Answer:
Chemical formula for the black iron oxide sample is FeO
Explanation:
<u>Given:</u>
Mass ratio of black iron oxide sample, Fe/O = 3.491
<u>To determine:</u>
The chemical formula
<u>Calculation:</u>
The mass ratio is Fe:O = 3.491 : 1
Mass of Fe = 3.491 g
Mass of O = 1.000 g
Atomic mass of Fe =55.85 g/mol
Atomic mass of O = 16.00 g/mol
Therefore, the molar ratio of Fe:O = 1:1
Hence, chemical formula is FeO
0.25 g al should equal around 0.009265594867125 moles
I hope this help
Answer:
Myocardium
Explanation:
myo means "of muscle" or "relating to muscle"
cardium denotes tissues or cells that are associated with the heart.
The myocardium is an involuntary (we don't have to actively contract it), smooth muscle. The cells that make up the muscle are called cardiomyocytes.
These cells/tissues are hugely important for the normal functioning of the heart, and disruption is associated with diseases such as ischemic heart disease.