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0.1m3 of gas is compressed from pressure of 120KN/m2 and temperature 250C to a pressure of 1.2MN/m2 according to the law PV1.2 = constant.
Determine,
(a) The work transferred during the compression,
(b) The change in internal energy,
(c) The heat transferred during the compression
Assume , cv=0.72kJ/kgK and R=0.285KJ/kgK
A 90000 lbs truck is braked to a stop in 95 ft. from an initial speed of 95 ft/s . How
much force was required ?
1. Consider an example in which 18.0 grams of C6H12O6 is dissolved in 1 kg of water. What is the molality of the resulting solution?
2. What is the mole fraction of sulfur dioxide (SO2) in an industrial exhaust gas containing 128.0 g of sulphur dioxide dissolved in every 1500 g of carbon dioxide?
3. A 123.0 g sample of hardwater is found to contain 0.015 g of calcium carbonate (CaCO3). What is it's concentration in ppm?
Supposed two air fryers are tested. Let D be the random variable representing the number of defecting air fryers that occur. Find the values of random variable D. Make a table showing the possible outcomes with its corresponding values for the random variable D.
Calculate the molarity of a solution containing 2.8 moles of ethyl alcohol (C₂H6O) in 500mL of solution.
1.1 A Retail has name, a List containing Items available in the stock and another List containing sold items. [2] 1.2 A Retail have functionality to view available stock, that prints Class name of item, name of Item, size of item and total number of items that have same name, and size. [5] EXAMPLE
ClassName Item name Size Drink coke 1 Drink coke 2
Total
10; // this show that in the list there are 10 coke that are size of 1
5; // this show that in the list there are 5 coke that are size 2 Sizes in drinks means litres.
Hint: Items are the same if their class name, item name and size are the same.
1.3. A retail Shop has a functionality to add item into the stock list. The add item takes a parameter the Item to be added on stock. [2] 1.4 A retail shop also has a functionality to calculate total sales that returns double sum of money made from all sold items. [2]
Sample 3 cards are drawn without replacement from a population of five cards numbered 2 to 6
How many possible samples can be drawn?
List all the possible samples and compute the mean of each sample.
Construct the sampling distribution sample means.
What is the molality of 60.5% by mass of nitric acid (HNO3) solution?
What are the mole fractions of hydrochloric acid (HCI) and water in a 20% (w/w) aqeous HCl solution?
Molality & Molarity 1.
Calculate the molality of a solution containing 10.8g of ethylene glycol (C2H6O2) in 360g of water.
#340153 on Dec 2023