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Alenkinab [10]
4 years ago
12

Compare and contrast the physical properties of tap water and table salt

Chemistry
1 answer:
kolbaska11 [484]4 years ago
6 0
The tap water is a liquid while the salt is a solid at room temperature. The tap water is colorless while the table salt is white in color. The density of the tap water is 1 g/cm^3 while that of table salt is 2.165 g/cm^3. The table salt has a boiling point of 1, 413 degree Celsius while the boiling point of water is 100 degree Celsius. The melting point of water is zero degree Celsius while that of table salt is 801 degree Celsius.
Both tap water and table salts are matter, which have weight and occupy space. The two of them are made up of smaller particles which are bonded together in a specified manner.<span />
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What mass of copper is produced when zinc is added to a solution containing 31.9g copper ii tetraoxosulphate vi
solmaris [256]

Answer:

12.7g of Cu

Explanation:

First let us generate a balanced equation for the reaction. This is illustrated below:

Zn + CuSO4 —> ZnSO4 + Cu

Molar Mass of Cu = 63.5g/mol

Molar Mass of CuSO4 = 63.5 + 32 + (16x4) = 63.5 + 32 + 64 = 159.5g/mol

From the equation,

159.5g of CuSO4 produced 63.5g of Cu.

Therefore, 31.9g of CuSO4 will produce = (31.9 x 63.5) / 159.5 = 12.7g of Cu

4 0
3 years ago
The most efficient way to determine whether a reaction is an exothermic chemical reaction is to use - sol
MrRissso [65]
The question is incomplete:
Complete question is
The most efficient way to determine whether a reaction is an exothermic chemical  reaction is to use —
A) an oxygen probe
B) a temperature probe
C) a pressure probe
D) a pH probe
...............................................................................................................
Answer:
Reaction is said to be exothermic in nature, if heat is evolved from the system. The resultant product formed is more stable. Since, during exothermic reaction, heat is given out be the system, temperature of system will increase. Hence, temperature is the probe to determine exothermic reaction.

Thus, correct answer is option B) a temperature probe 
3 0
3 years ago
Acetylating agents such as acetic anhydride react preferentially with primary amines, iodoacetate reacts preferentially with sul
nydimaria [60]

II think thihe answer is to be part of the acid to be honest

8 0
4 years ago
Determine which compound would lower the freezing point of water the most?
Nina [5.8K]
All those compounds are ionic.

Then they dissociate into ions when they are in water.

I will write the dissociation equations. The charges of the ions is indicated inside parenthesis.

KI -> K (+) + I (-) => two ions 

K2SO4 -> 2 k(+) + SO4 (2-) -> three ions

NaCl -> Na(+) + Cl(-) => two ions

KBr -> K(+) + Br(-)

As  you se every molecule of the compound K2SO4 dissociates into three ions, while the other compounds dissociate into two ions. Given that the decrase in the freezong point of water is proportional to the number of particles dissolved, the K2SO4 will lower the freezing point the most.

Answer: option B. K2SO4
5 0
3 years ago
An exothermic reaction is a chemical reaction that produces _____.
lana66690 [7]
I pretty sure the answer is a
8 0
3 years ago
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