Elements with a plus one charge have the fewest valence electrons among all groups and elements in the periodic table. This includes lithium, soldium, potassium, rubidium, cesium and francium. The number of valence electrons increase from left to right. The highest number of valence electrons include the noble gases.
Answer:
V = 8.97×10⁴ L
Explanation:
Given data:
Mass of oxygen = 1.35×10⁵ g
Litters of oxygen = ?
Solution:
First of all we will calculate the number of moles.
Number of moles = mass/ molar mass
Number of moles = = 1.35×10⁵ g / 32 g/mol
Number of moles = 0.04 ×10⁵ mol
Litters of oxygen:
PV = nRT
V = nRT/P
V = 0.04 ×10⁵ mol × 0.0821 atm. L/ mol. K ×273 K / 1atm
V = 0.897×10⁵ atm.L / 1atm
V = 8.97×10⁴ L
Answer: 48800g
Explanation:
Using the mathematical relation : Moles = Mass / Molar Mass
Moles = 488
Molar mass of CaCO3 = 40 + 12 + (16 x 3) = 100g/mol
Therefore
488 = mass / 100 = 48800g