Answer:
No, assuming that the salt/sugar is already dissolved
Explanation:
As long as the particle size is too big, it won't filter through. Therefore, if it is dissolved, it will pass through the filter.
If you were to throw rocks in there or something, and they are non-dissolvable, then yes.
8 electrons makes a full shell in an atom
Answer:
The pOH is 4, 44 and the solution is basic.
Explanation:
The pOH is a measure of the concentration of OH (hydroxyl) ions in the solution.
The pOH is calculated as :
pOH = -log (OH-)= -log (3.67 x 10-5 )= 4, 44. In this case, the solution is basic.
The p0H scale ranges from values of 0 to 14 (less than 7.0 is basic and greater than 7.0 is acidic, a pH = 7.0 is neutral)
Answer:
11.2 M
Explanation:
Given data:
Number of moles = 6.7 mol
Volume of solution = 0.6 L
Concentration /Molarity = ?
Solution:
Molarity:
It is number of moles of solute in to per kg or litters of solution. It can be calculated by the following formula.
Molarity = number of moles / Volume in L
Now we will put the values in formula.
Molarity = 6.7 mol / 0.6 L
Molarity = 11.2 mol/L
Molarity = 11.2 M
Reaction between aluminium and oxygen can be represented as:
4Al(s) + 3O₂(g) ----->2Al₂O₃(s)
Number of moles of aluminium = Mass of aluminium/ Molar mass of aluminium
=4.2g /26.981 g / mol
=0.155 mol
The equation shows that these react with 0.155 * 3/4 moles of O2 = 0.11 moles of O2.
1 mole of O2 at STP occupies 22.4 liter
volume of O2 = 0.11 moles ×22.4 liters / mol
= 2.61 liter of O2.
