Answer:
The answer to your question is 0.32 moles of water are needed.
Explanation:
Data
mass of CaC₂ = 10 g
mass of water = ?
Process
1.- Write the balanced reaction
CaC₂ + 2H₂O ⇒ C₂H₂ + Ca(OH)₂
Reactant Element Product
1 Ca 1
2 C 2
4 H 4
2 O 2
The reaction is balanced
2.- Convert mass of CaC₂ to moles
molecular mass CaC₂ = 40 + (2 x 12)
= 40 + 24
= 64 g
64 g of CaC₂ ----------------- 1 mol
10 g ----------------- x
x = (10 x 1) / 64
x = 10/64
x = 0.16 moles of CaC₂
3.- Calculate the moles of water
1 mol of CaC₂ ----------------- 2 moles of water
0.16 moles of CaC₂ --------- x
x = (0.16 x 2) / 1
x = 0.32 moles of water
Answer:
2 8 5
Is phosphorus normal ground state configuration this configuration 2 7 5 is not possible for phosphorus or potassium
Explanation:
Answer:
Bohr thought that electrons orbited the nucleus in circular paths; whereas in the modern view atomic electron structure is more like 3D standing waves. Bohr built upon Rutherford's model of the atom. ... He believed that electrons moved around the nucleus in circular orbits with quantised potential and kinetic energies.
Explanation: