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Artist 52 [7]
4 years ago
7

Sodium thiosulfate, na2s2o3, is used as a "fixer" in black and white photography. identify the reducing agent in the reaction of

thiosulfate with iodine.2s2o32–(aq) + i2(aq) → s4o62–(aq) + 2i–(aq)
Chemistry
1 answer:
aev [14]4 years ago
8 0
Answer is: reducin agent in this reaction is thiosulfate (S₂O₃²⁻).
Balanced chemical reaction: 2S₂O₃²⁻(aq) + I₂(aq) → S₄O₆²⁻(aq) + 2I⁻<span>(aq).
Reducing agent is element or compound who loose electrons in chemical reaction. Sulfur in </span>thiosulfate change oxidation number from +2 to +5 tetrathionate anion (two<span> sulfur </span>atoms in the ion have oxidation state<span> 0 and two atoms have oxidation state +5).</span>
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What identifies an ion
bezimeni [28]

Answer:

Identifying whether or not an element is an ion is a very simple process. Identify the charge of the element. ... The number of electrons is equal to the atomic number minus the charge of the atom. Refer to an element with either a positive or negative charge as an ion.

7 0
3 years ago
A solid is 5 cm tall 3 cm wide and 2 cm thick it has a mass of 129 g what is the density
belka [17]
First you would multiply 5,3, and 2 to get a volume of 30. Density is mass over volume so you would then divide 129 by 30. You would get 4.3. The answer would be 4.3 g/cm^3
7 0
3 years ago
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There are eight consitutional isomers with the molecular formula C4H11N.
Dmitriy789 [7]

Answer:

See figure 1

Explanation:

We have to remember that in the isomer structures we have to <u>change the structure</u> but we have to maintain the <u>same formula</u>, in this case C_4H_1_1N.

In the formula, we have 1 nitrogen atom. Therefore we will have as a main functional group the <u>amine group</u>.

In the amines, we have different types of amines. Depending on the number of carbons bonded to the "N" atom. In the <em>primary amines</em>, we have only 1 C-H. In the <em>secondary amines</em>, we have two C-N bonds and in the <em>tertiary amines</em>, we have three C-N bonds.

With this in mind, we can have:

-) <u>Primary amines:</u>

1) n-butyl amine

2) sec-butyl amine including 2 optical isomers

3) isobutyl amine

4) tert-butyl amine

-) <u>Secondary amines:</u>

5) N-methyl n-propyl amine

6) N-methyl isopropyl amine

7) N, N-diethyl amine

-) <u>Tertiary amines:</u>

8) N-ethyl N, N-dimethyl amine

See figure 1

I hope it helps!

8 0
3 years ago
How many atoms are in 33 g of titanium (ti)? 22 ti 47.88 titanium
dmitriy555 [2]
Atomic mass Ti = 47.867 a.m.u

47.867 g ---------------- 6.02x10²³ atoms
33 g --------------------- ??

33 x ( 6.02x10²³) / 47.867 => 4.15x10²³ atoms

Answer D

hope this helps!

6 0
3 years ago
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Uranium has three common isotopes. If the abundance of Uranium-234 is 0.01%, the abundance of Uranium-235 is 0.71%, and the abun
e-lub [12.9K]

Answer:

238 amu

Explanation:

(234 * 0.0001) + (235 * 0.0071) + (238 * 0.9928) = 238

6 0
4 years ago
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