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joja [24]
2 years ago
5

Mark each of these as a physical or chemical change, or both.

Chemistry
1 answer:
Daniel [21]2 years ago
8 0

1. Chemical

2. Chemical

3. Chemical

4. Chemical

5. Chemical

6. Chemical

7. Chemical

8. Chemical

9. Physical

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"The difference in our frame of reference between schools of wild Blue Fin Tuna and wild populations of many types of "land base
KengaRu [80]

Answer:

1. Wildlife

2. Seafood

Explanation:

1. Wildlife refers to the species which are not domesticated by the humans and they live as a wild organisms in the areas which are not interfered with the humans. In the given question, the wild creatures that live on the land therefore are considered a part of the wildlife.

2. Seafood refers to the species which are considered as food which humans get from the sea. In the given question, the Blue Fin fishes are considered a seafood therefore.

7 0
3 years ago
Part A Find ΔS∘ for the reaction between nitrogen gas and hydrogen gas to form ammonia: 12N2(g)+32H2(g)→NH3(g) Express your answ
inessss [21]

Answer:

\Delta S^{0} for the given reaction is -99.4 J/K

Explanation:

Balanced reaction: \frac{1}{2}N_{2}(g)+\frac{3}{2}H_{2}(g)\rightarrow NH_{3}(g)

\Delta S^{0}=[1mol\times S^{0}(NH_{3})_{g}]-[\frac{1}{2}mol\times S^{0}(N_{2})_{g}]-[\frac{3}{2}mol\times S^{0}(H_{2})_{g}]

where S^{0} represents standard entropy.

Plug in all the standard entropy values from available literature in the above equation:

\Delta S^{0}=[1mol\times 192.45\frac{J}{mol.K}]-[\frac{1}{2}mol\times 191.61\frac{J}{mol.K}]-[\frac{3}{2}mol\times 130.684\frac{J}{mol.K}]=-99.4J/K

So, \Delta S^{0} for the given reaction is -99.4 J/K

7 0
4 years ago
QUICK PLEASE HELP ONLY 2 MINUTES A group of engineers has a problem. Solving this problem requires the engineers to generate man
Mariana [72]

I would say a Think Tank would be the best creative process to help engineers generate ideas. Think Tanks are groups of people that help generate ideas to solve problems and grow companies.

8 0
3 years ago
The quantum mechanical model of the atom
ollegr [7]
No two electrons in an atom<span> can have exactly the same </span>quantum<span> numbers. Orbital </span>quantum<span> numbers tell you what energy level the electron is in. In the Bohr</span>model<span>, this represents how high the orbit is above the nucleus; higher orbits have more energy</span>
6 0
3 years ago
Read 2 more answers
In the deep space between galaxies, the density of atoms is as low as 106 atoms/m3, and the temperature is a frigid 3.0 K. What
Savatey [412]

Answer:

4.388*10^-^2^1

Explanation:

Given:

N/V= 106 atoms/m^3

T=3.0K

we know the values of

K_{b} =1.38*10^-^2^3 J/K

N_{A} =6.02*10^2^3/mol

Formula:

PV=NK_{b} T

rearranging the formula and substituting values

P=(NK_{b} T)/V

P=(106)(1.38*10^-^2^3)(3)

P=4.388 *10^-^2^1 Pa

5 0
3 years ago
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