The General Equation of Alkane is as follow,
CnH₂n₊₂ ------- (1)
As m/z = 380
So,
CnH₂n₊₂ = 380
Or,
12n+ 1₂n₊₂ = 380
12n+ ₂n ₊ ₂ = 380
14n ₊ ₂ = 380
14n = 380 - 2
14n = 378
n = 378 / 14
n = 27
Now, putting value of n in eq. 1
C₂₇H₍₂₇ₓ₂₎₊₂
C₂₇H₅₆
Result:
C = 27
H = 56
Moles = 15.5 g / 40 g/mol = 0.3875 mol
M = 0.3875 mol / 0.250 L = 1.55M
The answer is B because isotopes have the same number of protons and neutrons.
Answer:
The answer is: 22, 4 liters
Explanation:
We use the formula PV=nRT
At STP: 1 atm of pressure and 273 K of temperature.
PV=nRT
V=nRT/P =1 mol x 0,082 l atm/L mol x 273 K /1 atm
V=22, 386 l
Answer: False
Explanation: As additional scientific evidence is gathered, a scientific theory may be modified and ultimately rejected if it cannot be made to fit the new findings; in such circumstances, a more accurate theory is then required.
Hoped this helped!!!