Yahoo Αναζήτηση Διαδυκτίου

Αποτελέσματα Αναζήτησης

  1. 9 Νοε 2023 · Platinums exceptional properties and scarcity make it one of the most sought-after and valuable precious metals. See the fact file below for more information about Platinum, or you can download our 27-page Platinum worksheet pack to utilize within the classroom or home environment.

  2. Learn about its historical discovery, vital physical and chemical properties, and its wide-ranging applications in industries from automotive to healthcare. Understand the enduring allure and value of this once 'worthless' precious metal.

  3. 15 Οκτ 2023 · Here are some of the key properties of platinum: Physical Properties: Density: Platinum is a very dense metal, with a density of approximately 21.45 grams per cubic centimeter (g/cm³). This high density makes it heavy and gives it a substantial feeling.

  4. Element Platinum (Pt), Group 10, Atomic Number 78, d-block, Mass 195.084. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

  5. 17 Μαΐ 2022 · Physical and chemical properties. Physically, platinum is heavy, soft, malleable (easy to work—only silver and gold are easier to shape), and ductile (easy to draw into wires) and has a fairly high melting point (~1770°C or 3220°F). Chemically, it's often described as a noble metal because it is so unreactive.

  6. Platinum is a chemically stable element as it is one of the least reactive metals (Nobel metal). platinum have two oxidation states, +2 and +4. Platinum readily reacts with carbon. Certain non-metals, including phosphorus, silicon and sulfur also combine with platinum.

  7. An object that is moving with a velocity of +2 m·s–1 accelerates for 5 seconds with an acceleration of +0,6m·s–2. 1.1 Calculate its final velocity using equations of motion. (3) The object then slows to a stop, covering 10 m while it is slowing. 1.2 Calculate its acceleration using equations of motion.