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The Coronavirus disease has led to many deaths globally. In Gauteng, the number of deaths per week increases by 9.2% every week. Suppose this trend does not change and 82 deaths have been recorded this week. Determine the number of deaths that: a) were recorded 4 weeks ago b) will be recorded in 3 weeks’ time c) will be recorded in 6 weeks’ time
chloroform (CHCl3) is a known aesthetic. it is also used to produce the refrigerant carbon tetrachloride (CCl4) according to the reaction: CHCl3 (g) + Cl2 (g) CCl4 (g) + HCl (g)
write the law expression for the reaction. calculate the rate constant
Programming Tasks:
1. Write a program that will determine if one or both textboxes for username and
password contains empty string. If username or/and password is/are empty then it will
display a message that username and password is required. Otherwise, it will determine
if it correct or incorrect.
2. Write a program implementing Select Case statement that evaluates a character either a
vowel or a consonant.
3. Write a program implementing While loop statement, any Do loops statement, any For
loops statement that display your Name, School, Course and Year level 10 times with
the use of message box.
*** Make SCREENSHOTS of the forms you used in 1-3 and then copy all the CODES.
Screenshots should be taken during PROGRAM RUNTIME.
The standard enthalpy changes for the formation of aluminium oxide and iron (III) oxide are:
2 Al(s) + 3/2 O2 (g) Al203(s) ∆H= -1676 kJ/mol
2 Fe (s) + 3/2 O2 (g) Fe2O3 (s) ∆H= -824 kJ/mol
4 microfarad is charged to a potential of 100volts. Another 6 farad of a capacitor is charged to a potential of 300volts. These capacitors are now joined with plates of like charges connected together. Calculate -
1. The Potential Across Each After Joining
2. The Total Electrical Energy After Joining
3. Will The Energy Stored After Joining Be The Same As The Sum Of Energy Stored Before Joining
Given energy C1 and C2 of 2 microfarad and 3 microfarad respectively charged to a potential difference of 50volts and 100volts respectively. Calculate the loss in energy when two capacitors are connected in parallel
Describe the two irreversible in the cell cycle. Put the references.
Tshepo want to buy a big screen TV.She has five interests rates to choose from if she borrows the money from the bank.the cheapest option
*29%per year,compounded daily
*30%per year, compounded semi annually
*28.5%pet year, compounded weekly
*29.5%per year, compounded every 2 months.
5 mol of an ideal gas at a constant temperature if 0°c. If 2kj of energy is inputted into the system and the net change of internal energy ∆u=0, by what factor does the pressure of the gas change.
A gas is filled with oxygen at a temperature of 25°c to a pressure of 2atm. If the temperature is increased to 50°c and the pressure is increased to 5atm, by what factor does the density of the oxygen increase by.
#339914 on Dec 2023