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riadik2000 [5.3K]
3 years ago
12

I need help with this

Chemistry
1 answer:
Mademuasel [1]3 years ago
8 0

Answer:

87 (whatever unit its using)

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Given the balanced equation representing a reaction: 2h2o(l) + 571.6 kJ -> 2h2(g) + o2(g). What occurred as a result of this
Ivan

Answer: option D) energy was absorbed and entropy increased.


Explanation:


1) Given balanced equation:


2H₂O (l) + 571.6 kJ → 2 H₂ (g) + O₂(g).


2) Being the energy placed on the side of the reactants means that the energy is used (consumed or absorbed). This is an endothermic reaction.


So, the first part is that energy was absorbed.


3) As for the entropy, it is a measure of the disorder or radomness of the system.


Since, two molecules of liquid water were transformed into three molecules of gas, i.e. more molecules and more kinetic energy, therefore the new state has a greater degree of radomness, is more disordered, and you conclude that the entropy increased.


With that, you have shown that the right option is D) energy was absorbed and increased.

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4 years ago
29) The antimony in a sample of alloy weighing 0.250 g is converted to Sb2O5 and this substance is ignited to Sb2O4. If the Sb2O
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6 0
3 years ago
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What is the difference between a ribonucleotide and a deoxyribonucleotide?
Bumek [7]

Answer:

The answer to your question is: letter A

Explanation:

a. Ribonucleotides have a hydroxyl group on the 2 carbons of their sugar sub-unit.  This is the main difference between Ribonucleotides and deoxyribonucleotides, the first have hydroxyl group in carbon number two, while the second have a hydrogen.

b. Ribonucleotides contain a phosphate group.

c. Ribonucleotides have a hydrogen atom on the 1 carbon of their sugar sub-unit.

d. Ribonucleotides contain a sugar with five carbon atoms.

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An atom of sodium has 11 protons

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d..i think..he found plant cells

Explanation:

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