Answer:
a= <em>In scientific notation</em>
6.96000×10⁵ Km
b =<em>In expanded notation</em>
0.00019 mm
Explanation:
Given data:
Radius of sun = 696000 Km
size of bacterial cell = 1.9 ×10⁻⁴ mm
Radius of sun in scientific notation = ?
Size of bacterial cell in expanded notation = ?
Solution:
Scientific notation is the way to express the large value in short form.
The number in scientific notation have two parts.
. The digits (decimal point will place after first digit)
× 10 ( the power which put the decimal point where it should be)
for example the number 6324.4 in scientific notation will be written as = 6.3244 × 10³
Radius of sun:
696000 Km
<em>In scientific notation</em>
6.96000 × 10⁵ Km
The expanded notation is standard notation of writing the numerical values which is normal way. The numbers are written as they are, without the power of 10.
Size of bacterial cell:
1.9 ×10⁻⁴ mm
<em>In expanded notation</em>
1.9/ 10000 = 0.00019 mm
Answer: Attractive forces between particels
Explanation:
I think Both protons and neutrons (and their anti-particles) froze out at 1013 K, about 0.0001 seconds after the Big Bang. Protons and neutrons are sub atomic particles of an atom that are found in the nucleus of an atom. Proton is the positively charge particle while the neutron has no charge. The proton positive charge accounts for the positive nuclear charge.
Answer:
1s² 2s² 2p³
Nitrogen
Explanation:
Excited state configuration: 1s² 2s² 2p² 3s¹
Unknown:
Ground state configuration = ?
Element symbol = ?
Solution:
Let us start by understanding what a ground state configuration entails:
A ground state configuration shows the lowest allowed energy levels of an atom. The excited state denotes when electrons have moved to higher energy levels away from their ground state.
The superscript in the configuration depicts the number of electrons in each of the sublevels.
We can use this number to identify the atom we are dealing with:
Total number of electrons = 2 + 2 + 2 + 1 = 7 electrons
The element with 7 electrons on the periodic table is Nitrogen.
Now, the ground state configuration:
In writing the electronic configuration of an atom, certain rules must be complied with.
- Aufbau's principle states that the sublevels with lower energies are filled up before those with higher energies. The order of filling is:
1s 2s 2p 3s 3p 4s etc
To fill the s-orbital = 2 electrons
p-orbital = 6 electrons
The outermost shell electrons are usually the ones excited.
Now, the 3s¹ shell is an excited one taking 1 electron from the second energy level;
The ground state configuration is 1s² 2s² 2p³
Answer:
Boiling- 212° F melting- 32°F
Explanation:
