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viktelen [127]
3 years ago
5

Water plays a key role in chemical weathering by

Chemistry
2 answers:
tino4ka555 [31]3 years ago
8 0
The best answer for this question would be D) All of the above.
11Alexandr11 [23.1K]3 years ago
5 0
The answer would be D, all the above
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Estimate the standard internal energy of formation of liquid methyl acetate (methyl ethanoate, ch3cooch3) at 298 k from its stan
LenKa [72]

solution:

the reaction for formation of methyl acetate is\\CH_{3}OH+CH_{3}COOH----------->CH_{3}COOCH_{3}+H_{2}O\\standard internal energy \\\delta u=\delta H -\delta(pv)=\delta H -\delta n\times RT\\where \delta n=change in number of moles=0\\\delta u=\delta H\\=-442kj/mol

6 0
3 years ago
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Does anyone know how many grams of of fe2o3 react to produce 450 grams of fe
notka56 [123]

Answer:

14.4g

Explanation:

5 0
3 years ago
How does the number of electrons relate to an element's atomic number? Why?
RSB [31]
The number of protons in the nucleus of the atom is equal to the atomic number. The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom is equal to the sum of the number of protons and neutrons in the nucleus.
Hope it helped
8 0
4 years ago
Read 2 more answers
What must be true of the free energy change, trangle G, for a reaction to be spontaneous?
Vesnalui [34]

Answer:

A) It must be negative

Explanation:

A spontaneous reaction in Chemistry is that which is proceeding in a particular direction without the intervention of any external effect. As a spontaneous reaction proceeds (which can be relatively slow), free energy ΔG, which is the available energy for work, is released.

Gibbs free energy, ΔG, is released during a spontaneous process and hence the ΔG is negative because the reactants have more free energy than the products, hence, no energy input is needed for the reaction to proceed forward but rather an energy output. This is what makes a negative ΔG depict a spontaneous reaction.

6 0
3 years ago
A student decreases the temperature of a 547 cm3 balloon from 590 K to 210 K.
gtnhenbr [62]

Answer:

≈194.7

Explanation:

(547cm^3/590K) / (V2/210K)

V2 = 194.69 or 194.7

:D

4 0
2 years ago
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