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algol13
3 years ago
5

A process or reaction which takes in heat from the surroundings is said to be

Chemistry
1 answer:
Salsk061 [2.6K]3 years ago
3 0
<span>A process or reaction which takes in heat from the surroundings is said to be </span><u>Endothermic.</u>
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Draw the structure of a compound with the molecular formula C9H10O2 that exhibits the following spectral data. (a) IR: 3005 cm-1
Nikitich [7]

Answer:

The answer is 3-Phenylpropanoic acid (see attached structure)

Explanation:

From spectral data:

3005 cm-1 ⇒ carboxylic acid (broad band)

1670 cm-1 ⇒ C=C

1603 cm-1 ⇒ Aromatic C-C bond

H NMR frequency at 2.6 ppm, singlet, ⇒ OH with no surrounding protons, possible deshielding  (clearer investigation of  spectrum would be expedient).

Hence, our C9H10O2 compound has an aromatic ring and carboxylic acid group attached to it.

7 0
3 years ago
(10 points ) please help this is major grade .
erastova [34]

Answer:

absorbed

Explanation:

because black absorbs the light around it

4 0
2 years ago
Read 2 more answers
Why is butylamine stronger base than ammonia
andreyandreev [35.5K]
this  is   due  to  the  difference  in  electron  density. Butylamine  has  more   electron  density  than  ammonia.  Due   to  this   reason is  a  Butylamine    stronger  base than ammonia. BUtylamine  has  positive  induction  effect  of  -CH3  group  electron  density  on  N  atom  which  increases
8 0
3 years ago
Read 2 more answers
Help please
aleksklad [387]
C. The number of neutrons
Since Carbon 12 has 6 neutrons
And carbon 13 has 7 neutrons.
You know that elements have equal protons (atomic number) and electrons
5 0
2 years ago
Calculate the pOH of a solution that contains 3.9 x 10-5 M H3O+ at 25°C.
exis [7]

Answer:

Option b. 9.59

Explanation:

First, let us calculate the pH. This is illustrated below:

[H3O+] = 3.9 x 10-5 M

pH = —Log [H3O+]

pH = —Log [3.9 x 10-5]

pH = 4.41

Recall: pH + pOH = 14

4.41 + pOH = 14

Collect like terms

pOH = 14 — 4.41

pOH = 9.59

6 0
3 years ago
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