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devlian [24]
2 years ago
10

Lab 2: paper chromatography of organic dyes Picture of questions below.

Chemistry
1 answer:
Anika [276]2 years ago
7 0

Answer:

The three primary colors used when mixing dyes or paints are red, yellow, and blue. Other colors are often a mixture of these three colors. Try running a chromatography test again with non-primary-color markers, like purple, brown, and orange.

Explanation:

<h3><em>Mixtures that are suitable for separation by chromatography include inks, dyes and colouring agents in food. ... As the solvent soaks up the paper, it carries the mixtures with it. Different components of the mixture will move at different rates. This separates the mixture out.</em></h3>

<em />

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What does the treatment do for Down syndrome?
mojhsa [17]

Answer:

There is NO cure for Down Syndrome

Explanation:

Down syndrome cannot be cured. Early treatment programs can help improve skills. They may include speech, physical, occupational, and/or educational therapy. With support and treatment, many people with Down syndrome live happy, productive lives

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3 years ago
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In which location of the digestive system will you find both physical AND chemical digestion?
d1i1m1o1n [39]

Answer:

The stomach

Explanation:

In the stomach, physical digestion occurs because of peristaltic contractions (wave like contraction in the lean muscle) and chemical digestion occurs because of stomach acid, hydrochloric acid, breaking down your food.

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2 years ago
What two layers of the earth are made of rock
vagabundo [1.1K]

Answer: There are two types of crust; oceanic and continental. Oceanic crust is denser and thinner and mainly com​posed of basalt.

Explanation:

The crust This is the outside layer of the earth and is made of solid rock, mostly basalt and granite.  Oceanic crust is denser and thinner and mainly com​posed of basalt.

3 0
2 years ago
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Based on the reaction, identify the products.
igomit [66]

Answer:

The reactants are MgF₂ and Be.

This is a single displacement reaction.

Explanation:

Chemical reactions are written like this:

reactant + reactant  =>  product + product

There may be more or less reactants and products on each side, separated by + the plus sign. The reactants are on the left and the products are on the right.

In the equation BeF₂ + Mg  =>  MgF₂ + Be, <u>the products (on the right side) are MgF₂ and Be</u>.

Since the total reactants are equal to the total products, every element that you see on the left must also appear on the right. On the left, the question gave you the elements "Be", "F" and "Mg". On the right, "Be" was missing, so it must be the missing product.

This is a <u>single displacement reaction</u> because one element that was in a pair was replaced by another.

All single displacement reactions look like this:

AB + C = AC + B          An element that was paired up switched places with another element that was not paired up.

In this reaction, "Be" was displaced. It started the reaction paired up with "F", but it was replaced by "Mg".

3 0
3 years ago
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Which of the following substance is being reduced in the following reaction.? Cu (s) + 2AgNO3 (aq) + 2Ag (s) + Cu(NO3)2 (aq) A)
nikklg [1K]

<u>Answer:</u> The correct answer is Option A.

<u>Explanation:</u>

Oxidation reaction is defined as the reaction in which an atom looses its electrons. Here, oxidation state of the atom increases.

X\rightarrow X^{n+}+ne^-

Reduction reaction is defined as the reaction in which an atom gains electrons. Here, the oxidation state of the atom decreases.

X^{n+}+ne^-\rightarrow X

For the given chemical reaction:

Cu(s)+2AgNO_3(aq.)\rightarrow 2Ag(s)+Cu(NO_3)_2(aq.)

The half reactions for the above reaction are:

Oxidation half reaction: Cu(s)\rightarrow Cu^{2+}(aq.)+2e^-

Reduction half reaction:  2Ag^+(aq.)+2e^-\rightarrow 2Ag(s)

From the above reactions, copper is loosing its electrons. Thus, it is getting oxidized.

Silver ion is gaining electrons and thus is getting reduced.

Hence, the correct answer is Option A.

3 0
2 years ago
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