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In general the silver tael weighed around 40 grams (1.3 ozt). The most common government measure was the Kuping ( 庫平 ; kùpíng ; 'treasury standard') tael, weighing 37.5 grams (1.21 ozt). A common commercial weight, the Caoping ( 漕平 ; cáopíng ; 'canal shipping standard') tael weighed 36.7 grams (1.18 ozt) of marginally less pure silver.
For gases, departure from 3 R per mole of atoms is generally due to two factors: (1) failure of the higher quantum-energy-spaced vibration modes in gas molecules to be excited at room temperature, and (2) loss of potential energy degree of freedom for small gas molecules, simply because most of their atoms are not bonded maximally in space to ...
Trisodium phosphate (TSP) is an inorganic compound with the chemical formula Na 3 P O 4. It is a white, granular or crystalline solid, highly soluble in water, producing an alkaline solution. TSP is used as a cleaning agent , builder , lubricant , food additive , stain remover , and degreaser .
Sodium oxide is a chemical compound with the formula Na 2 O. It is used in ceramics and glasses. It is a white solid but the compound is rarely encountered. Instead "sodium oxide" is used to describe components of various materials such as glasses and fertilizers which contain oxides that include sodium and other elements. Sodium oxide is a ...
In 2014 researchers identified a liquid sodium–cesium alloy that operates at 50 °C (122 °F) and produced 420 milliampere-hours per gram. The new material was able to fully coat, or "wet," the electrolyte. After 100 charge/discharge cycles, a test battery maintained about 97% of its initial storage capacity.
60:40 mixture of sodium nitrate and potassium nitrate is a liquid between 260–550 °C (500–1,022 °F). It has a heat of fusion of 161 J/g, [ 3 ] and a heat capacity of 1.53 J/(g·K). [ 4 ]
The equivalent weight of an element is the mass which combines with or displaces 1.008 gram of hydrogen or 8.0 grams of oxygen or 35.5 grams of chlorine. The equivalent weight of an element is the mass of a mole of the element divided by the element's valence. That is, in grams, the atomic weight of the element divided by the usual valence. [2]
1 Australian metric tablespoon = 20 ml = 1 1 / 3 international metric tablespoons = 2 metric dessert spoons, 1 metric dessert spoon = 10 ml each = 4 metric teaspoons, 1 metric teaspoon = 5 ml each ≈ 5.63 British imperial fluid drachms ≈ 0.7 British imperial fluid ounce ≈ 1.41 UK tablespoons ≈ 2.82 UK dessert spoons