Answer:
Assuming pressure is held constant,the question reduces to a ratio and proportion type of question where;
At constant pressure,
21.0ft³-55.0°F
11.0fy³=11.0ft³/21.0ft³×55°F
The temperature is 28.809°F≈29°F
KE = 1/2 * m * v^2
KE = 1/2 * 130 * 23^2
KE = 34385J
Answer:
8.6 mol
Explanation:
number of moles = molar concentration x volume in litre
number of moles = 2.33 M x 3.70 L = 8.6 mol
Answer:
A. Dark-colored moths become common after tree trunks become
dark.
Explanation:
I took the test
Answer:
Explanation:
The chemical equation considered is:
- <em>Zn(s) + 2H⁺ (aq) → Zn²⁺ (aq) + H₂(g)</em>
That is a redox reaction because one both oxidation and reduction are happening.
The element or species that is being reduced is that whose oxidation number is reduced.
On the left side, hydrogen, H, has oxidation number +1, which is shown by the superscrit + to the right of H: H⁺.
On the right side, hydrogen appears in its elemental form: H₂. Thus, its oxidation number is 0.
That means that the hydrogen ion is being reduced, and the half reaction that represents this is:
Which means that two H⁺(aq) ions gain 2 electrons to produce a molecule of H₂(g). The reduction reactions happen due to the gain of electrons.
