A. In its elemental form, platinum has a grayish white appearance. A cubic piece of platinum metal (specific heat capacity \( =0.1256 \mathrm{~J} /{ }^{\circ} \mathrm{C} \cdot \) g) at \( 200.0^{\circ} \mathrm{C} \) is dropped into . This is the typical heat capacity of water. How much heat(Q) is released when a 10 g piece of platinum cools from 100C to 50C?10: 66.5 J 20 g of water. For high enough temperature, the vibrational modes will start becoming active, and the specific heats will start inching up towards 3.5 (and beyond), figure 11.15. Specific Heat Capacity Conversions: 1 Btu/ (lb-F) = 4186.8 J/ (kg-K) Science, 28.10.2019 16:28. Specific Heat: 0.13 J/g K: 0.128 J/g K: Heat of Fusion: 19.6 kJ/mol: specific heat [J g-1 K-1] 0,13: heat of fusion [kJ mol-1] 19,6: thermal conductivity [W m-1 K-1] 72: el. The specific heat of platinum is 0.133 J/gC. Get the detailed answer: what is the specific heat of platinum? The Constitutional Diagram Latent Heat of Vaporization of Platinum is 510 kJ/mol. The thermodynamic properties of platinum were reviewed here by the author in 1994. Check out a sample Q&A here See Solution star_border Students who've seen this question also like: Chemistry Chemical Foundations. Material J/kg.K Btu/lbm.F J/kg.C kJ/kg.K Aluminium 887 0.212 887 0.887 Asphalt 915 0.21854 915 0.915 Bone 440 0.105 440 0.44 Boron 1106 0.264 1106 1.106 Brass 920 [] Click on 'Element Atomic Number', 'Element Symbol', 'Element Name' and 'Element Specific Heat' headers to sort. 85 c. 0.459 d. 0.136 e.2.18 Expert Answer 100% (3 ratings) The specific heat capacity of water at normal pressure and temperature is approximately 4.2 J g C or 1 Cal g C. The specific heat of carbon steel is 0.49 kJ/kgC and the heat required can be calculated as q = (0.49 kJ/kg oC) (2 kg) ( (100 oC) - (20 oC)) = 78.4 (kJ) Sponsored Links . answer choices 66.5 J 665 J 0.0266 J 0.665 J Question 2 120 seconds Q. Expert Solution Want to see the full answer? Latent Heat of Vaporization of Platinum is 510 kJ/mol. 10. The Debye model is a method developed by Peter Debye in 1912 [ 7] for estimating the phonon contribution to the specific heat (heat capacity) in a solid [ 1]. specific heat of platinum is 0.13 joule/gram.K and density is 21.37 grams/cm 3 http://hyperphysics.phy-astr.gsu.edu/hbase/pertab/pt.html what's mass of your wire? Periodic Table of the Elements Chemical & Physical Properties of Platinum . 12, 436 - Published 1 December 1918 6. The intensive properties cv and cp are defined for pure, simple compressible substances as partial derivatives of the internal energy u (T, v) and enthalpy h (T, p), respectively: Question:Platinum has a specific heat capacity of 0.133 J/g.'C. A. It is one of the rarest elements in the earth's crust, occurring at a concentration of only 0.005 ppm. Specific heat of Platinum is 0.13 J/g K. Latent Heat of Fusion of Platinum is 19.6 kJ/mol. Specific Heat 0.13 J/gK Sources Produced from deposits of native, or elemental, platinum. However, the use of superior values for the enthalpy of liquid platinum have resulted in a major . Answers: 1. Element Material: Platinum; Supplier Catalog Go To Website Download Datasheet. generated by the 10 per cent rhodium-platinum thermoelement, and industrial pyrometry depends very largely upon the thermal stability of this alloy system. 85 c. 0.459 d. 0.136 e.2.18 This problem has been solved! It also contains basic descriptions and applications of both elements. Name Origin (6 points) B. If you have problems with the units, feel free to use our temperature conversion or weight conversion calculators. Q. Determine the final How much heat(Q) is released when a 12 g piece of platinum cools from 100C to 25C? Platinum is found uncombined as a free element and alloyed with iridium as platiniridium. Lithium: Value given for solid phase. Uses Used in jewelry, to make crucible and special containers and as a catalyst. When platinum wire is heated no new substance is formed the wire becomes white hot but is still platinum What would you say about this change? This article contains comparison of key thermal and atomic properties of platinum and gold, two comparable chemical elements from the periodic table. How much heat (Q) is released when a 10 g piece of platinum cools from 100C to 50C? Which is an example of physical change answer? Specific Heat Specific heat, or specific heat capacity, is a property related to internal energy that is very important in thermodynamics. temperature changes from 25 C to 20 C, how much heat energy (Q) moves from the water to the surroundings?11: If 20 g of water undergoes a temperature change from 25 C to 30 C, how much heat energy (Q) moves from the water to the surroundings? The corresponding variation of the Debye temperature is compared to that calculated from elastic data using a central force model. 7. The specific heat of palladium, platinum, gold and copper below 30 K @article{Boerstoel1971TheSH, title={The specific heat of palladium, platinum, gold and copper below 30 K}, author={B. M. Boerstoel and J. J. Zwart and J. Hansen}, journal={Physica D: Nonlinear Phenomena}, year={1971}, volume={54}, pages={442-458} } B. M . LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION Rev. Q. answer choices 66.5 J 665 J 0.0266 J 0.665 J Question 2 180 seconds Q. N/A. But it takes to temperatures of 1 000 K (hydrogen), 600 K (nitrogen), or 400 K (oxygen) before there is a 5% deviation from the 2.5 . Zirconium. Aquicker way to know the polarity pf. OneClass: what is the specific heat of platinum? Answer. 1RQ expand_more A 54.9-gram piece of platinum at 91.0C is placed into 25.6 mL of water at 19.7C. Answers: 1 See answers. http://www.inpeth.com/course/y6ISkert5K3hpYWfae-Nia-W6pZfbZXGgBeAVXyCQc3vrt9S1cjAgmCshC0kmfJO#Heat No anomalous temperature dependence of the lattice heat capacity is observed. Helium: Value given for gas phase. area of mineral wool insulation in contact with a thermal diode, m2 area of the storage wall, m2 specific heat of water, J/kg"C specific heat of brick, J/kg"C specific heat of plastic form, J/kg"C heat transfer coefficient solar absorber to front, W/m2 What is the mass, in grams, of the platinum? Your source for the latest specific heat of platinum articles. Even water vapour has a higher specific heat capacity than many other materials at normal temperature. Previous article Next article 7.5 b. How much heat (Q) is absorbed when a 10 g piece of platinum warms from 100C to 150C? Each substance has their own specific heat capacity, which is . You have to convert either the specific heat of platinum, or the actual heat required from Cal/g K to J/g K. I"ll convert the specific heat and calculate the heat directly in Joules. The specific heat of platinum in the temperature range 1200 to 1900 K has been measured by a temperature modulation method. Resists corrosion and acid attacks except aqua regia. In this, the light emitted by a specimen of 50 m diameter wire heated by superimposed ac and dc was used to study the temperature modulation. Follow specific heat of platinum trends, innovations and developments on echemi.com. Specific heat of Platinum is 0.13 J/g K. Latent Heat of Fusion of Platinum is 19.6 kJ/mol. What is the mass, in grams, of the platinum? See the answer Increasing the temperature of 25.0 g of platinum by 4.00C requires 13.6 J. Platinum vs Gold. The specific heat capacity of materials ranging from Water to Uranium has been listed below in alphabetical order. 8. Latent Heat of Vaporization of Platinum is 510 kJ/mol. It is highly resistant to corrosion: the metal does not oxidize in air at any temperature. The specific heat tells us how difficult it is to heat the given body. Also, it depends on external conditions: pressure and temperature. K). What happens when platinum is heated? Specific heat of Platinum is 0.13 J/g K. Specific heat, or specific heat capacity, is a property related to internal energy that is very important in thermodynamics. Its value depends on internal structure of molecules that make the substance. The relationship between heat and temperature change is usually expressed in the form shown below where c is the specific heat . Definition The specific heat capacity of a substance is the amount of heat that needs to be supplied to a unit mass of that substance to raise its temperature through 1 Celsius or Kelvin. Specific Heat Specific heat, or specific heat capacity, is a property related to internal energy that is very important in thermodynamics. Used with cobalt to produce very strong magnets. How fast will 61.4 microwatts heat it? (6 points) A 54.9-gram piece of platinum at 91.0C is placed into 25.6 mL of water at 19.7C. Another question on Science. Below this table is an image version for offline viewing. 278 J/ (kg K) [note] Notes on the Specific Heat of particular elements: Hydrogen: Value given for gas phase of H . Specific Heat Specific heat, or specific heat capacity, is a property related to internal energy that is very important in thermodynamics. The specific heat of platinum is 0.133 J/gC. 7.5 b. C. Semantic Scholar extracted view of "Specific heat of platinum from 1.4 to 100K" by G. E. Shoemake et al. This model correctly explains the low temperature dependence of the heat capacity, which is proportional to T3 and also recovers the Dulong-Petit law at high temperatures. What is the specific heat of platinum (in J/gC)? The temperature of a piece of pure platinum increases from 26.3C to 32.8C as it gains 6.74 J of energy. Is cooling a physical change? The specific heat of platinum is 0.133 J/gC. This means that 1 gm of water requires 4.2 joules of energy to raise 1 degree Celsius. What is the specific heat of platinum (in J/gC)? cp = specific heat (kJ/kg K, kJ/kg C) dt = temperature difference (K, C) Example - Heating Carbon Steel 2 kg of carbon steel is heated from 20 oC to 100 oC. Dec 18, 2015 #3 Bystander Science Advisor Homework Helper Gold Member 5,392 1,472 " Half mil?" Dec 18, 2015 #4 dlgoff Science Advisor Gold Member Since 1927 the International Temperature Scale, over the range 660 to 1063C has been defined in terms of the e.m.f. So, in order to get from calories per g Kelvin to Joules per g Kelvin you must use a conversion factor 0.032"cal"/("g" * "K") * "4.184 J"/"1 calorie" = 0.134"J"/("g" * "K") The relationship between heat and . 5. After checking that the ring is not plated, but a solid piece of metal, you test the specific heat using a calorimeter. Specific Heat table gives the Specific Heat of all the elements of periodic table in J/(kg K). This number is actually pretty high. Platinum, basic physical and chemical properties of the element. conductivity [S m-1] 9,4.10 6: 1. ionizing potential [eV] 9,0: 9. The specific heat of high purity platinum has been measured from 1.4 to 100K. The specific heat of platinum is 0.133 J/gC. A. View Specs . specific heat of water is 4.18 J/gC. The specific heat of platinum is 0.133 J/gC. A student heats 64.00 grams of platinum to 98.41 C and then drops it into a cup containing 82.54 grams of water at 23.05C. Also to make standard weights and measures. temperature of a piece of pure platinum increases from 26.3C to 32.8C as it gains 6.74 J of energy. Specific heat is usually measured in Joules per gram per degree Celsius (J/g o C)- but can also have the unit 'calorie'. Beryllium: Value given for solid phase. Abstract. Meitnerium. The specific heat is the amount of heat energy per unit mass required to raise the temperature by one degree Celsius. Specific heat is a property of substance (the so-called material constant). The Specific Heat of Platinum at High Temperatures Walter P. White Phys. Specific Heat (P) - J/gC In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction. How much heat (q) is released when a 10.0 g piece of platinum cools from 100.0C to 50.0C? This chemical property, known as specific heat, is defined as the amount of heat needed to raise the temperature of 1 gram of a substance by 1 degree Celsius. Substance Formula Phase C sp (J/g o C); Aluminum: Al: solid: 0.900: Cadmium: Cd: solid: 0.232: Chromium: Cr: solid: 0.448: Copper: Cu: solid: 0.385: Diamond: C: solid . Specific Heat (J/g C) 0.235 Metal Silver Platinum 0.132 Palladium 0.244 Table 2: Possible metals Question You're tasked with verifying whether or not a platinum ring bought from an online store is indeed made of platinum. 2. Specific heat of Platinum is 0.13 J/g K. Latent Heat of Fusion of Platinum is 19.6 kJ/mol. This . Is Heating a chemical or physical process?

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