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Brut [27]
3 years ago
11

Which element is most likely similar to oxygen in that it will form an ion with a 2- charge

Chemistry
2 answers:
kozerog [31]3 years ago
5 0

Answer:

the answer is

Explanation:

sulfur

beks73 [17]3 years ago
3 0

Answer:

the answer is sulfur

Explanation:

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In which type of reaction do two or more substances combine to produce a single substance?
melomori [17]
The correct answer is option 1. Synthesis reaction is the chemical reaction which involves two or more substances combining to form a single substance. An example is burning magnesium. The balanced reaction is 2Mg + O2 = 2MgO.
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3 years ago
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How do freeze-thaw cycles cause weathering?
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Answer:

A. When water moves into a crack and freezes, it expands and forces the crack wider.

Explanation:

A crack in a rock can fill with water which then freezes as the temperature drops. As the ice expands, it pushes the crack apart, making the crack larger. When the temperature rises again, the ice melts, and the water fills the newer parts of the crack. Once the water freezes again when the temperature drops, the expansion of the ice causes further expansion to the crack.

8 0
3 years ago
Name the three states of matter, and the<br> physical changes that occur between them.
Nataly [62]

Answer:

Solid, Liquid, Gas

Solid to Liquid - Melting

Solid to Gas - Sublimation

Liquid to Solid - Freezing

Liquid to Gas - Vaporization

Gas to Solid - Deposition

Gas to Liquid - Condensation

Explanation:

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3 years ago
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Luca wants to identify and quantity the chemicals causing air pollution in a city, but he is using a manual air sampler to colle
xenn [34]

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Manual samplers are prone to effects of temperature, speed of wind and air concentrations.

Explanation

Manual samplers face several challenges that can act as drawbacks to obtaining accurate results. They are subjected to effects of sampling duration where long sampling times are needed to obtain adequate mass for detection. Manual samplers face challenges when measuring non-volatile species because particles are observed into the adsorption medium at a slower rate of diffusion.

5 0
4 years ago
Can all alkyl halides react with water to give alcohols?​
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Not all acid-catalyzed conversions of alcohols to alkyl halides proceed through the formation of carbocations. Primary alcohols and methanol react to form alkyl halides under acidic conditions by an SN2 mechanism.

Not all acid-catalyzed conversions of alcohols to alkyl halides proceed through the formation of carbocations. Primary alcohols and methanol react to form alkyl halides under acidic conditions by an SN2 mechanism.

In these reactions the function of the acid is to produce a protonated alcohol. The halide ion then displaces a molecule of water (a good leaving group) from carbon; this produces an alkyl halide:

Again, acid is required. Although halide ions (particularly iodide and bromide ions) are strong nucleophiles, they are not strong enough to carry out substitution reactions with alcohols themselves. Direct displacement of the hydroxyl group does not occur because the leaving group would have to be a strongly basic hydroxide ion:

We can see now why the reactions of alcohols with hydrogen halides are acid-promoted.

Carbocation rearrangements are extremely common in organic chemistry reactions are are defined as the movement of a carbocation from an unstable state to a more stable state through the use of various structural reorganizational "shifts" within the molecule. Once the carbocation has shifted over to a different carbon, we can say that there is a structural isomer of the initial molecule. However, this phenomenon is not as simple as it sounds.

<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>

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