, I couldn't find the info directly, but there is a book that seems to give a description suitable for kids aged 8 - 12. Good luck!
Answered by Bad Brain Punk - Thu Feb 28 17:51:00 2008

A constant volume gas thermometer has a pressure of 4340 Pa at 32 C. What would the pressure be for -54 C (i
Q. A constant volume gas thermometer has a pressure of 4340 Pa at 32 C. What would the pressure be for -54 C (in Pa)? answer: 3.12 103 i got the answer but i need to know the steps plz help..thanks
Asked by durrani85 - Mon Aug 13 20:40:49 2007 - - 1 Answers - 0 Comments

A. PV/T is a constant (T has to be absolute temperature) Combined Gas Law. V does not change. Therefore P/T must be constant. 32 C = 305K -54 C = 219K P/219 = 4340/305 P = 219 * 4340 / 305 = 3116 Pa = 3.12*10^3 Pa (approx)
Answered by gudspeling - Mon Aug 13 20:47:05 2007

A Celsius thermometer and an absolute thermometer are used to measure the temperature of the same gas sample.?
Q. The readings on the thermometers are respectively Tc and TK? A. Tc is equal to TK B. any of these, depending on the gas temperature C. Tc is smaller than TK D. Tc is larger than TK
Asked by SpiderMan - Sat Mar 10 10:58:35 2007 - - 1 Answers - 0 Comments

A. obviously Tc is less than Tk Tk= Tc + 273.15
Answered by shrek - Sat Mar 10 11:01:31 2007

please help help help me with this,what is the law obeyed by a constant pressure gas thermometer?
Q. please help help help me with this,what is the law obeyed by a constant pressure gas thermometer?
Asked by niyi - Thu Nov 20 03:37:24 2008 - - 2 Answers - 0 Comments

A. The volume occupied by the gas is proportional to the absolute temperature.
Answered by rhsaunders - Fri Nov 21 15:01:41 2008

give ranges of following thermometers: optical pyrometer, thermocouple, constant pressure gas thermometer?
Q. give ranges of following thermometers: optical pyrometer, thermocouple, constant pressure gas thermometer?
Asked by divya_kool18 - Sat Aug 19 07:10:16 2006 - - 2 Answers - 0 Comments

A. the range of thermocouple is (25 to 1750K) optical pyrometer is ( 700 c is the lower end temp.) constant volume gas (3 to 1750K) check the below sites might come handy
Answered by shrek4194 - Sat Aug 19 08:28:49 2006

Will hanging a painting over a gas heater damage it in the long run?
Q. I have a painting which was painted in 1958. Its in good condition, but some spots are cracked a bit. I want to hang it over my gas heater. A digital thermometer reads about 150 degrees on the wall when the heater is at full blast. Will this hurt it in the long run?
Asked by matthiasf - Fri Dec 21 10:16:39 2007 - - 3 Answers - 0 Comments

A. If it's a little cracked now, it'll be a lot more cracked after a few years over the heater. Hang something over the heater that you don't care about.
Answered by helene - Fri Dec 21 11:47:54 2007

Gas thermometers?
Q. A gas thermometer registers an absolute pressure corresponding to 325mm of mercury when in contact with water at the triple point. what pressure does it read when in contact with water at the normal boiling point
Asked by kuti boy - Thu Aug 23 15:15:21 2007 - - 1 Answers - 0 Comments

A. Ideal gas obeys the law PV=RT. When volume remains constant P2/P1 = T2/T1 Temperature of triple point of water is T1 = 273.16K (exactly). Temperature of normal boiling point of water is T2 = 373.15K (approximately). Answer: P2 = 325mm * (373.15K/273.16K) = 444mm
Answered by Alexander - Thu Aug 23 15:25:23 2007

In chemistry students will make their temperature measurements in the lab with a thermometer with the Celsius ?
Q. In chemistry students will make their temperature measurements in the lab with a thermometer with the Celsius scale. However, in their studies using Gas Laws, all measurements must be converted to the Kelvin scale. If a student measures a gas in the lab and finds the temperature to be 18 degrees Celsius, what temperature Kelvin will the student use for their calculations?
Asked by Sheri P - Thu Nov 13 00:37:13 2008 - - 2 Answers - 0 Comments

A. kelvin = celcius + 273
Answered by hiddenstallion - Thu Nov 13 00:41:35 2008

How high should the gas be up to be 300 degrees?
Q. This is a very specific question... I have a recipe that says to "heat an electric skillet to 300 degrees." I don't have an electric skillet, so I will have to do it in a regular skillet over a gas stove. What level do you think the heat needs to be to reach about 300 degrees (med, med low, etc.)? I don't have a thermometer.
Asked by Mandy - Tue Jul 24 19:03:36 2007 - - 3 Answers - 0 Comments

A. It depends on the vessel you are using. Cast iron will heat hotter at lower heat and maintain the heat evenly. Stainless tends to need higher heat and the temperature will be hotter at the bottom of the pan.
Answered by foodtvfan - Tue Jul 24 19:09:03 2007

Is a mercury thermometer truthful everywhere?
Q. If "real" temperature is different from "perceived" temperature, does a gas really cool down as it expands? Do the particles move more slowly? Would we feel colder in a far less dense gas with the same average particle kinetic energy? Would a mercury thermometer show the "real" temperature or indicate how we would feel?
Asked by The Real Simpson - Thu Feb 14 02:44:17 2008 - - 2 Answers - 0 Comments

A. you need an alcohol thermometer for low temperatures, because mercury freezes
Answered by moramora - Thu Feb 14 11:23:32 2008

How do you calculate the melting temperature of lead from the ratio of pressure & the triple point of water?
Q. A constant volume gas thermometer is used to measure the melting point of lead. The ratio of the measure pressure at this temperature to that at the triple point of water is 2.1982. What is the melting temperature of lead in kelvin? I have no clue how to calculate it!
Asked by Hayley* - Sat Jan 12 07:19:45 2008 - - 2 Answers - 0 Comments

A. The calculation is simple: Ratio of pressures equals ratio of Kelvin temperatures. Triple Pt of Water is 273.16K (=0.01 C), so Melting Point of Lead=273.16K x 2.1982 = 600.46K (answer) =327.31 C. (agrees with actual value 327.5 C) Here's the theory: for ideal gases, PV=nRT, where P=Absolute Pressure, V=Volume, n=number of moles, R=universal gas constant, T=absolute (Kelvin) temperature. In a constant volume gas thermometer, you get P1/T1=P2/T2. Thus, ratio of Kelvin temperatures = ratio of corresponding pressures, which leads to the answer above. A little more on the Ideal Gas Temperature Scale: When the Constant Volume Gas Thermometer is used, in practice, because we don't have an ideal gas, we define temperature as T*=(273.16K) x lim… [cont.]
Answered by Ankur TG - Sat Jan 12 07:35:28 2008

What would its pressure be at the normal boiling point of oxygen?
Q. A constant-volume gas thermometer is filled with air whose pressure is 96 kPa at the normal melting point of ice. What would its pressure be at the normal boiling point of oxygen (90.2 K)?
Asked by wil - Tue Nov 20 17:19:45 2007 - - 2 Answers - 0 Comments

A. Melting point of ice is 273.15K Volume is constant. P1/T1 = P2/T2 P1T2/T1 = P2 96 kPa (90.2K) / 273.15K = P2 P2 = 31.7 kPa
Answered by . - Tue Nov 20 17:23:50 2007

I want to cook corn on the cob on a gas grill. How?
Q. I don't have a thermometer on the grill either. How have you cooked corn on the grill? Thanks everyone. You all had such great answers. We'll be munching it down within the hour.
Asked by Donna E - Sat Jun 21 10:37:15 2008 - - 10 Answers - 0 Comments

A. We usually wrap ours in foil and then estimate it. We usually cook it for about 20-30 minutes. However, here is a more exact recipe that does it a little differently... I would just experiment the first few times and then find a way that works for you. Good luck!
Answered by NanaNibs - Sat Jun 21 10:44:19 2008

Re: Gas oven problem with burning the bottom of foods?
Q. Thanks all; those are some great suggestions. I do use propane. To know I was probably cooking at 450 when I wanted 350 was eye opening. I do use the top shelf and have tried a silicone tube pan with the cake before with the same results. I think the oven is just cooking too hot as was mentioned. I m going to get a thermometer and look for the insulated cookie sheet tomorrow when I go out. I don't know why I didn't think of that. Well, I suppose that's what this forum is all about: helping others :-) Thanks again for the terrific answers.
Asked by bunkeeburns - Fri Jan 5 22:09:33 2007 - - 1 Answers - 0 Comments

A. Your welcome abc
Answered by Bill G - Tue Jan 9 12:21:02 2007

10 points to whomever can show me how this is done...please be good at physics this is my last chance?
Q. A constant-volume gas thermometer is calibrated in dry ice (that is, carbon dioxide in the solid state, which has a temperature of -80.0 C) and in boiling ethyl alcohol (78.0 C). The two pressures are 0.861 atm and 1.569 atm. (a) What Celsius value of absolute zero does the calibration yield? (Express your answer to the nearest 0.01 C.)
Asked by Edward Dazzles Me - Tue Apr 22 02:13:57 2008 - - 2 Answers - 0 Comments

A. P = 0.004481( T + 273.15 ) + 0.003858 When P = 0, then: T = 274.01 C = 0 K
Answered by Charles A - Tue Apr 22 03:05:38 2008

gas furnace just isn't heating the house?
Q. We have a Payne Plus 90 gas furnace. It just doesn't keep the house warm anymore. A couple of winters ago, we had this problem and the service man told us that it isn't designed to operate below 25 degress. It sits in the garage. That sounds crazy. This winter, it isn't working well either. So what happens is that it turns on, and only runs for maybe 6-8 minutes before shutting off. It might be hours before it comes back on again. We are calling someone to come out next week, but I am just wondering what we could possibly check for this weekend to get it going. We checked the water drain trap, and cleared it. It did not have a clog or build up of water. We replaced the thermostat in the house because we first thought it just… [cont.]
Asked by Sheryl - Sat Jan 20 00:05:54 2007 - - 8 Answers - 0 Comments

A. If I were you I'd read the directions for the thermostat from front to back. All thermostats have some sort of a "deadband" built into them. This deadband may or may not be adjustable but it's purpose is to keep the furnace from cycling on and off too frequently. The deadband could be as little as 1 degree or much higher if it is adjustable. The deadband makes sure that the temperature falls to a point below the setpoint prior to starting the furnace. The furnace will then bring the temperature up to the set point before shutting off. Since a 90% efficient furnace condenses water it is likely that the reason for the 25'F minimum temperature limit is due to the potential of freezing water in the condensate outlet line causing the… [cont.]
Answered by Coach - Sat Jan 20 00:26:39 2007

Car stalls out when I give it gas?
Q. I live in Florida, and usually whenever it's just hot outside. I actually noticed this last summer but it was infrequent so I didn't think about it. But occasionally my internal thermometer would read in the middle what ever it's called to the left of my odometer. So usually when that is at 1/2 it gives me problems. Also maybe it's because my pedal sticks so when I first give it gas. And my car jerks when first accelerating.
Asked by Brian E - Thu Sep 4 15:09:48 2008 - - 3 Answers - 0 Comments

A Celsius thermometer and an absolute thermometer (Kelvin) are used to measure the temperature \.?
Q. A Celsius thermometer and an absolute thermometer (Kelvin) are used to measure the temperature of the same gas sample. The readings on the thermometers are respectively Tc and TK (hint: refer to absolute temperature scale figure in text or think about how you would convert Celsius to Kelvin) a. Tc is larger than TK b. Tc is smaller than TK c. Tc is equal to TK d. any of the above, depending on the gas temperature
Asked by Tim M - Thu Feb 19 18:37:01 2009 - - 1 Answers - 0 Comments

A. Kelvin is found by taking the Celsius reading and adding 273. For example 10*C equals approximately 283K. Therefore Tc would always be smaller than Tk. [answer b]
Answered by Brandon C - Thu Feb 19 21:04:00 2009

How can I prevent food from burning to the bottom of the casserole dish?
Q. I have a gas stove. I have checked the temperature with an oven thermometer and it registers correctly. If I bake foods on the center rack, the food burns to the bottom of the pan before it cooks for the minimum amount of time listed in the recipe. I never get a nice, lightly browned crust on top. My casserole dishes are glass. Can you help me figure out what to do?
Asked by lillian.klasc - Tue Aug 26 10:35:09 2008 - - 14 Answers - 0 Comments

A. Put a broiler pan on the lower rack. that will disperse the heat around the casserole pan above it. I have the same problem, so I leave my broiler pan in there almost all the time, and it works great. stops cookies, biscuits, sweet potatoes, etc from burning as well.
Answered by kevin g - Tue Aug 26 10:43:08 2008

Why does my oven do a horrible job?
Q. I recently moved to a place with an old gas range. The oven is just horrible. It takes forever for food to cook, and even then, it doesn't come out very well. I have an oven thermometer, which verifies that the oven has the proper temperature for the food being cooked - so I can't figure out what could be the problem.
Asked by xinxz - Thu Apr 5 04:49:34 2007 - - 3 Answers - 0 Comments

A. I had the same problem, I recently puchased a new gas range and guess what? the same thing. Even new ranges don't cook as expected. It takes a while to "break yourself" into a stove/range. keep notes on your favorite dishes / how long and what temperature. Also try raising the temp by 25 degrees. Rotate your food/pan 1/2 way through the cooking process, all chefs do this. Even though my new oven reaches temp accurately it takes way to long to cook things, so I have raised the temp by 25 degrees and it is much better! It doesn't matter if the stove is 30 years old or 30 days old - they all have issues...
Answered by lakelady - Thu Apr 5 05:17:55 2007