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Ivahew [28]
3 years ago
6

What reagent could be used to separate Br- from CH3 CO2 when added to an aqueous solution containing both.

Chemistry
2 answers:
Mila [183]3 years ago
8 0

Answer: A) AgNO_3

Explanation: All acetates are soluble.

All compounds of Alkali metals are soluble.

Bromides of Barium, and copper are soluble but that of silver is insoluble.

So, to separate bromide ion from acetate ion, we need to mix silver nitrate to the mixture.

Hence, the right choice is A) AgNO_3 .

AgNO_3(aq)+Br^-(aq)\rightarrow AgBr(s)+NO_3^-(aq)

Serjik [45]3 years ago
6 0
C is the answer for this!
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3 years ago
what is the molecular formula of a compound with an empiricla formula of ch and a molecular mass of 78
Dovator [93]

Answer:

C6H6

Explanation:

We can obtain the molecular formula from the empirical formula.

What we need do here is:

(CH)n = 78

The n shows the multiples of both element present in the actual compound. It can be seen that carbon and hydrogen have the same element ratio here. We then use the atomic masses of both elements to get the value of n. The atomic mass of carbon is 12 a.m.u while the atomic mass of hydrogen is 1 a.m.u

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The molecular formula is

(CH)n = (CH)6 = C6H6

6 0
3 years ago
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if an element [x] contains 8 protons, 8 neutrons and 8 electrons, the atomic number of the element is ?
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