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4 years ago

A change in the nucleus of an atom that converts the atom from one element to another element is called

Chemistry

2 answers:

Sergio039 [100]4 years ago

7 0

Answer: Transmutation

Explanation: Combustion, polymerization and neutralization are reactions that depends on electron exchange and molecular bonds rearrange. However, change the nucleus implies change the number of protons which requieres a lot of energy and also change the identity of the element.

Elements are defined by the number of protons in the nucleus, because this is a heavy particle compare to electron and the interaction between them gives special properties.

Breaking nucleus of an atom to transform into other is the principle of nuclear reactions, and the process that take place is transmutation.

disa [49]4 years ago

5 0

Combustion is the term used when something ignites
Neutralization is the term used when opposite pH acids and alkalis mix
Polymerization is the term used when monomers are chemically reacted to make polymers
Transmutation is the term used when an atom changes from one element to another

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How many electrons would be exchanged from lithium and fluorine

Vikki [24]

Fluorine - Seven electrons of it's own.

Lithium would give up one electron, so there for, fluorine is then left with eight.

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3 years ago

A sample of a compound contains 60.0 g C and 5.05 g H. Its molar mass is 78.12 g/mol. What is the compound’s molecular formula?

Inessa [10]

A sample of a compound contains 60.0 g C and 5.05 g H.

divide by molar mass of C(12) and H(1) to get molar ratio

C: 60/12=5 and H: 5/1=5

so C:H=5:5=1:1

total molar mass=78

divide by 1C+1H to find the formula: 78/(12+1)=78/13=6

compound is C6H6

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4 years ago

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Sindrei [870]

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3 years ago

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Rank the compounds in each set in order of increasing acid strength.

Viktor [21]

Answer:

See explanation

Explanation:

For this question, we have to remember the effect of an atom with high electronegativity as "Br". If the "Br" atom is closer to the carboxylic acid group (COOH) we will have an inductive effect. Due to the electronegativity of Br, the electrons of the C-H bond would be to the Br, then this bond would be weaker and the compound will be more acid (because is easier to produce the hydronium ion $H^+$ ).

With this in mind, for A in the last compound, we have 2 Br atoms near to the acid carboxylic group, so, we will have a high inductive effect, then the C-H would be weaker and we will have more acidity. Then we will have the compound with only 1 Br atom and finally, the last compound would be the one without Br atoms.

In B, the difference between the molecules is the position of the "Br" atom in the molecule. If the Br atom is closer to the acid group we will have a higher inductive effect and more acidity.

See figure 1

I hope it helps!

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4 years ago

PLEASE HELP

svp [43]

Because more than one substance was released (following a color change signifying a chemical reaction), the sample was indeed, a compound.

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3 years ago

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