Answer:
(NH₄)₂CO₃ (aq) + MgSO₄(aq) → (NH₄)₂SO₄(aq) + MgCO₃ (s) ↓
Explanation:
We determine the reactants:
(NH₄)₂CO₃ → Ammonium carbonate
MgSO₄ → Magnesium sulfate
We determine the products:
(NH₄)₂SO₄ ; MgCO₃
All the salts from carbonates are precipitates:
(NH₄)₂CO₃ (aq) + MgSO₄(aq) → (NH₄)₂SO₄(aq) + MgCO₃ (s) ↓
Ratio is all 1:1. 1 mol of ammonium carbonate reacts to 1 mol of magnessium sulfate in order to produce 1 mol of ammonium sulfate and 1 mol of magnessium carbonate.
Answer:
If you have to choose only one answer, it is B.
Explanation:
Adding water - changes the volume of solvent
Number of moles of solute does not change because you do not adding solute.
the Molarity of solvent usually is not used.
If it is only one choice, it is B.
Answer:
-10778.95 J heat must be removed in order to form the ice at 15 °C.
Explanation:
Given data:
mass of steam = 25 g
Initial temperature = 118 °C
Final temperature = 15 °C
Heat released = ?
Solution:
Formula:
q = m . c . ΔT
we know that specific heat of water is 4.186 J/g.°C
ΔT = final temperature - initial temperature
ΔT = 15 °C - 118 °C
ΔT = -103 °C
now we will put the values in formula
q = m . c . ΔT
q = 25 g × 4.186 J/g.°C × -103 °C
q = -10778.95 J
so, -10778.95 J heat must be removed in order to form the ice at 15 °C.
Answer:
Explanation:
Hello,
In this case, we can compute the required volume by using the ideal gas equation as shown below:
Thus, solving for the volume and considering absolute temperature (in Kelvins), we obtain:
Best regards.
It posed a contradiction to Quantum Theory
