Answer:
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there are five common types of clay, namely; kaolin, stoneware, ball clay, fireclay and earthenware
Explanation:
The pH of the finsl solution is equal to <u>2.93</u>
Concentration is the abundance of a constituent divided by way of the overall volume of an aggregate. several sorts of mathematical descriptions may be outstanding: mass concentration, molar concentration, variety concentration, and extent awareness.
C₁ = 0.170 m
V₁ = 17 ml = 0.017 L
C₂ = 0.170 M
V₂ = 22 ml = 0.022 L
C₁V₁ =C₂V₂
0.170× 0.017 L = 2.89 × 10⁻³ ------------- HCl
0.170× 0.022 L = 3.74 × 10⁻³ ------------ NaOH
⇒ 3.74 × 10⁻³ - 2.89 × 10⁻³ = 0.85 × 10⁻³
⇒ 3 + log 0.85
⇒ 3 + -0.07
⇒ pH = <u>2.93</u>
The concentration of an solution is a degree of the amount of solute that has been dissolved in a given amount of solvent or solution. A focused solution is one which has a rather huge amount of dissolved solute.
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<h3>
Answer:</h3>
23 grams Na
<h3>
Explanation:</h3>
- Molarity is the concentration of a solution in moles per liter.
- Therefore, a solution with a molarity of 3M contains 3 moles of solute in 1 liter of solution, while a solution with 2M contains 2 moles of solute in 1 liter of solution.
Thus, 3 M = 3 moles/liter
2 M = 2 moles /liter
The difference is 1 mole/Liter
But, 1 mole of sodium 23 g
Therefore;
Mass of sodium = moles × Atomic mass
= 1 mole × 23 g/mol
= 23 g
Therefore a 3 M solution contains 23 g of sodium more than a 2 M solution.
Answer:
The unknown element is Sb
Explanation:
The first thing we must note is that the unknown element must be a member of group 15 in the periodic table. This is clear from the fact that the two oxides formed are X2O3 and X2O5. This implies that the unknown element X must have a valency of 3 or 5. This corresponds to our knowledge that the outermost electron configuration of group 15 elements is ns2np3. Hence, group fifteen elements can have a valency of 3 or 5.
The electronic configuration of antimony is; [Kr]4d10 5s2 5p3. This implies that the atom is paramagnetic since there are three unpaired 5p electrons. The oxides of antimony are known to be amphoteric. An ampohoteric oxide reacts with both acid and base, hence the answer.
