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3-10. An analysis of city drinking water for total hardness produced the following results (in ppm CaCO,): 228.3, 226.4, 226.9, 227.1, and 228.6. Calculate the following.



(a) mean



(c) range



(e) standard deviation



(b) median



(d) average deviation



3-12. If the true concentration of CaCO, in the drinking water described in Problem 3-10 is 225.9 ppm, calculate the absolute and parts per thousand error.

Make use of concept of mathematical infuction to find out “one” real world scenario implementing the concept.Describe the details of this scenario with respect to induction. Also give the mathematical proof of described scenario.


combustion of methane with air . the volumetric analysis of the products oon a dry basis revela sthe following

Sam is a greedy businessman who has opened N stores in a city.at various locations.

The locations of stores are stored in 1 2-Dimensional array.the coordinates of ith store are defined as follows:

starting point would be input[0][i] and ending location would be input[1][i].

for example:when i=0,input[0][0]=2 and input [1][0]=5,it means that the 0th store spans from 2 uniits to 5 units.

The greedy businessman wants to set up warehouse =s which can supply goods to these stores.

A warehouse can only be set up at a good location.A location is said to be good location if it is lying in the ranfe of [a,b],where a denotes the starting unit of a store and b denotes the end unit of any store S(a,b).

for example: a location ‘X’ is a good location with respect to the store (a,b) ifa<==X<=b.

Note:there can be more than one stores located at a particular.

Ex1:

i/p1:2

i/p2:{{1,2},{3,5}}

o/p:1

Ex2:

i/p1:3

i/p2:{{2,5,9},{3,7,10}}

o/p:3


If 45 m3 of combustion products at 1000 K of the following


composition: 6.2 % O2, 1.0% H2O, 12.3 % CO2, and the balance N2 are cooled at atmospheric pressure from 1000 K to 250 K, what is


the enthalpy change in the J?

Calculate the enthalpy change that occurs when 5 lb of CO2 change


state from 8 psia and a mixture containing 20 % liquid plus solid to


200 oF by a constant volume process.

Consider how the economy has performed throughout your life. Identify a time you believed the economy was in a peak or a trough. When was the economy expanding? When was it contracting? Describe the overall trajectory of the economy throughout your life.


1.   Give two factors that may affect a good gram staining technique output. Provide an explanation of how these factors influence the result. 



A 15 MW steam-driven turbine operates in the steady-state using 30




kg/s of steam. The inlet condition for the steam is p = 3000 kPa and




450 oC. The outlet condition is 500 kPa, saturated vapor. The




entering velocity of the steam is 250 m/s and the exiting velocity is




40 m/s. What is the transfer in kW for the turbine as the system?




What fraction is the heat transfer of the power generated?

Create a test driver for the ShapeCone Class. Make sure that the program will ask first for the height and radius of the Cone. The output of your program should look like this:





Radius: 2.4




Height: 3.5




Color: bue




Base Area: 18.09557




Volume: 21.1115

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