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Vlad1618 [11]
3 years ago
14

I really need these solved, it’s asking for half equations!!

Chemistry
1 answer:
Levart [38]3 years ago
7 0

Answer:

Net equation: Cu + 2Ag+  ⇒ 2Ag + Cu2+

Explanation:

Cu + 2N03- + 2Ag+ ⇒ 2Ag + 2NO3- + Cu2+

The 2NO3- cancel out since they're spectator ions

∴ Cu + 2Ag+ ⇒ 2Ag + Cu2+

Half equations are:

Cu ⇒ Cu2+

2Ag+ ⇒ 2Ag

Balancing both sides of each equation with electrons will lead back to the Net equation.

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Which is a function of nucleic acids?
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The answer to your question is: i have to answer correct first number three and second number one.

Explanation:

1.-regulate cell processes : Nucleic acids are located inside the nucleus and the nucleus is the brain of the cell, it says what functions must be done, then I think this option is correct.

2.- provide structure : Nucleic acids are large molecules but very weak, the couldn't be able to give structure. This option is wrong.

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4.- fight disease: Nucleic acids are useful to transmit genetic information, and saying the functions a cell must do but fight against diseases is not one of their functions.

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if matter is made of many tiny particles, why does it seem to be continuous? Why doesn’t water seem to behave like sand?
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Answer:

Explanation:

if matter is made of many tiny particles, why does it seem to be continuous? Why doesn’t water seem to behave like sand?

Water and some other molecules exhibit a property know as hydrogen bonding.  A hydrogen atom in one molecule of water is attracted to the oxygen in a neighboring molecules of water.'

The force of this attraction is less than a standard chemical attractive force, but it is real and measurable.

When billions and trillions of water molecules are held together by this force, the small amount of molecule to molecule force is added up to a tremendous force.  That is why even though sulfur is below oxygen on the periodic table, hydrogen sulfide is a gas while hydrogen oxide is a liquid at room temperature.

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The strong polar bond between water molecules creates water cohesion.

As they are cooled, aggregates of most other substances increase monotonically in density becoming progressively heavier -- the colder they are, the more tightly packed their molecules become. But water possesses a peculiar physical feature: ice expands, so it is lighter than liquid water (i. e., ice floats). When water trapped in rock crevices freezes, it breaks rocks (and pipes).

 

Water is vital to all known life forms, that is, all those on planet Earth. It is so integral to life as we know it that many biologists cannot even envision life without water (although that might be possible). Indeed, the physical properties of water dictate critical thermal limits for living systems.

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