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Natalija [7]
4 years ago
9

What test reagent used in this experiment will distinguish a soluble cl- salt from so42- salt? what is the distinguishing observ

ation?
Chemistry
1 answer:
storchak [24]4 years ago
8 0

The two ions to be distinguished are : Chloride ion and sulphate ion

The chloride ion can be identified by addition of silver nitrate to the solution containing chloride ion

On addition of silver nitrate, chloride ion will react with silver ions to form a white precipitate of silver chloride

The reaction is

Ag+ (a)  + Cl-(aq)  ---> AgCl(s)

the solution containing sulphate ion can be identified by adding barium chloride

Ba+2  + SO4^-2   ----> BaSO4(s), white ppt

thus barium chloride reacts with sulphate ion to form white ppt



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how can an xray image show differences between bone and soft tissues, such as muscles and lungs? How might the atoms that make u
enyata [817]

Answer with Explanation:

1. An "x-ray image" shows the difference between the bones and soft tissues because the <em>bones appear white in color </em>while the <em>soft tissues appear gray in color.  </em>

2. The reason behind the difference in the appearance of bones and soft tissues on the x-ray film is their<em> density.</em> <u><em>Bones are denser than soft tissues</em></u>, which means that<em> its atoms are closely-knitted when compared to the soft tissues that are far apart from each other. </em>This allows the<em> </em><em>x-ray radiation to be absorbed by the bone </em>while <em>it passes through most of the soft tissues.</em>

This is the reason why pregnant women are advised not to undergo an x-ray examination because<u><em> the fetus is denser and it will surely absorb the x-ray radiation.</em></u>

5 0
4 years ago
If 63.5 mol of an ideal gas is at 9.11 atm at 42.80 °C, what is the volume of the gas?
Anastaziya [24]

The volume of the gas is 180.26 L, if there are 63.5 mol of an ideal gas at 9.11 atm at 42.80 °C.

Applying the ideal gas law PV= nRT

After rearranging the aforementioned expression, the volume might then be found as: V= n R T/ P.

Consequently, V= 63.5 mol, 0.0821, 315 K, and 9.11 atm equal 180.26 L.

<h3>How is the ideal gas equation defined?</h3>

The ideal gas equation is PV = nRT. In this equation, P denotes the ideal gas's pressure, V its volume, n its total amount, expressed in moles, and R its resistance for the universal gas constant, and T for temperature.

To know more about Ideal gas, visit-

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3 0
2 years ago
Which element has a complete valence electron shell?
Norma-Jean [14]
The element that has a complete valence electron shell is argon (Ar) since it is a noble gas in the last group on the periodic table.
8 0
3 years ago
Read 2 more answers
Which of the following describes a Brønsted-Lowry base?
Mice21 [21]
__ Brainliest if helped! 

Bronsted-Lowry definition of Bases are Proton acceptors, 

or i.e. "A hydrogen ion acceptor" 

4 0
4 years ago
Read 2 more answers
A buffer solution is prepared by adding NaC2H202
olganol [36]

Shift to reactants(left)

<h3>Further explanation </h3>

A buffer solution is a solution that can maintain a good pH value due to the addition of a little acid or a little base or dilution.

The buffer solution can be acidic or basic

Acid buffer solutions consist of weak acids and their salts.  

A buffer solution of NaC2H202    and HC2H2O2 (acetic acid) is included in the acid buffer

So :

a slight addition of acid (H⁺) will be balanced by the conjugate base

the addition of a small base (OH⁻) will be balanced by the weak acid

With the addition of acid (H +), the equilibrium will shift to the left, in the formation of CH3COOH. The added acid will be neutralized by the conjugate base component (CH3COO−).

7 0
3 years ago
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