The rate of evaporation would decrease because of
the formation of bonds between the soap and the water.
So, no. Regular water evaporates faster than soapy water
Explanation:
H is hydrogen and Na is sodium.
Hydrogen is the first element of the periodic table. Its atomic no is 1. Its atomic weight is 1.008. Its electronic configuration is 1s¹.
Na is hydrogen. It lies at 3rd period and 1st group. Its atomic number is 11. Its atomic weight is 22.989769 u. Its electronic configuration is 2,8,1.
Answer:
Mass = 13.14 g
Explanation:
Given data:
Mass of zinc = 11.89 g
Mass of HCl needed = ?
Solution:
Chemical equation:
Zn + 2HCl → ZnCl₂ + H₂
Number of moles of Zn:
Number of moles = mass/molar mass
Number of moles = 11.89 g/ 65.38 g/mol
Number of moles = 0.18 mol
Now we will compare the moles of Zn and HCl.
Zn : HCl
1 : 2
0.18 : 2/1×0.18 = 0.36 mol
Mass of HCl:
Mass = number of moles × molar mass
Mass = 0.36 mol ×36.5 g/mol
Mass = 13.14 g
