I think Thermodynamics is the aspect of a substance that contributes to a high or a low entropy. Entropy is the measure of chaos or disorder in a closed system. Entropy can be changed by a number of factors, for example, changing to a higher temperature increase entropy, change of states from solid to liquid and from liquid to gas causes changes in entropy, more bonds in a substance increases entropy, among other factors.
Answer:
The average rate is 2.84 X 10⁻³ Ms⁻¹
Explanation:
Average rate = -0.5*Δ[HBr]/Δt
given;
[HBr]₁ = 0.590 M
[HBr]₂ = 0.465 M
Δ[HBr] = [HBr]₂ - [HBr]₁ = 0.465 M - 0.590 M = -0.125 M
Δt Change in time = 22.0 s
Average rate = -0.5*Δ[HBr]/Δt
Average rate = - 0.5(-0.125)/22
Average rate = 0.00284 Ms⁻¹ = 2.84 X 10⁻³ Ms⁻¹
Therefore, the average rate is 2.84 X 10⁻³ Ms⁻¹
Answer: The forensic examination of substances involve a preliminary flame test.
Explanation:
The forensic chemical analysis of samples involves the flame testing which is one of the preliminary test. The materials are burned on a flame and the color of the flame is considered indicative of the elements present in the material.
The substances like Borax (sodium borate), Copper(II) sulfate, and boric acid burn with a characteristic green flame.
Hey there!
This atom has 26 protons, which means it is an iron atom, or Fe.
26 + 32 = 58
Charge is difference between protons and electrons.
26 - 24 = 2 (+)
We have 58, Fe, and 2+.
That means our answer is D. ⁵⁸Fe²⁺.
Hope this helps!
Answer:
I have an image that should help you!
Explanation:
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