Answer:
184620169 g.
We can say that this mass corresponds to 184.6 ton
Explanation:
This is the reaction: 2Mg (s) + O₂(g) → 2MgO (s)
We have the data of O₂, so let's find out the moles with the Ideal Gases Law.
First of all, we convert pressure to atm
760 Torr / 3.4×10⁻⁶ Torr = 223529.4 atm
P .V = n . R . T
223529.4 atm . 0.432L = n . 0.082 L.atm/mol.K . 301K
(223529.4 atm . 0.432L) / (0.082 L.atm/mol.K . 301K) = 3798769 moles
Gosh!, These are a lot of moles.
Ratio is 1:2. So with 3798769 moles we would need the double of moles of Mg. → 3798769 mol .2 = 7597538 moles
Let's convert this moles into mass ( mol . molar mass)
7597538 mol . 24.3 g/mol = 184620169 g
We can convert this mass to ton
1 ton = 1×10⁶ g
184620169 g / 1×10⁶ g = 184.6 ton
D - DNA provide the instruction and the ribosomes carry out the instruction .
The Copernican revolution is about the model of the solar system and was given by a polish astronomer. Option C. The discovery that the universe was expanding.
The Copernican Revolution become the paradigm shift from the Ptolemaic model of the heavens, which described the cosmos as having Earth stationery on the center of the universe, to the heliocentric version with the solar on the center of the solar system.
Copernican Revolution, shift the subject of astronomy from a geocentric understanding of the universe, focused around Earth, to heliocentric knowledge, concentrated across the sun, as articulated by the Polish astronomer Nicolaus Copernicus.
This revolution changed the way of thinking of the solar system. Earlier it was thought that earth is in the center of the solar sysytem,i.e; people believed in the geocentric model, but according to Copernicus the solar system has the sun at the center and the remaining planets revolve around it i.e he believed in a heliocentric model.
Learn more about the Copernican revolution here:-brainly.com/question/11385060
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Fe is the symbol of the metal iron. This is because the Latin name of iron is Ferrum. Iron shows more than one valency and forms Fe2+ and Fe3+ ions. Fe2+ ion is formed when an atom of iron loses 2 electrons to form a cation and Fe3+ ion is formed when an atom of iron loses 3 electrons to form a cation. For this reason, Fe2+ is known as the ferrous ion.
Therefore, the correct name for the ion Fe2+ is ferrous ion.
Moles Li = 3.50 g / 6.941 g/mol= 0.504
the ratio between Li and N2 is 6 : 1
moles N2 required = 0.504 /6=0.0840
we have 3.50 g / 28.0134 g/mol=0.125 moles of N2 so N2 is in excess
the ratio between Li and Li3N is 6 : 2
moles Li3N = 0.504 x 2 /6=0.168
mass Li3N = 0.168 mol x 34.8297 g/mol=5.85 g
