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On heating sodium benzoate with soda lime ........... Is formed

Instillation Management Form

Installation ID| Installation Type| Installation Name and Address| Customer| Equipment| Types of Staff Required| Period of Staff assignment.

Polly Pipe is focused in placing aquariums at business customers. Customers can request several installations, but each installation is tailor-made for a specific customer. Facilities are classified by type. One or more employees are assigned to each facility. Because these facilities are often very large, they can include carpenters and masons as well as water installers. The facilities use equipment such as aquariums, air pumps and thermostats. There can be multiple computers in a facility.

Staff Management Record

Staff Number| Name| Type


Equipment Type Table

Type| Equipment

Identify the user and system requirements to design a database for the above scenario and design a relational database system using conceptual design (ER Model).

Continue the two sequences of numbers below and find an equation to each of the sequences:
n 1 2 3 4 5 6 7 Equation
an 2 5 9 14 20 27
bn 1 3 12 60 360 2520

The following are extracts from the financial records of COF (Pty) Ltd for the year ended 30 June 2021:

30 June 2021 R

  Extract from the statement of profit or loss and other comprehensive income for the year ended 30 June 2021

  Revenue from sale of goods

Cost of sales

Profit on sale of non-current assets Commission income

Audit fees


Interest expense (finance cost) Income tax expense

Profit for the year (after tax)

  920 000 490 000 31 000 23 000 84 000 72 000 20 000 87 000 123 000


30 June 2021

   30 June 2021 R

  30 June 2020 R


Trade receivables Trade payables Taxation payable Prepaid expenses Accrued expenses

 302 000 690 000 400 000

75 000 8 000 84 000

  292 000 720 000 385 000

60 000 2 000 88 000


Prepare only the “Cash generated by operations” section of the statement of cash flows for

the year ended 30 June 2021, using the indirect method

3. You place 50.0 mL of 0.500 M NaOH in a coffee-cup calorimeter at 35.00à ¡ µ ’C and add 25.00 mL of
0.500 M HCl, also at 35.00à ¡ µ ’C. After stirring, the final temperature is 37.21à ¡ µ ’C. [Assume the total
volume is the sum of the individual volumes and that the final solution has the same density (1.00
g/mL) and specific heat capacity as water (4.184 J/g.K).
(a). Calculate the qsoln (in J and kJ)
(b) Calculate the change in enthalpy, à ¢ ˆ †H of the reaction (in kJ/mol of water formed)

Create a do-while loop that asks the user to enter two numbers. The numbers should be added and the sum displayed. The loop should ask the user whether he or she wishes to perform the operation again. If so, the loop should repeat; otherwise it should terminate

Sample Run1

Enter two numbers: 3 15

Do you want another operation: Yes

Enter two numbers: 45 56

Do you want another operation: No

Output1: Sum = 119

Sample Run2

Enter two numbers: 33 150

Do you want another operation: Yes

Enter two numbers: -56 56

Do you want another operation: Yes

Enter two numbers: 58 15

Do you want another operation: Yes

Enter two numbers: 123 87

Do you want another operation: No

Output2: Sum = 466

The force F (in pounds) acting at an angle θ with the horizontal that is needed to drag a crate weighing W pounds along a horizontal surface at a constant velocity is given by

F = μW/(cosθ +μsinθ)

where μ is a constant called the coefficient of sliding friction between the crate and the surface (see the accompanying figure). Suppose that the crate weighs 150 lb and that μ = 0.3.

(a) Find dF /dθ when θ =30°. Express the answer in units of pounds/degree.

(b) Find dF /dt when θ =30° if θ is decreasing at the rate of 0.5°/s at this instant.

In the temperature range between 0°C and 700°C the resistance R [in ohms] of a certain platinum resistance thermometer is given by

R = 10 + 0.04124T − 1.779 × 10^(−5)T^2

where T is the temperature in degrees Celsius. Where in the interval from 0°C to 700°C is the resistance of the thermometer most sensitive and least sensitive to temperature changes? [Hint: Consider the size of dR/dT in the interval 0 ≤ T ≤ 700.].

Question 03

Write (and draw the graph of) a function which is

(a) Continuous on all points except at x = 1.

(b) Differentiable on all points except at x = 1.

(c) Non-differentiable at five points x = 1, x = 2, x = 3, x = 4 and x = 5.

Construct a Complex structure to represent a complex number with both real and imaginary components being real numbers. Request:

Write functions that calculate the sum, difference, product, and quotient of two complex numbers

Write a function that calculates the sum and difference of two complex numbers simultaneously.

Write a function that calculates the modulus of a complex number

Write a function that displays a complex number in the correct format (a+bj where a is the real component, b is the imaginary component)

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