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What is a module namespace? How is it useful?
3. Consider the system, G + H <===> I + J at 25 °C. What is the total free energy change of this system if the total enthalpy change (heat content change) of the system is 2637 J/mol and the total entropy change is -0.78 kJ/mol.K ?
Is the system described in problem #5 endothermic or exothermic? _______________________
Is the system described in problem #1 endergonic or exergonic? _________________________
4. Consider the two systems shown below. These systems are coupled such that compound X carrying a phosphate group (X-P) transfers the phosphate to compound Y forming Y-P (that is Y carrying a phosphate group). (Pi represents unbound phosphate.)
Reaction 1: X-P + H2O <===> X + Pi ∆G = -43.0 kJ/mol Reaction 2: Y + Pi <===> Y-P + H2O ∆G = +29.4 kJ/mol
What is the ∆G for the combined system? ___________________________________________
Which reaction (system) is driving the other to proceed? _________________________________
1. Consider the system, A + B <===> C + D at 25 °C. What is the total free energy change of this system if the total enthalpy change of the system is -3145 J/mol.K and the total entropy change is +0.47 kJ/mol.K ?
Is the system described in problem #1 endothermic or exothermic?
______________________
Is the system described in problem #1 endergonic or exergonic? _________________________
2. If the total free energy change of the system X + Y <===> X-Y at 37 °C is +2618.2 J/mol and the total entropy change is -173.5 J/mol.K , what is the total enthalpy change?
Is the system described in problem #3 endothermic or exothermic? _________________________
Is the system described in problem #3 endergonic or exergonic? _________________________
How many grams of Sodium hydroxide would you need to make 1L of a 2M solution ?
Directions: Find the corresponding area between z = 0 and eachof thefollowing z-value. Use separate sheet of paper for your answers. 1. z = 0.96 2. z =− 1.74 3. z = 2.18 4. z =− 2.69 5. z = 2.93
what is volume of a 0.62 mol sample of gas at 10.6 and a pressure of 1.05
Organising Item storage in the computer can assist in ensuring that the Items that were stored in the
stock item list first are the first to be taken out. This will ensure that older stock is sold first. Conduct
some research on what data structure you can use in the storage of Item in the retail shop instead of
using a list.
2.1 Change the storage List of the Items in the Retail Shop so that the item stored first are the items
removed first when items are sold
1.5 A retail shop have functionality to sell. The sell function must take item name, and size as a
parameter. Removes the item from the stock and put that Item in the sold list. The sell function also
displays the sold item details, name, size, and days before expiry date. [2]
If item is not available in the stock a message must be displayed on the screen “no stock”;
1.6 An Items class need to be created in order to implement a complete Retail Shop. All items MUST/
FORCED to have the getPrice() function returns price of an item , setPrice(double price), returns
nothing, but set a price of an Item. [2]
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 Total
Drink coke 1 10; // this show that in the list there are 10 coke that are size of 1
Drink coke 2 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]
Find the energy transferred in 1 h by conduction through a concrete wall 2 m high, 3.65 m long, and 0.20 m thick if one side of the wall is held at 20∘C and the other side is at 5∘C.
#339914 on Dec 2023