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4 years ago

Using balanced chemical equations, explain the observed conductivity at the point of faint pink indicator color for:

Chemistry

1 answer:

ArbitrLikvidat [17]4 years ago

5 0

Answer:

This is required answer.

Explanation:

Given that:

1. by addition the ammonia to acetic acid

using balanced chemical equation:

ammonium acetate:

The balanced equation is:

NH₃ + H₂O ===> NH₄OH

when ammonia gas dissolves in water then we get the base in form of ammonium hydroxide.

When NH₄OH reacts with CH₃COOH then we get ammonium acetate and water

NH₄OH + CH₃COOH ===> [CH₃COO]- & NH₄+ & H₂O

So, we can say that,

when we are adding an acid and a base together then we get the product of H₂O and given elements.

2. addition of barium hydroxide to sulfuric acid:

The balanced equation is :

H₂SO4+ Ba(OH)₂--> BaSO₄+ 2H₂O

when acid and base reacts together than we get barium sulphate and water

when sulfuric acid and barium hydroxide.

Hence, this is required answer.

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Calculate the number of molecules present in 3.50 mol feo2. 2.11 x 1024 molecules 2.107 x 1023 molecules 3.50 x 1023 molecules

elena-14-01-66 [18.8K]

Calculate the number of molecules present in 3.50 mol feo2. 2.11 x 1024 molecules 2.107 x 1023 molecules 3.50 x 1023 molecules 3.5*(6.02*10^23)=2.107*10^24 molecules

<h3>What is molecules?</h3>

A molecule is the smallest unit of a substance that keeps its content and properties. It is made up of two or more atoms that are joined together by chemical bonds. Chemistry is built on molecules. The element symbol and a subscript indicating the number of atoms are used to identify molecules.

The fundamental building block of an element is an atom. They are made up of an electron-surrounded nucleus. An atom is considered to have valence electrons if its electron shell is not completely complete. A chemical (covalent) connection is created and a lower energy state is entered when two or more atoms join forces to share outer shell valence electrons. In an exothermic reaction, energy is released as atoms bond.

To learn more about molecules from the given link:

brainly.com/question/24722507

#SPJ4

6 0

2 years ago

Which of the following are examples of conservable quantities? a. potential energy and length c. mechanical energy and mass b. m

Blababa [14]

Answer:

Explanation:

7 0

3 years ago

Boron has primarily two isotopes, one with an atomic mass of 11.0 amu and another with an atomic mass of 10.0 amu. If the abunda

Masja [62]

Answer:

The atomic mass of the boron atom would be 10.135

Explanation:

This is generally known as relative atomic mass.

Relative atomic mass or atomic weight is a physical quantity defined as the ratio of the average mass of atoms of a chemical element in a given sample to the atomic mass of 1/12 of the mass of a carbon-12 atom. Since both quantities in the ratio are masses, the resulting value is dimensionless; hence the value is said to be relative and does not have a unit.

Note that the relative atomic mass of atoms is not always a whole number because of it being isotopic in nature.

Divide each abundance by 100 then multiply by atomic mass
Do that for each isotope, then add the two result. Thus

Relative atomic mass of Boron = (18.5/100 x 11) + (81/100 x 10)

= 2.035 + 8.1

= 10.135

5 0

3 years ago

Explain Newton's first law and create a real world scenario where the law is being used

ASHA 777 [7]

Answer:

Newton's first law is a object at rest stays at rest unless acted by and outside force

Explanation:

say there is a ball sitting still it is at rest well say a kid comes over and kicks the ball the kid is the outside force that puts the ball in motion so the ball goes from sitting still to moving by the outside force also known as the kid

6 0

3 years ago

This group of elements is located in the center of the periodic table

Tcecarenko [31]

Answer:

Transition metals are located in the center.

7 0

3 years ago