All categories

3 years ago

Lewis atomic model proposed that electrons were arranged around the nucleus in what

1 answer:

7 0

Lewis had proposed that the valence electrons of any substance were arranged around its atoms in a cubic configuration. Later on, this was modified when it was learned that the electrons actually orbit the nucleus, similar to the planets orbiting the sun. Moreover, it is now deduced that the electrons are found in regions, known as electron clouds, and their specific, discrete location at a given point in time can not be determined.

You might be interested in

How many moles of Li3N will be created using 0.24 moles of Li in the given reaction? 6Li + N2 2Li3N

andreyandreev [35.5K]

6 Li + N2 = 2 Li3N

6 moles Li ---------> 2 moles Li3N
0.24 moles Li ------> ?

moles Li3N = 0.24 * 2 / 6

= 0.48 / 6

= 0.08 moles of li3N

hope this helps!.

7 0

3 years ago

Read 2 more answers

How many atoms are present in a sample of Potassium (K) weighing 33.49g?

madam [21]

Answer:

5.158 × 10²³ atoms K

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Explanation:

Step 1: Define

33.49 g K

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of K - 39.10 g/mol

Step 3: Convert

$33.49 \ g \ K(\frac{1 \ mol \ K}{39.10 \ g \ K} )(\frac{6.022 \cdot 10^{23} \ atoms \ K}{1 \ mol \ K} )$ = 5.15797 × 10²³ atoms K

Step 4: Check

We are given 4 sig figs. Follow sig figs and round.

5.15797 × 10²³ atoms K ≈ 5.158 × 10²³ atoms K

3 0

3 years ago

Which of the following would least likely be found in a wide valley?

UkoKoshka [18]

rapids is you answer hoped i helped

6 0

3 years ago

Read 2 more answers

How many molecules of water are there in 0.234 L of water

tankabanditka [31]

Answer:

7.82x10^24 molecules of water

Explanation:

H2O=18.015 g/mol Avogadro's #=6.022x10^23 molecules

0.234L x 1000g/1L x 1 mol H2O/18.015 g x 6.022x10^23 = 7.82x10^23 molecules of water

3 0

3 years ago

How does population density effect population growth?

Ronch [10]

Population growth decreases as the population density increases. This may be true for non-human populations but our species has developed the ability to modify the environment to sustain a huge population size.

hope this helps

IN exchange can u mark me as brainlist

7 0

4 years ago