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serg [7]
2 years ago
15

2. Use the graph below to answer the following questions.

Chemistry
1 answer:
BlackZzzverrR [31]2 years ago
6 0

Answer:

The graph represents an endothermic reaction.

The products have more energy than the reactants.

80kJ

160kJ

80kJ

160kJ

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All ions because that’s what I searched up and it came out
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3 years ago
Rank the following transitions in a hydrogen atom in order of increasing wavelength of electromagnetic radiation that could prod
Dmitrij [34]

Answer:

n=2 to n=4 < n=6 to n=8 < n=10 to n=12 < n=14 to n=16

Explanation:

According to Neils Bohr, electrons in an atom are found in specified energy levels. Transitions are possible from one energy level to another when the electron receives sufficient energy usually in the form of a photon of electromagnetic radiation of appropriate frequency and wavelength. The energy of this photon corresponds to the energy difference between the two energy levels. Thus the higher the energy difference between energy levels, the greater the energy of the photon required to cause the transition and the shorter the wavelength of the photon.

High energy photons have a very short wavelength. It should be noted that as n increases, the energy of successive energy levels decreases and transitions between them now occurs at longer wavelengths. Hence, the highest energy and shortest wavelength of photons are required for transition involving lower values of n because such electrons are closer to the nucleus and are more tightly bound to it than electrons found at a greater distance from the nucleus.

Hence transition involving electrons at higher energy levels occur at a longer wavelength compared to transition involving electrons closer to the nucleus. This is the basis for the arrangement of wavelengths required to effect the various electronic transitions shown in the answer.

3 0
3 years ago
What is the difference between intrusive igneous rocks and extrusive igneous rocks? We just learned this and I still don’t know
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The major visible difference between<span> the two are crystal size, </span>intrusive rocks<span> have a larger crystal/grain texture due to the slow cooling of magma below the earth surface which encourages the growth of larger crystals, while </span>extrusive rocks<span>, because of the rapid cooling at/above the earth's surface does the opposite. Hope I helped</span>
7 0
3 years ago
Read 2 more answers
Air is a mixture of gases that is about 78.0% n2 by volume. when air is at standard pressure and 25.0 ∘c, the n2 component will
ArbitrLikvidat [17]

Step first:

Since, 78.0 percent  N_{2} by volume is present in the air which implies there are 78 moles of N_{2} present in 100 moles of air.

Now,

Mole fraction of N_{2} = \frac{Moles of N_{2}}{Total moles of gases in the mixture}

Mole fraction  =\frac{78}{100} mol

= 0.78

Partial pressure is equal to the multiplication of total pressure and mole fraction.

Partial pressure = 0.78\times 1 atm (as 1 atm is atmospheric pressure)

= 0.78 atm.

Step second:

Henry's law constant is calculated by:

S_{g}=k\times P_{g}

where,

S_{g} is solubility of gas

P_{g} is partial pressure of gas

k is henry's law constant

Substitute the value of solubility and partial pressure to find the value of Henry's law constant in above formula:

4.88\times 10^{-4} M=k\times 0.78 atm

k = \frac{4.88\times 10^{-4}M}{0.78 atm}

= 6.25\times 10^{-4} M atm^{-1}

Thus, Henry's Law constant is 6.25\times 10^{-4} mol L^{-1} atm^{-1}.




5 0
3 years ago
Read 2 more answers
What is the name of an ideal-gas process in which no heat is transferred?.
PIT_PIT [208]

Answer:

Adiabatic. This is a process where no heat is being added or removed from the system. Or can be simply stated as: no heat transfer (or heat flow) happening in a system.

Explanation:

6 0
2 years ago
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