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mr_godi [17]
2 years ago
9

How is the preodictable arranged by atomic mass, coloms , and rows

Chemistry
2 answers:
bearhunter [10]2 years ago
5 0

answer:an arrangement of elements in columns, based on a set of properties that repeat from row to row

Explanation:

hope this helps love <3

marta [7]2 years ago
5 0

Answer:

I dont get it

Explanation:

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Select the correct answer. Which substance is made of polymers? A. marble B. protein C. salt D. steel
Greeley [361]

Answer:

the answer is B proteins

Explanation:

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4 0
3 years ago
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What can help overcome a positive enthalpy of solution and allow a solid
IgorC [24]

Answer: D. An increase in entropy

Explanation:

Entropy is the measure of randomness or disorder of a system. If a system moves from  an disordered arrangement to an ordered arrangement, the entropy is said to increase and vice versa.

For a reaction to be spontaneous, the enthalpy of the solution must decrease and the entropy must increase.

To overcome a positive enthalpy of solution and allow a solid  solute to dissolve in water, an increase in entropy would make the reaction spontaneous as the system would move to a more disordered state.

4 0
3 years ago
I need help on thiss
Sergio039 [100]

The reaction is not balanced

<h3>Further explanation</h3>

Given

Reaction

2Fe(s)+3O₂(g)⇒2Fe₂O₃(s)

Required

The number of atoms

Solution

In a balanced chemical equation, the number of atoms in the compound that reacts (the reactants and products) will have the same number

Reactants : Fe(s)+O₂(g)

Fe = 2 atoms

O = 3 x 2 = 6 atoms

Products : Fe₂O₃(s)

Fe = 2 x 2 = 4 atoms

O = 2 x 3 = 6 atoms

The reaction is not balanced because the number of Fe atoms is not the same

The balanced reaction should be:

4Fe(s)+3O₂(g)⇒2Fe₂O₃(s)

8 0
3 years ago
What is the chemical formula for the binary compound nitrogen dioxide?
-Dominant- [34]
NO2 Hope this helped!
4 0
3 years ago
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A jug contains 2L of milk. Calculate the volume of the milk in m3
stepan [7]

Answer: 0.002 m³

Explanation:

We can use our unit conversions to find the volume in m³.

2L*\frac{1m^3}{1000L} =0.002m^3

8 0
3 years ago
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