Answer:
B. The correct ratio is 3:1:1:3
Explanation:
According to this question, the following chemical equation was given:
CH3COOH + Al(OH)3 → Al(CH3COO)3 + H2O
This equation is obviously not balanced because the number of atoms of each element on both sides of the equation is not equal or the same. To balance the equation, we make use of coefficients as follows:
3CH3COOH + Al(OH)3 → Al(CH3COO)3 + 3H2O
- There are now 6 moles of C on each side
- There are now 15 moles of H on each side
- There are now 9 moles of O on each side
- There is now 1 mole of Al on each side
The correct ratio of each compound is in the order 3:1:1:3
Answer:
warming up the solution.
Explanation:
- A saturated solution is a chemical solution containing the maximum concentration of a solute dissolved in the solvent. The additional solute will not dissolve in a saturated solution.
- Supersaturated solution is a solution that contains more of the dissolved material than could be dissolved by the solvent under normal circumstances.
- A saturated solution can become supersaturated when it is cooled.
- Also, we can form a saturated solution from a supersaturated solution via warming up the solution:
<em>The solubility of solid solutes in liquid solvents increases as the solvent is warmed up.</em>
Explanation:
1)Noble gases have stable valence electron of 2 and 8.
2)B- ionic compounds do not require sharing of electron.
3)B- sodium and oxygen will likely form a covalent compound.
4) C- potassium
5) A- polar bonding
6)
Answer:
When a solid object is heated, it expands. This happens because the atoms in the object start vibrating or moving faster.
Explanation:
<u><em>If you need a longer explanation, let me know! If not, I hope I helped. </em></u>
Answer:
Explanation:
<u>1) Data:</u>
a) mass of solute = ?
b) volume of solution = 1.25 liter
c) M = 2.92 mol/liter
d) solute NaOH
<u>2) Formulae:</u>
<u />
a) Molarity, M = number of moles of solute / volume of solution in liters
b) mass in grams = molar mass × number of moles
<u>3) Solution:</u>
a) <u>Calculate number of moles of solute</u>:
- M = number of moles of solute / volume of solution in liters
⇒ number of moles of solute = M × volume of solution in liters
⇒ number of moles of solute = 2.92 mol/liter × 1.25 liter = 3.65 mol
b) <u>Molar mass of NaOH = 39.997 g/mol </u>(you can take this number from internet or calculate it using the atomic masses of Na, O, and H).
c) <u>Calculate the mass of solute:</u>
- mass in grams = molar mass × number of moles = 39.997 g/mol × 3.65 mol = 145.98905 g = 146. g
The answer must be reported with 3 significant figures, so it is 146. g.