The density of water is a physical property.
You can measure it without changing the water to a different substance.
It is <em>not a physical change</em> because the water does not change to ice or steam.
You can observe a <em>chemical property</em> or a <em>chemical change</em> only if the water <em>changes to a different substance</em>.
The octet rule states that atoms tend to form compounds in ways that give them eight valence electrons and thus the electron configuration of a noble gas
Divide the mass of the compound in grams by the molar mass you just calculated. The answer is the number of moles of that mass of compound.
I hope it helps
Answer:
Empirical Formula:
The empirical formula of a compound is the simplest whole-number ratio of the numbers of the different atoms that compose the molecule of the compound. The empirical formula looks like a molecular formula.
C
2
H
2
and
C
H
are the molecular formula and the empirical formula of acetylene.
The Given Data
The mass of carbon in the compound:
m
C
=
40.6
g
The mass of hydrogen in the compound: {eq}m_H = 5.1 \ \rm...
Answer:
B
Explanation:
Add up all the numbers and the answer is 40
Then divide by how many numbers there are which 5
40/5=8
:)
