I a sample for bod needs to be diluted by a factor of 002
If a sample for BOD needs to be diluted by a factor of 0.02 , calculate the volume of sample that will be used in the BOD bottle
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A gas mixture containing 80.0 mol% N2 and the remainder n-heptane flows through a pipe at a rate of 10.0 m3/h. The pressure is 0.90 atm and the temperature is 100°C. a. What is the molar flow rate of the gas in mol/h
a typical sedan ( like corolla Toyota) has unloaded mass of 1.2x10^3 kg. Determine the effective spring constant "k" for the suspension system for critical damping
The maximum and minimum dry unit weights of a sand were determined in the laboratory to be 104 lb/ft^3 and 93 lb/ft^3, respectively. what would be the relative compaction in the field if the relative density is 78%
#2: Let G be the graph with vertex set Z_2^n( the same as the n-cube) and with edge set defined as follows: {u, v} is an edge of G if u and v differ in exactly two coordinates (i.e., if ω( u, v) = 2). What are the eigenvalues of G?
Explain the effect of the following experimental errors on your results: a) You add hexane to the reaction flask instead of 1-hexene b) You use 3% hydrogen peroxide instead of 30% c) You forget to add potassium carbonate in the seperation step.
Given the initial effective stress state at a point within a soil mass (s_y=2.5 daN/cm2, s_x=1.5 daN/cm2, t_xy=t_xy=0.4 daN/cm2) and effective soil shear strength parameters at the same point
The next three questions relate to voice communications. Note that this topic was not covered in the class, but it is included to encourage self-learning. research, and analysis.
The pH of a 0.10 M nicotinic acid solution is 2.93. What is the approximate value of Ka for nicotinic acid, HC6H4NO2? Assume small percent dissociation. pH = ?log10[H+].
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