Answer:
No bcz it is insulator it will not conduct electric
Answer:
[H₃O⁺] = 7.08×10⁻⁹ M
Explanation:
pH = - log [H₃O⁺]
[H₃O⁺] = 10^⁻pH
Therefore, [H₃O⁺] = 10⁻⁸¨¹⁵
[H₃O⁺] = 7.08×10⁻⁹ M
Answer:
C.
Explanation:
pH > 7, basic, so pH = 9 is basic.
When solution is basic, it will turn phenolphthalein pink.
Atomic mass Ca = 40.078 u.m.a
40.078 g --------------- 6.02x10²³ atoms
121 g ------------------- ??
121 x ( 6.02x10²³) / 40.078 =
7.28x10²⁵ / 40.078 = 1.81x10²⁴ atoms