What is the difference between the minute hand and hour hand? The large hand on a clock that points to the minutes. Example: in the clock on the left, the minute hand is just past the “4”, and if you count the little marks from “12” it shows that it is 22 minutes past the […]
Why does CH3 violate the octet rule?
Why does CH3 violate the octet rule? 1 Answer. Ernest Z. B(CH3)3 violates the octet rule because the B atom has only six valence electrons in its valence shell. The octet rule is a chemical rule of thumb that states that atoms of main-group elements combine in such a way that each atom will have […]
Why is it called pulmonary artery?
Why is it called pulmonary artery? The pulmonary arteries carry deoxygenated blood from the right ventricle into the alveolar capillaries of the lungs to unload carbon dioxide and take up oxygen. These are the only arteries that carry deoxygenated blood, and are considered arteries because they carry blood away from the heart. What is the […]
What is the specific gravity of propane liquid?
What is the specific gravity of propane liquid? LPG Properties Chart LPG – Propane Boiling Point -42 °C or -44 °F Specific Gravity of Liquid LPG-Propane 0.495 (25°C) LPG Density Propane Gaseous Density 1.898 kg/m3 (15°C) or 0.1162 lb/ft3 Energy Content of LPG 25 MJ/L or 91,547 BTU/Gal (60°F) LPG Gaseous Expansion 1 L (liquid) […]
In which cases entropy decreases?
In which cases entropy decreases? – In the polymerisation it is found that the number of molecules present is decreasing, the randomness decreases and hence, entropy also decreases. – Hence, we can say that the correct option is (d), that is in Polymerisation, entropy decreases. How do you know when entropy increases or decreases? A […]
What are two properties that make a metal a good choice to use as a wire?
What are two properties that make a metal a good choice to use as a wire? The ductility of metals (such as copper) is it’s ability to be stretched into wires. A metal’s conductivity (with regards to electrics) is it’s ability to transfer electricity through it. Copper is typically used in home wiring because of […]
What makes sunsets so beautiful?
What makes sunsets so beautiful? Clean air is, in fact, the main ingredient common to brightly colored sunrises and sunsets. To understand why this is so, one need only recall how typical sky colors are produced. The familiar blue of the daytime sky is the result of the selective scattering of sunlight by air molecules. […]
What is difference between material and substance?
What is difference between material and substance? Material: The material is a Something that has Certain Characteristics which are used to manufacture or to produce the desired product. For example, Water and Fibres are examples of Material. 2. Substance: A Substance is a matter that has a definite structure or composition. What is a pure […]
What are 3 facts about chemical changes?
What are 3 facts about chemical changes? Interesting Facts about Chemical Reactions When ice melts it undergoes a physical change from solid to liquid. Mixtures and solutions are different from chemical reactions as the molecules of the substances stay the same. Most cars get their power from an engine that uses a combustion chemical reaction. […]
What are the four south poles?
What are the four south poles? Of the many interesting historical facts and stories he told, the students were amazed to find there are four South Poles on the Earth’s crust: The Geographic South Pole. The South Magnetic Pole. The Geomagnetic Pole. Will Earth ever lose its magnetic field? The direction and intensity of the […]