24-C

Question: A bicycle tire is filled with air to a pressure of 72 psi, at a temperature of 24°C? A bicycle tire is filled with air to a pressure of 72 psi, at a temperature of 24°C. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58°C. The volume of the tire increases by 4.2%. What is the new pressure in the bicycle tire?

Answer: Use P1V1/T1 =P2V2/T2 Of course you need to take into account the change in volume, as well as in temperature. T must be in K. It doesn't matter that you're not using SI units, as long as you use the same units on both sides.

Question: An aerosol can contains gases under a pressure of 4.6 atm at 24â—¦C.What is the Celsius temperature on the beach? An aerosol can contains gases under a pressure of 4.6 atm at 24â—¦C. If the can is left on a hot sandy beach, the pressure of the gases increases to 4.7 atm. What is the Celsius temperature on the beach? Answer in units of â—¦C.

Answer: 4.6 / 297 K = 4.7 / T T = 303 K = 30 °C

Question: Imagine a giant dry-cleaner's bag full of air at a temperature of -24°C floating like a balloon? Imagine a giant dry-cleaner's bag full of air at a temperature of -24°C floating like a balloon with a string hanging from it 11 km above the ground. Estimate its temperature if you were able to yank it suddenly to the Earth's surface.

Answer: The previous answer is wrong. It is indeed the case that: P1 V1 / T1 = P2 V2 / T2 It is not that case that the volume remains constant. The equation you need here is the one for adiabatic processes - if you bring the balloon down suddenly, there is no time for heat energy to enter or leave the balloon. http://en.wikipedia.org/wiki/Adiabatic_p… For an adiabatic process with an ideal gas: P V^g = constant, as is P^(g-1) T^-g or P1 V1^g = P2 V2^g and P1^(g-1) T1^-g = P2^(g-1) T2^-g where g = Cp / Cv = 7/5 for air. If you assume that the reference to a dry-cleaner bag means the balloon envelope has no strength, then it must be the case that: P1 = 0.2 atmospheres while P2 = 1.0 atmospheres. Note that this means that the balloon shrinks: P1 V1^g = (0.2) (1.0)^(7/5) = 0.2 = P2 V2^g = (1.0) (V2)^(7/5) But since you don't really care about V2 you can use: P1^(g-1) T1^-g = P2^(g-1) T2^-g to compute T2 directly since you have P1, P2, T1, and g.

Question: What is the approximate osmotic pressure of a 0.118 m solution of LiCl at 24 °C? The freezing point of this so? please show process used to solve if possible What is the approximate osmotic pressure of a 0.118 m solution of LiCl at 24 °C? The freezing point of this solution is -0.415 °C. Express the answer in torr.

Answer: osmotic pressure goes by this equation.. P = i MRT where.. P = osmotic pressure i = van't hoff factor = # ions 1 molecule of solute dissociates into M = molarity.. notice that is molaRity.. moles solute / liter of solution R = ideal gas constant... 0.08206 Latm/moleK T = temp in kelvin... ******** freezing point depression goes by... dTfp = Kb x m x i where.. dTfp = change in freezing point (fp) = fp pure solvent - fp solution Kb = cryoscopic constant for the solvent m = molality.. notice that is molaLity?.. moles solute / kg solvent... i = van't hoff factor... ********** ********** ok... so where does that leave us here? 0.118 m means 0.118 MOLAL.. m is molality.. not molarity.. molaRity is M...ok? so it's almost as if you're instructor is suggesting m ≈ M and that you assume the solvent is water and that you use dTfp = Kb x m x i to calculate i then use "i" in that first equation along with M to find P to me.. that's a lot of assumptions... and a roundabout way to get at the answer. but let's try it.. dTfp = 0 - 0.415°C = 0.415°C Kb = 1.86°C/m.. for water m = 0.118m i = ? = 0.415°C / (1.86°C/m x 0.118m) = 1.89... then... P = 1.89 x (0.118 moles / L) x (0.08206 Latm/moleK) x (297K) = 5.44 atm and in torr.. 5.44atm x (760 torr / 1 atm) = 4130 torr

Question: the percentage composition of a polymer used for the non- stick surfaces of a cooking utens is 24%c and 76%F.. the percentage composition of a polymer used for the non- stick surfaces of a cooking utens is 24%c and 76%F by mass. explain the steps in determining the empirical formula of the polymer? please help i have no idea

Answer: use the molecual weight of each seperate then added up and find the %

Question: How much energy would be absorbed by 550 g of copper that is heated from 24 °C to 45 °C ? 5. How much energy would be absorbed by 550 g of copper that is heated from 24 °C to 45 °C ? http://saxonhomeschool.hmhco.com/ha/Reso…

Answer: Q = Mass x specific heat of copper x Temp change Q = 0.55 x (sph of copper- sorry I don't know it) x 45-24 Q = 11.55 x sph of copper

Question: What is Kp for this equilibrium at 24°C? Solid NH4HS is introduced into an evacuated flask at 24°C. The following reaction takes place. NH4HS(s) <====> NH3(g) + H2S(g) At equilibrium the total pressure (for NH3 and H2S taken together) was 0.614 atm. What is Kp for this equilibrium at 24°C?

Answer: NH4HS(s) <====> NH3(g) + H2S(g) solids are not part of Kp, the gases are 1/2 of the pressure is from NH3 . the rest is from H2S Kp = [NH3] [H2S] Kp = [0.307] [0.307] Kp = 0.0942

Question: What is the change in length of a 2.00 m copper pipe if its temperature is raised from 24°C to 981°C? What is the change in length of a 2.00 m copper pipe if its temperature is raised from 24°C to 981°C? _____m help? thanks!!

Answer: The way to get help is to show that you have tried and what you have tried and where you are stuck so you may get help. Just posting problem for an answer is expecting yahoo answer providers to do your home work .. and that is not a good idea. Learn now so going forward will be easier. Be lazy now and you will not get good grades or into good colleges. It's for your own good.

Question: 27.7 L of a gas is cooled at constant pressure from 87C tp 24 C. What will the volume be at the lower tempertu? yea anyone happen to know? answer is 22.9Liters but i was wondering why?

Answer: You've got two variables: Temperature and Volume. As Temperature goes up, so does Volume and vice versa. (Imagine what happens in hot air compared to cool air.) So, they are proportionally related (you should keep in mind the Combined Gas Law): V�÷ T�= V₂÷ T₂ The variables to plug-in follow: V� = 27.7 L T� = 87 C = 360 K T₂ = 24 C = 297 K V₂ = x L 27.7 / 360 = x / 297 If you calculated this problem correctly- you should get about 22.9 L. ----- The Ideal Gas Law has its uses in problems similar to this- but it shouldn't be used in this problem; usually involving finding or being given the moles (n) of gas.

Question: How many kilojoules does it take to change the temperature of 50 grams of water from 20 C to 24 C?

Answer: Q = mass x specific heat x delta T Q = 50 x 4.18 ( 24 - 20)= 836 J => 0.836 kJ

Question: Imagine a giant dry-cleaner's bag full of air at a temperature of -24°C? Imagine a giant dry-cleaner's bag full of air at a temperature of -24°C floating like a balloon with a string hanging from it 11 km above the ground. Estimate its temperature if you were able to yank it suddenly to the Earth's surface.

Answer: there are too many variables for you to get a decent answer.... temperature of what, the bag or the air inside? are we assuming the bag is instantaneously on the surface or is air friction taken into account? heat transfer coefficient of the bag volume/surface area of the bag where on the earth's surface? big difference between the arctic surface and a desert's at least these questions need to be answered before you can even estimate the answer you're looking for.

Question: A strong lightning bolt transfers about 24 C to Earth. The charge on an electron is 1.60218 × 10−19 C. How man? Please help me! A strong lightning bolt transfers about 24 C to Earth. The charge on an electron is 1.60218 × 10−19 C. How many electrons are transferred?

Answer: Hun, you got cut off.

Question: How many overtones are present within the audible range for a 2.37 m long organ pipe at 24°C if it is open?

Answer: seven

Question: What do people mean when they put [c=24] and things similar to that? [c=24] [c=25] its wierd i was wondering if anyone else knew what they meant. I am absolutely clueless!

Answer: hi these are color and font style codes of PLUS if you aren't using PLUS you cannot see the colors only the codes get PLUS here http://www.msgpluslive.net open MSN tools options write the nick then click the button that says 'color codes' chose the color you want apply/ok if you want to colorize the nick background click at 'color codes' then select T select the color you want apply/ok you can also this script for PLUS.. it's really fine script name editor http://www.msgpluslive.net/scripts/view/… if you want tu use color codes select the color you want using the color chart of your conversation window for ex. 2 (blue) then put the codes with the nickname in the middle [c=2]your name[/c] if you want a graduated nick example [c=2]your name[/c=4] (4 is red) you can also change the font styles [b]your name[/b] bold [i]your name[/i] italic [u]your name[/u] underlined if you want to colorize the nick background use 'a' [a=18][c=2]your name[/c= 4][/a=18] you can use one of these color charts http://filotony05.spaces.live.com/blog/c… http://erchanfli.spaces.live.com/Blog/cn… http://usuarios.sion.com/pauluk/coloresh… -->> your friends can only see the colors when they are using PLUS -->>if you want to colorize your PERSONAL MESSAGE (subnick) you better add yourself so you can see the results to change a color we have to write •$X (uppercase+3 y uppercase+4) where X is the color number you we want to use copy the color codes of the color charts I left above or use the one of the conversation window .. the icon with the little color squares for example [ c=#328FC2 ][ /c ] copy #328FC2 and in your subnick it will be that kind •$#328FC2 and your message another example red green blue •$4red•$ •$3green•$ •$blue•$ writing these symbols our contacts will see a colored personal message we had selected If we want to finish a color and leave it normally just write •$ so you can create a subnick (personal message) with several colors and also •# (if you want bold) •@ (if you want underlined) •& (if you want italic) you can also use this script for PLUS.. it's really fine script name editor http://www.msgpluslive.net/scripts/view/… having PLUS you can also use this web http://www.mundoemoti.com/Nick_MsgPlus.h… or visit this website . http://jackiboi.spaces.live.com/blog/cns… I hope I helped ☆¸.•*¨*`•.ђคשє ค ภเςє ๔คу ¸.•*¨*`•.¸☆ ::: (\(\ *: (=' :') :* •.. (,('')('')¤° ☆¸.•*¨*`•.☆$คlย2☆¸.•*¨*`•.¸☆ ☆cσ�ч�ιgђτ ©2008 χคηค™☆ ☆đση'т ¢σ�у, вє σ�ιgιคℓ☆

Question: Compound A melts at 801 C and is soluble in water. Compound B melts at 24 C and is insoluble in water.? Which of these compounds is more likely to be and organic compound? Please, explain your reasoning.

Answer: Compound B is most likely the organic compound. They tend to be both insoluble and volatile.

Question: What is the true mass of water weighed at 24°C in the air if the apparent mass is 1.0346 + - 0.0002 g? What is the true mass of water weighed at 24°C in the air if the apparent mass is 1.0346 + - 0.0002 g? The density of air is 0.0012 + - 0.0001g/mL and the density of balance weights is 8.0 + - 0.5g/mL.

Answer: This is a bouyancy question. Wt H2O - Bh2o = WtBWs - BBWs = 1.0346g The forces on the two sides of the scale ... well, they balance! but the forces include bouyancy forces. If you recall your grade school physics (apparently you do not since here we are) the force of bouyancy is equal to the weight of the volume of displaced air. So you need to determine delta V the difference in volume between the 2 sides of the balance that volume of air is reducing the weight of the water (since we know the water will have a larger volume than the BWs (Balance Weights) when they have a density of 8.) You'll need the density of water at 24C. Look it up. Then plug and chug.

Question: What volume (ml) of O2 is collected over water at 24 C? 2KClO3(s) → 2KCl(s) + 3O2(g) What volume (ml) of O2 is collected over water at 24.0 oC by the reaction of 0.254 g of KClO3 if the barometric pressure is 728.9 mm Hg. The vapor pressure of water at 24.0 oC is 22.4 mm Hg.

Answer: well. the baramotic pressure is equal to 22.4squared - the vapor pressure of 24.0 times by the reaction of 0.245of KCIO3. I DON'T HAVE A CLUE

Question: My Athlon64 x2 4400 stays at 21 C and in games is about 24 C. is that ok for my processor?? this is with the stock heatsink and fan actually, yes, you are right. i looked at the auxillery temp. the CPU temp is 36 C now in idle and about 41 C during gamig.

Answer: Those temperatures sound too low, even for celsius - that's barely warmer than room temperature; your CPU would be cool to the touch at 24 deg C - I suspect the measurement hardware is broken. You should be seeing temperatures up around 35 to 40 deg C.

Question: A helium balloon is filled in a store at room temperature (24°C) to a volume of 6.5 L.? The balloon is then taken outside where the temperature is only 8°C. What is the new volume of the balloon? A: 6.1 L B: 6.9 L C: 2.2 L D: 19 L Need an answer ASAP! Thank you!

Answer: First you need to convert these temperatures to Kelvin by adding 273 to them. The inside temperature is now 297 and the outside temperature is 281. Then you do V/T=V/T. 6.5/297=x/281 and solve for x. x=6.1 so the answer is A

Question: Using the value for ΔH and ΔS in the worksheet, calculate ΔG for the melting of water at 24˚C.?

Answer: DeltaG = DeltaH - T DeltaS Where's the problem?