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Otrada [13]
3 years ago
7

Please help with this question!

Chemistry
2 answers:
Arada [10]3 years ago
7 0
The Volume is 19g/cm3
Nookie1986 [14]3 years ago
7 0
The answer is 19g/cm
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How many joules of energy are produced when 3.0 × 10-28 kilograms of mass are lost? [(1 j = 1 ) and the speed of light = 3.00 ×
Aleksandr [31]

The equation that we are going to use on this problem is the famous Einstein field<span> equation. E = mc^2 where E is the energy (to be computed), m is the mass (</span>3.0 × 10-28 kilograms) and c is the speed of light (3.00 × 10^8). If we plug in the given into the equation the answer will be 2.7*10^-11 KJ or <span>2.7*10^-8 J. </span>

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3 years ago
Which fatty acid salt is soluble in water solutions?
Oliga [24]
Answer is (A)
Pottasium and Sodium salts are soluble in water. When these soaps are added to hard water. Hard water contains calcium or magnesium ions and they form Magnesium or Calcuim salts. These salts of magnesium and calcium precipitates out and are insoluble in water. This precipitation is called as dirt (the exact word for dirt is not acceptable here). This process is considered as the disadvantage of soap as well as using hard water.

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What is the ph level of water?
zloy xaker [14]
For pure water the PH level is 7
7 0
3 years ago
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A compound that conducts an electric current in aqueous solution or in the molten state.
makvit [3.9K]

Answer:

  • <em>A compound that conducts an electric current in aqueous solution or in the molten state is</em> a <u>ionic compound</u>.

  • E.g. NaCl (table salt)

Explanation:

Some examples of ionic compounds are NaCl, KF, KI, MgSO₄.

Ionic compounds are formed by positivie ions (named cations) and negative ions (named anions). The strong electrostatic atraction between cations and anions permits the formation of crystals, which are stuctures characterized by a regular pattern. In solid state the ions are in fixed positions.

In order to conduct electricity, the charged particles (cations and anions in the case of the ionic compounds) need to  move freely.

Hence, since in solid state,  ionic compounds do not conduct electric current. But, <em>in molten (liquid) state or in aqueous solution, ionic compounds conduct electric current because, then, the ions move freely.</em>

7 0
3 years ago
What is true about the formation of a bond?
timama [110]

Answer:

There is an overall release of energy when bonds form.

Explanation:

There is a general release of energy when bonds form. This energy is called bond energy.

Bond energy is involved in the breakdown or formation of one or more bonds between atoms of a molecule. Atoms bond with each other to achieve their electronic stability, that is, they move from a higher energy situation to a lower energy one. With this we can state that when the bond between atoms is formed, energy is released; therefore, its breakdown depends on energy absorption.

3 0
3 years ago
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