1 mol Cu - 2 mol Ag
x - 0.854 mol Ag
x=0.854*1/2=0.427
0.427 mol Cu
Answer:
What do cuticles do for land plants that was not necessary for ancestors that lived in water? Cuticles help prevent water loss. ... The next groups of land plants to evolve were ferns, which could grow bigger and taller because they could transport water and food.
Explanation:
<em><u>Given:</u></em>
Weight of Li2CO3 = 154 g
<em><u>To find:</u></em>
number of moles of Lithium Carbonate Li2CO3 = ?
<em><u>Solution:</u></em>
first we have to calculate the molar mass of Lithium Carbonate,
The elemental composition of Li2CO3
Li = 2 units, Atomic weight of each Li atom is 7 g/mol
Li = 2 × 7 = 14 g/mol
C = 1 unit, Atomic weight of Carbon is 12 g/mol
O = 3 units, Atomic weight of each O atom is 16 g/mol
O = 3 × 16 = 48 g/mol
Atomic weight of Li2CO3 = 14+12+48 = 72 g/mol
now,

Number of moles = 154/72 = 2.14 moles
<u>Answer- The number of moles of Lithium Carbonate is 2.14 </u>
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