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Samples of three cards are drawn at random
from a population of eight cards numbered
from 1 to 8.
- Construct a histogram of the sampling
distribution of the means.
An aqueous solution of HCl is added to an aqueous solution of Ca(OH) 2 and a reaction occurs. 8.9x10 -
6 mol of (OH – ) ions are measured in the 750mL solution. Remember, Molarity = mol/L. Calculate the
concentration of the H + ions. Is the solution more acidic or basic?
An aqueous solution of H 2 S is added to an aqueous solution of NaOH and a reaction occurs. 3.7x10 -
4 mol of OH –1 ions are measured in the 550mL solution, calculate the number of moles of H 3 O +1 ions.
Remember, Molarity = mol/L. Calculate the concentration of the H + ions. Is the solution more acidic
or basic?
An aqueous solution of HF is added to an aqueous solution of K(OH) and a reaction occurs. The
concentration of H + ions is 2.68x10 -1 M. Calculate the concentration of the (OH) - ions. Is the solution
more acidic or basic?
An aqueous solution of H 2 (CO 3 ) is added to an aqueous solution of Li(OH) and a reaction occurs. The
concentration of (OH) - is 3.75x10 -5 M. Calculate the concentration of the H 3 O +1 ions. Is the solution
more acidic or basic?
An aqueous solution of HCl is added to an aqueous solution of Na(OH) and a reaction occurs. The
concentration of H + ions in the solution is 1.0x10 -5 M, calculate the concentration of the OH –1 ions. Is the
solution more acidic or basic?
The numbers of workers of a new fast food restaurant with seven outlets are 9 10 9 11 13 12 and 8 compute the population mean population variance and population standard deviation use the long method
f you have a circuit consisting of 4
4
resistors of equal resistance in series and the total voltage across all of them is 17
17
V
V
, what is the voltage across each of them?
27y-8(dy/DX)³=0
1.Show that each of these conditional statements is a tautology by using truth tables.
a) (p∧q)→ p
b) p → (p∨q)
c) ¬p → (p → q)
d) (p∧q)→ (p → q)
e) ¬(p → q)→ p
f) ¬(p → q)→¬q
2.Refer to 1, Show that each of these conditional statements is a tautology by using Propositional Logic
