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nexus9112 [7]
2 years ago
8

Spring tides happen 2 times each month at the _and_phases

Chemistry
1 answer:
sladkih [1.3K]2 years ago
7 0

Answer:

Spring tides happen 2 times each month at the <u>New</u> and <u>Full</u> phases

Neap tides happen 2 times each month at the <u>First Quarter</u> and <u>Third Quarter</u> phases

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Try to rationalize the sign of ΔS∘rxn in each case.
bonufazy [111]

Answer:

a) decrease, gas

b) increase, gas

c) liquid

d) increase, solid

Explanation:

Entropy refers to the degree of disorderliness of a system. If the number of moles of gas increases from left to right in a reaction, the entropy of the system increases positively.

Similarly, when the number of liquid molecules remain constant, there could only be a very little increase in entropy.

However, solids have the least entropy and the entropy of a system decreases when a system yields solid products.

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3 years ago
A mixture of propane and butane is fed into a furnace where it is mixed with air. the furnace exhaust leaves the furnace at 305°
IgorLugansk [536]
In this item, I supposed, that we are determine the molar fraction of oxygen and carbon dioxide in the sample. This can be done by dividing their respective partial pressures by the total pressure of the sample.

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   CO2 : mole fraction = (33.57 mmHg) / (763.00 mmHg) = 0.044

Answers: O2 = 0.13
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3 0
3 years ago
Explain difference in melting points for the elements Na and Mg
Savatey [412]

Answer:

magnesium has a greater charge, there will be greater attraction between delocalised electrons and the positively charged ion.

Explanation:

I did this once and got it right I hope you get it right too

6 0
3 years ago
How does the number of valence electrons in an atom relate to the elements placement on the periodic table?
frez [133]
If the number of valence electron is one than it will be placed in group IA. elements of group IIA will have two valence electrons and so on....
8 0
4 years ago
When 2,4-hexadiene is protonated, a resonance-stabilized secondary allylic carbocation is formed. Draw the curved arrow notation
NemiM [27]

Answer:see the image for the structure of the allylic carbocation

Explanation:

When 2,4-hexanediene is protonated at the 5-position as shown in the image, a carbonation is formed which can be stabilized by resonance. The positive charge can be found on carbon 4 or carbon 2 due to resonance of the allylic carbonation. The both structures are shown and electron movements were depicted using curved arrow notation in the structures shown in the image attached.

4 0
3 years ago
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