Answer:
energy from a source that is not depleted when used, such as wind or solar power.
Explanation:
Answer:
2.06 × 10⁻¹⁰
Explanation:
Let's consider the solution of a generic compound AB₂.
AB₂(s) ⇄ A²⁺(aq) + 2B⁻(aq)
We can relate the molar solubility (S) with the solubility product constant (Kps) using an ICE chart.
AB₂(s) ⇄ A²⁺(aq) + 2B⁻(aq)
I 0 0
C +S +2S
E S 2S
The solubility product constant is:
Kps = [A²⁺] × [B⁻]² = S × (2S)² = 4 × S³ = 4 × (3.72 × 10⁻⁴)³ = 2.06 × 10⁻¹⁰
Answer:
D)Coat the disc with another pure substance, such as copper.
Explanation:
To make a mixture of the zinc, simply coat it with another pure substance such as copper. This will result in a mixture.
What then is a mixture?
- They are impure substances with indefinite composition.
- They retain their physical properties
- their constituents reacts differently to changed conditions
- They can easily be separated into constituents by physical methods.
We can see that coating the copper on the zinc does not alter the physical properties of the metal.
Most times, the copper will wear off and leave behind the zinc.
The metal coated can easily be removed and this signifies just a physical mix.
Simply put, MA = Force Out / Force in. That's the way it is usually stated. The force out is normally what you need to move. The force in is what you need to supply to get the force out. Most machines will give you an MA of more than 1. Some (like your arm) will give you less than 1 and others (like this one) will give you exactly one.
This one is frictionless, otherwise it would slip into less than one if it had friction.
Answer B
