The answer is (2). The electrolytic cell mechanism is to convert the electrical energy to chemical energy. So it need external energy source. And there is a similar one called voltaic cell which will convert the chemical energy to electrical energy.
Answer:
50mL
Explanation:
Using Boyle's law equation as follows:
P1V1 = P2V2
Where;
P1 = initial pressure (torr.)
P2 = final pressure (torr.)
V1 = initial volume (mL)
V2 = final volume (mL)
According to the information provided in the question,
V1 = 25.0mL
V2 = ?
P1 = 760 torr.
P2 = 380 torr.
Using P1V1 = P2V2
V2 = P1V1//P2
V2 = (760 × 25) ÷ 380
V2 = 19000 ÷ 380
V2 = 50mL
Answer:
Nothing is happening.
Explanation:
As written, nothing is going on. H2+O2+H2O represents a mixture of H2, O2, and H2O. We aren't even given the states, so they may all be gases, liquids/solids, or dissolved gases in a liquid (water).
If we had H2+O2 → H2O, we could say that hydrogen and oxygen are combining to form H2O, water. We should note, however, that the chemical equation is not balanced. There are two oxygen atoms on the reactant side, but only one on the product side. A balanced equation would read:
2H2 + O2 → 2H2O
It would be nice to indicate the physical states, such as:
2H2(g) + O2(g) → 2H2O(l)
Two gases, oxygen and hydrogen, combine to form liquid water.
Also missing from this equation is the energy that may be consumed, or released in this reaction. It would be nice to know, for example, that this reaction releases a lot of energy. Otherwise, we might wind up in the local headlines.
I think it is D I'm not positive
Mass of NaCl = 750 g
mass of water = 1000 kg
Kf = - 1.86 °C
moles of NaCl =
=
= 12.8 moles
molality of NaCl =
=
Δ Tf = Kf * m = -1.86 * 0.01282 = - 0.024 °C
