The resistance of a platinum resistance thermometer is 30 ohms at the ice point, 40 ohms at the steam point and 34.5 ohms on a certain hot day. What is the temperature of the day in Celsius? How much heat is needed to melt 14.3 kg of sil...
While incredibly expensive, only lamé made using genuine gold, silver, platinum, or another precious metal can truly be considered “cloth of gold.” 8. Aluminum or imitation lamé Lamé consisting of aluminum wound around rayon, polyester, or another type of synthetic textile fiber may be ...
Platinum comes in stable isotopes 190, 192, 194, 195, 196, and 198. Among those, the scarcest is 190, whose natural occurrence is 0.014%. If platinum as a whole exists at 7.5 ppb in the earth’s crust, Pt-190 would be 0.014% of that: 0.00105 ppb or about one part per trillion....
A platinum wire is used to determine the melting point of indium. The resistance of the platinum wire is 2.000 at 20 degrees Celsius and increases to 3.072 as indium starts to melt. What is the melting point of indium? (The temperature coeffic...