where nw is the number of moles of water kg−1 of solvent (about 55.51 mol kg−1) and ni is the moles of solute kg−1 of solvent. (Note: this definition requires that solution concentrations are expressed on a molal, not molar basis; a one molal (1 m) aqueous solution is eq...
Fertilizer recipes may call for concentrations in molarity units, such as millimoles per liter (mmol/L) or micromoles per liter (µmol/L) instead of ppm. Molar units are especially common in European countries and are also useful for understanding chemical reactions. A mole is 6.023 × 10...
and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!
The solubility of NaCl at 17 degrees celsius is 39 g per 100 ml water. If 83 g of NaCl is dissolved in 250ml of water at the same temperature, the resulting solution is: a) unsaturated b) saturated calculate the amount of solute, in mo...
Question: How many moles of water are there in 1.000 l at stp? Assume the density of water is 1000 kg/m3? Stoichiometry: Stoichiometry is the branch of chemistry which deals with the measurement of chemical substances in a chemical reaction. This measurement is...
Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!
Considering that six electrons are needed to oxidize a bromide anion to a bromate anion (reaction 6), this charge should produce 0.02 moles of bromate anions at 100% faradaic efficiency and convert 2/3 (1 M) of the bromide anions in the initial electrolyte (20 ml of 1.5 M ...
PEM electrolyzers have been grown in size tohydrogen productioncapacities on the order of hundreds of kg per day and megawatt-scale of electrical power per unit. As of the year 2020, several larger hydrogen production projects have been announced or are under construction worldwide with facilities...
An exemplary, non-limiting, reaction mechanism of reacting step (c) is shown in FIG. 1, wherein the hyperbranched polymer of step (b) comprises n moles of native peripheral reactive hydroxyl groups. Upon reaction with m moles of precursor compound comprising one peripheral epoxy functional group...
It will be understood that x=[MIII]/([MII]+[MIII]) where [MII] is the number of moles of MII per mole of compound of formula I and [MIII] is the number of moles of MIII per mole of compound of formula I. In one preferred aspect 0<y≦1. Preferably 0<y≦0.8. Preferably 0<y...