612C
Explanation:
The correct answer is carbon-12: this is a nuclear fusion reaction.
In nuclear reactions, the mass number and the atomic numbers are usually conserved:
⁹₄Be + ⁴₂H ₙᵃX + ₀¹n
conserving atomic number:
4 + 2 = n + 0
n = 6
conserving mass number :
9+4 = a + 1
a = 12
therefore X = ¹²₆C
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Answer:
189.5
Explanation:
its very very very very easy
Answer:
Because Scientists Uses hypothesis and try tests and try proving their points while regular normal people use it to just state a statement
Answer:
I think the first option is the answer
Answer:
Six C atoms (C₆); five H atoms (H₅); one N atom (N); no O atoms
Explanation:
The rule of 13 states that the formula of a compound is a multiple n of 13 (the molar mass of CH) plus a remainder r.
MF = CₙHₙ₊ᵣ
Y has a molecular mass of 91 u
91/13 =7r0
The formula can't be C₇H₇ because a hydrocarbon must have an even number of H atoms,
The odd mass and the odd number of H atoms make it reasonable to add an N atom and subtract CH₂ (CH₂ = 14):
C₇H₇ + N - CH₂ = C₆H₅N
Check:
6C = 6 × 12.000 = 72.000 u
5H = 5 × 1.008 = 5.040
1N = 1 × 14.003 = <u>14.003 </u>
TOTAL = 91.043 u
This is excellent agreement with the observed mass of 91.0425 u.
There are six C atoms (C₆)
There are five H atoms (H₅)
There is one N atom (N)
There are no O atoms.
