Plagiarism is when you just copy exactly what someone else says, without their permission, or without citing where you got it from.
Common knowledge should be your own words. unless you take it from somewhere else, it doesnt need anything.
4 moles
64 grams of oxygen contains 4 moles
Answer: 1.85 atm
Explanation:
Initial pressure P1 = 1.70 atm
Initial temperature T1 = 300.0°C
Convert temperature in Celsius to Kelvin i.e (273 + 300.0°C) = 573K
Final pressure P2 = ?
Final temperature T2 = 350.0°C
(273 + 350.0°C) = 623K
Mathematically, pressure law states the pressure (p) of a gas is directly proportional to the absolute temperature (T).
i.e Pressure ∝ Temperature.
P1/T1 = P2/T2
1.70 atm/573K = P2/623K
P2 = (1.70 ATM x 623K) / 573K
P2 = 1059.1/573
P2 = 1.85 atm
Thus, the 1.85 atm of pressure is required.
Answer:
substance A is a liquid, while substance B is a liquid or gas
There are 1.66 
1
molecules in 1 gram of nicotine.
<u>Explanation</u>:
Nicotine is an organic compound with the chemical formula of 
Given the mass of nicotine = 4.50 g
Molecular mass of Nicotine = 162.23 g/mol
Moles of a compound = given mass / molar mass of the compound
= 
The Number of molecules of compound:
Moles Avogadro number = 0.0277 6.023 1
= 1.66 1 molecules.
There are 1.66 1 molecules in 1 gram of nicotine.
