Mass spectral measurements were made on 10 replicate low concentration Cu-EDTA samples: 173.7 , 130.0 , 146.3 , 161.3 , 130.3 , 199.7 , 151.3 , 155.9 , 145.3 , and 162.9 counts. Ten measurements of a blank had a mean measurement of 25.1 counts. A sample containing 3.00 μM Cu-EDTA gave a measurement of 1679 counts. Estimate the signal and detection limit for Cu-EDTA. Signal detection limit: counts
Concentration detection limit: μM

What precautions should you take to prevent injuries when dealing with heavy loads?

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise