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problems on Isotonic solution, Ethanol & STP.
1. Why is it significant that dialyzing solution be isotonic with blood?
2. A bottle of 180 proof alcohol is 90% ethanol and 10% water. What is the solvent in this solution?
3. describe STP
An ozone, O 3 , sparger system has been proposed for a water-treatment plant. The incoming water in a 80 m3 pond has been stripped of all ozone-demanding substances, and the pH is sufficiently low such that the ozone dec ...
In the reaction of meso-stilbene dibromide, KOH and triethylene glycol and heat, if the KOH has a purity of 85% and the remainder is water; why did the mixture appear to boil?
A 4.00g sample of an ideal gas occupies 1.24L at 23 degrees Celcius and 1.12bar. What will be its volume at 14 degrees Celcius and 1.50bar?
Explain why acidic rain produced as a result of excess sulphur dioxide in the atmosphere can cause degradation of buidings.
The volume of a sample of nitrogen is 6.00 liters at 35oC and 740 torr. What volume will it occupy at STP?
Why is the freezing point of water set at 32ºF? Why does the Fahrenheit scale start at 0º?
1. The stress induced in a column subjected to an eccentric load is given by the following equation; P/A = (S yc /[1+(ex/k 2 )sec((l/2k)(√(P/AE)))]) where P is the axial load (lb f ), A is the cross-sectional area of the ...
Why does the temperature of a solution increase if the reaction is exothermic? For example, in the precipitation of silver iodide, delta H is -110.7 kj. Why is this reaction exothermic and why does it cause the solution ...
For the reaction between permanganate ion and sufite ion in basic solution, the unbalanced equation is: MnO 4 - + SO 3 2- MnO 2 + SO 4 2- When this equation is balanced using the smallest whole number coefficients po ...
If 62.8 g Ca react with 92.3 g HCl according to the reaction below, how many grams of hydrogen gas will be produced, and how many grams of the excess reactant will be left over? Unbalanced equation: Ca + HCl → CaCl2+ H2 ...
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