Answer:
Mass = 2.222 g
Explanation:
Given data:
Volume of neon gas = 2.56 L
Temperature = 273 K
Pressure = 1 atm
Mass of neon gas = ?
Solution:
PV = nRT
n = PV / RT
n = 1 atm × 2.56 L/ 0.0821 atm. L / mol. K× 273 K
n = 2.56 L.atm / 22.4 atm. L/ mol
n = 0.11 mol
Mass = number of moles × molar mass
Mass = 0.11 mol × 20.2 g/mol
Mass = 2.222 g
Answer:
Magnification is the number of times larger an image is compared with the real size of the object.
Magnification = Image / Actual = 5/0.4 =12.5
Explanation:
Answer:
atomos
Explanation:
2,500 years ago, Democritus suggested that all matter in the universe was made up of tiny, indivisible, solid objects he called "atomos." However, other Greek philosophers disliked Democritus' "atomos" theory because they felt it was illogical.
