Answer:
An element is made of one type of atom, while a compound is two or
more types of atoms combined.
Explanation:
An element is a distinct substance that cannot be split up into simpler substances. Elements are substances that consists of only one kind of atom.
Compounds are substances composed of two or more kinds of atoms/elements joined together in a definite grouping.
- There are over a hundred elements known to date.
- Each one of the elements is symbolized by a capital or a capital letter followed by a small letter derived from English, Latin or Greek
- Examples are copper, gold, iron
- The properties of a compound are distinct and different from those of the individual elements that are combined in its make up.
- There are several millions of compounds known.
- They are usually represented by chemical formulae.
As we can see, compounds are indeed made up of more than one types of atoms whereas an element is made up of just one single atom.
Answer:
P₁ = 2.82 atm
Explanation:
Given data:
Initial volume = 28 L
Initial pressure = ?
Initial temperature = 65 °C (65 +273.15 = 338.15 K)
Final temperature = 35 °C (35 +273.15 = 308.15 K)
Final volume = 36 L
Final pressure = 2.0 atm
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
Solution:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = P₂V₂T₁/T₂ V₁
P₁ = 2.0 atm × 36 L × 338.15 K / 308.15 K × 28 L
P₁ = 24346.8 atm .L. K / 8628.2 K.L
P₁ = 2.82 atm
I believe the answer would be 14.25 an hour because $85.50/ 6 would be 14.25 but i could be wrong.
The first shell can hold up to two electrons maximum.
From the periodic table, we can find that hydrogen has only one electron occupying the first shell. Therefore, hydrogen would require an additional one electron to fill up the first shell.