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Mnenie [13.5K]
3 years ago
10

2. Bart finds a solid shiny

Chemistry
1 answer:
notsponge [240]3 years ago
7 0

Answer:

1. Density of metal object = <em><u>11000 kg / m3</u></em>.

2. Could the object be gold = <em><u>No,because the density of gold is 19300 kg / m3</u></em>.

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Which phase change results in atoms with the highest kinetic energy? A. Boiling B. Melting C. Freezing D. Condensing
suter [353]

Answer: Boiling because it makes the molecules in water bounce around.

Hope it helps.

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3 years ago
A boy inherited genes that would ordinarily allow him to grow tall.his growth is stunted as a result of poor nutrition.this is a
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It is an example of how the boys environment affected him, making him an outlier to what should typically happen. Hope this helps!
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2 years ago
A compound with molecular formula C5H10O2 has the following 1H NMR spectrum: 1.15 (t, 3H), 1.25 (t, 3H), 2.33 (q, 2H), 4.13 (q,
Vilka [71]

Answer:

Ethyl propionate

Explanation:

Calculating the double bond equivalence as:

DBE =  C - (H/2) - (X/2) + (N/2) +1

Where  

C is the number of carbon atoms

N is the number of nitrogen atoms

X is the number of halogens

H is the number of hydrogen atoms

So, according to the formula, C_5H_{10}O_2

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It means there is one double bond or one ring.

from the NMR signal, it is clear that compound has two triplet and two quardrate group that means two -CH3 and two -CH2 groups are present.

From the splitting information, it is clear that each the -CH2- group is next to a -CH3, and vice-versa. In this case ring structure is not possible.

The chemical shift of two protons 4.13 ppm(q, 2H) is for protons next to an O atom, therefore, compound must have

-OCH_2CH_3.

Then the signal at 2.33 is for a -CH2-group next to a C=O. So compound must have a structure CH3-CH2-C=O. Now, there is only one way to complete the structure - by bonding the O to the C=O carbon.

So the compound is ethyl propionate

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. Where does the corn get energy?
dedylja [7]

Answer:

From the Sun.

Explanation:

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7 0
3 years ago
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