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media and social media for a false argument aimed at education in South Africa. using concepts related to critical rationalism AND empiricism, why it is a false argument and how we can go about getting to the truth of the matter
Structure of benzaldehyde
Consider the chemical equation: 2NaBr + Caf
+ 2NaF + CaBra.
The molar ratio between NaBr and CaF2 is
molar ratio between
NaBr and NaF is
the molar ratio, molar ratio between NaBr and
CaBr2 is
, the molar ratio.
*Note, if a ratio results in two of the same number, 3:3 for example, we reduce it to
1:1 and call it a "one-to-one ratio.
Explain why different products are obtained in the electrolysis of molten
potassium iodide and in the electrolysis of aqueous solution of potassium iodide
If each cell in the battery has an output of approximately two volts,
draw a labelled sketch diagram of a battery with a six volt output. On
the diagram indicate the anode and the cathode.
2. The director of a secretarial school believes that its graduates can type more than75
words per minute. A random sample of 12 graduates has been found to have an
average of 77.2 words per minute with a standard deviation of 7.9 words per minute
in a typing test. Using the 0.05 level of significance, test the claim of the director.
2. Recommend and prepare a pricing strategy for a videographer that aligns with her pricing objectives ( assume / suggest these objectives ) and considers relevant costs , demand , and revenues ?
1.In the course of an experiment, 15 mosquitoes were put in each of 120 jars and were next subjected to a dose of D.D.T. After 4 hours the number alive in each jar was counted and the following frequency distribution was obtained:
No. of mosquitoes alive
0
1
2
3
4
5
6
7
8
Frequency (no. of jars)
2
12
14
22
28
17
13
10
2
Find the frequencies that one would expect on the assumption that each mosquito has a common probability of survival.
A buffer system is prepared by mixing 2 mols of HF(aq) (Ka=7.1 x 10^-4) and 1.8 moles NaF(aq) in a 500 mL solution. A) calculate the pH of the buffer. B) calculate the pH of the buffer after adding 0.2 mols of HCl. C) calculate the pH of the buffer after adding 0.3 mols LiOH
25.0 mL of 0.100 M HC2H3O2 is titrated by a 0.100 M NaOH. A) Write the net ionic equation. B) calculate the pH of the solution after adding 10 mL of NaOH
