Search results
Results from the WOW.Com Content Network
11.6 g of NaCl is dissolved in 100 g of water. The final mass concentration ρ(NaCl) is ρ(NaCl) = 11.6 g / 11.6 g + 100 g = 0.104 g/g = 10.4 %. The volume of such a solution is 104.3mL (volume is directly observable); its density is calculated to be 1.07 (111.6g/104.3mL) The molar concentration of NaCl in the solution is therefore
This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison. As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium.
Normality is defined as the number of gram or mole equivalents of solute present in one liter of solution.The SI unit of normality is equivalents per liter (Eq/L). = where N is normality, m sol is the mass of solute in grams, EW sol is the equivalent weight of solute, and V soln is the volume of the entire solution in liters.
Very often, the measure is used in terms of milliequivalents of solute per litre of solution (or milliNormal, where meq/L = mN). This is especially common for measurement of compounds in biological fluids ; for instance, the healthy level of potassium in the blood of a human is defined between 3.5 and 5.0 mEq/L.
In chemistry, the mass concentration ρ i (or γ i) is defined as the mass of a constituent m i divided by the volume of the mixture V. [1]= For a pure chemical the mass concentration equals its density (mass divided by volume); thus the mass concentration of a component in a mixture can be called the density of a component in a mixture.
Escalating tensions abroad could push oil prices to roughly $90 per barrel, according to one analyst. Prices weren't too far from those levels on Monday, as Brent hovered above $86 per barrel ...
The process has a high energy consumption, for example around 2,500 kWh (9,000 MJ) of electricity per tonne of sodium hydroxide produced. Because the process yields equivalent amounts of chlorine and sodium hydroxide (two moles of sodium hydroxide per mole of chlorine), it is necessary to find a use for these products in the same proportion.
≡ 1 mg × 1 long ton ÷ 1 oz t = 32. 6 g ton, assay (short) AT ≡ 1 mg × 1 short ton ÷ 1 oz t = 29.1 6 g ton, long: long tn or ton ≡ 2240 lb = 1 016.046 9088 kg: ton, short: sh tn ≡ 2000 lb = 907.184 74 kg: tonne (mts unit) t ≡ 1000 kg = 1000 kg: wey: ≡ 252 lb = 18 st = 114.305 277 24 kg (variants exist) zentner: Ztr. Definitions ...