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4 years ago

Solve the following: Which one is more metallic

Chemistry

1 answer:

Degger [83]4 years ago

7 0

Answer:

aluminum

Explanation:

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Currently the periodic table is arranged by increasing atomic number and a clear pattern of properties. please select the best a

kotykmax [81]

The periodic table was arranged by Mendeleev in the increasing order of atomic numbers. The arrangement sees to it that the elements belonging to the same column has similar properties and the rows are arranged in increasing number of valence electrons. The answer here is true.

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3 years ago

Read 2 more answers

How do I get the answer

Mkey [24]

Answer:

when an entire species of animal dies and it is no longer present on the earth it is call extinct

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3 years ago

A substance that changes color when placed in an acidic or basic solution is called a

GREYUIT [131]

PH is your answer

Hope this helps!!

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4 years ago

You identify a molecule in a pizza that is a polymer; has oxygen, hydrogen, and sulfur atoms; and is hydrophilic. What kind of m

matrenka [14]

The kind of molecule in this pizza is a protein because it is a polymer, <u>hydrophilic</u>, and it's made up of oxygen, hydrogen, and sulfur atoms.

<h3>What is an amino acid?</h3>

An amino acid refers to a simple and organic chemical compound that consist of an acidic carboxyl group (COOH), a basic amino group ( $NH_2$ ), and a unique side chain group.

<h3>What is a protein?</h3>

A protein can be defined as a <u>hydrophilic</u>, macromolecule (polymer) that is formed as a result of the union of many amino acids.

Generally, a protein contains the following chemical elements:

Oxygen (O) atoms

Hydrogen (H) atoms

Sulfur (S) atoms

In conclusion, the kind of molecule in this pizza is a protein because it is a polymer, <u>hydrophilic</u>, and it's made up of oxygen, hydrogen, and sulfur atoms.

Read more on protein here: brainly.com/question/19145247

4 0

2 years ago

Consider the reaction pathway graph below.

LenaWriter [7]

Answer:

This is an endothermic reaction with a positive ΔHrxn.

Explanation:

From the question given above, we can see clearly that the energy of the product (Hp) is greater than the energy of the reactant (Hr). This simply means that the reaction is endothermic as the enthalpy change (ΔH) for the reaction will be positive.

Enthalpy change (ΔH) = Heat of product (Hp) – Heat of reactant (Hr)

ΔH = Hp – Hr = positive

NOTE: A reaction with positive enthalphy change (ΔH) is termed endothermic reaction.

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3 years ago