Answer:
B. Reduction occurs at the cathode.
Step-by-step explanation:
That's the <em>definition</em>: The cathode is the electrode at which reduction occurs.
A is <em>wrong</em>. The cathode gains electrons through the external circuit.
C is <em>wrong</em>. The cathode has the electrons, so cations move toward it.
D is <em>wrong</em>. Reduction occurs at the cathode, so the oxidation number decreases.
It depends on how steep the ramp is but no they wouldn't because the side safe flat and flat things cannot travel down ramps quickly.
The mass is 5kg
I hope this helps
1. c
2. It resembles the crystalline structure of ice
3. It should be eco-friendly
4. Similar- still falls in rain or snow when the cloud is full enough
Different- adding chemicals to quicken the process, not waiting for it to happen naturally
5. Droughts- plants dying, no crops- no food
Answer:
72g of H2O.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is given below:
2H2 + O2 —>2H2O
Next, we'll determine the mass of O2 that reacted and the mass of H2O produced from the balanced equation.
This is illustrated below:
Molar Mass of O2 = 16x2 = 32g/mol
Molar Mass of H2O = (2x1) + 16 = 18g/mol
Mass of H2O from the balanced equation = 2 x 18 = 36g
Summary:
From the balanced equation above,
32g of O2 reacted to produce 36g of H2O.
Now, we can obtain the mass of H2O produced when 64g of O2 react as follow:
From the balanced equation above,
32g of O2 reacted to produce 36g of H2O.
Therefore, 64g of O2 will react to produce = (64 x 36)/32 = 72g of H2O.
From the calculations made above, 72g of H2O is produced from the reaction.