What method would you use to obtain pure water from a mixture of water and ink

Answer:

• First choice: it provides energy for the reaction.

Explanation:

Alkanes are relative stable molecules: saturated chains of carbon and hydrogen atoms, where each carbon atom is hydridized sp³ and is bonded to one or two carbon atoms and 2 or 3 hydrogen atoms.

The C-H bonds are slightly polar (carbon is more electronegative than oxygen).

On the other hand, the diatomic halogen molecule (F₂, Cl₂, Br₂, or I₂) is a non-polar molecule.

The mechanism of reaction between the alkane and the halogen is via free radicals: the halogen molecule must be splitted into two radicals (two atoms each with a free electron). This implies the rupture of the diatomic halogen, and this requires an important amount of energy. The role of the UV ligth is to provide the energy to split the halogen molecule and, in this way, start the reaction.

Then, the free halogen radical may react with the alkane molecule breaking a C - H bond and substituting the leaving hydrogen atom, forming a C - X bond (X represents the halogen atom).

As a demonstration of this role, you may find in the specialized textbooks this typical reaction:

• CH₄ + Cl₂ + energy → CH₃Cl + HCl

The  energy shown in the reactant side may be supplied as UV light or heat. So, the role of UV light is to provide energy to start the reaction.

Answer:

It provides energy for the reaction.

Explanation: gradpoint

Final answer:

The top individual action to curb atmospheric methane is reducing consumption of meat and dairy, as these industries are primary contributors to methane production. Also, minimising waste production can help, as waste decomposition in landfills generates considerable methane.

Explanation:

The most effective individual action to reduce atmospheric methane is to reduce consumption of meat and dairy products. Methane is produced by digestive processes in ruminant livestock, such as cows, sheep, and goats. These animals are typically raised for meat and dairy production, so by reducing our intake, we can help decrease the number of these animals, and thus decrease the amount of methane produced. This also has the effect of reducing the amount of grain required for livestock feed, since less livestock would be raised. This grain could then be used more efficiently to feed humans directly. Additionally, reducing waste production can also help mitigate methane production, because waste decomposition in landfills is another major source of atmospheric methane.

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Final answer:

Reducing livestock agriculture, implementing sustainable grazing practices, and feeding livestock supplements to lower methane production are key actions for reducing atmospheric methane. Additionally, transitioning to clean energy and planting trees can contribute to lowering greenhouse gas concentrations.

Explanation:

To reduce atmospheric methane, the most effective individual action would be decreasing livestock agriculture. Livestock, particularly ruminants like cows and goats, have microbiomes that produce methane during digestion. Additionally, implementing sustainable grazing practices and improving pasture management can mitigate carbon sequestration and offset methane emissions. Feed supplement programs that reduce methane production in livestock can also have significant impacts in reducing this potent greenhouse gas emission.

Another approach is to reduce activities that create anaerobic conditions conducive to methanogen growth, such as rice cultivation in flooded fields. Switching to clean energy sources like wind, solar, and hydropower, which do not emit methane, is also an effective strategy to combat global warming. Lastly, planting more trees can help absorb carbon dioxide, another greenhouse gas that works in tandem with methane to increase global temperatures.

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Answer:

C. 217.8 g

Explanation:

First, we find the weight of KF. notice they are 1:1 ratio. so the molar mass of K is 39.0983 and Fluorine is 18.998403

we add them together we get 58.09 g/mol

now to find the mass we do

* 3.175 mol

mol and mol cancel out, we left with 58.096 grams * 3.75

if you multiply you get 217.86 grams.

Answer & Explanation:

The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.