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Darya [45]
3 years ago
12

In 1869, Mendeleev created a periodic table in which elements were ordered by weight and placed in groups based on their chemica

l properties. Mendeleev's decision to design the periodic table in this way allowed immediate advances in chemistry by.?
A.) Providing an explanation for the reactive properties of the alkali metals
B.) Providing a framework for models of electron configurations
C.) Predicting the existence of a group of undiscovered inert gases
D.) Predicting the properties of undiscovered elements in specific atomic weight ranges.
PLEASE EXPLAIN
Chemistry
2 answers:
ale4655 [162]3 years ago
7 0

Answer:

D

Explanation:

Elements propreties can be undestood by analisying of its electronic configuration, because the way that electrons fill up the orbitals will determine the atomic reactivity.

The periodic table is made in a way that elements with the same electronic configuration are at the same group, so this desing in its early stage were able to predict the properties of undiscovered elements, because of the periodic trends within the periodic table.

RSB [31]3 years ago
6 0
D he predicted 3(?) new element that we're later discovered
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3 years ago
Suppose you start with one liter of vinegar and repeatedly remove 0.08 L, replace with water, mix, and repeat. a. Find a formula
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Answer:

0.92^n

Explanation:

Given that :

Initial amount of vinegar = 1 Litre

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Since the amount removed each time is constant, then ;

Initial % = 100% = 100/100 = 1

. Using the relation :

Amount of vinegar in mixture :

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1 * (1 - 0.08/1)^n

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Hence,

For nth removal,

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7 0
2 years ago
How many molecules are in 3 moles of NaCl?
PtichkaEL [24]

Answer:

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To calculate : no. Of molecules =N

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3 0
3 years ago
Give the ground-state electron configuration for silicon (SiSi) using noble-gas shorthand. Express your answer in condensed form
nydimaria [60]

Answer:

[Ne] 3s² 3p²

Explanation:

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Using noble gas shorthand, the electronic configuration is reduced to;

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