D. plenty of water
First, the affected area is washed with plenty of water for 15-20 minutes. Then washed with a weak solution of sodium bicarbonate.
H⁺ + HCO₃⁻ → H₂O + CO₂
Answer:
the D
Explanation:
The metal ice-cube tray has a higher conductivity
1. <span>The phase change in which a substance changes from a liquid to a gas is condensation. The correct option among all the options given is option "c".
2. </span>The phase change in which a substance changes from a solid to a liquid is melting. The correct option among all the options given is option "b".
3. The phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first is sublimation. The correct option is option "a".
Answer:
Explanation:
The biocapacity or biological capacity of an ecosystem is an estimate of its production of certain biological materials such as natural resources, and its absorption and filtering of other materials such as carbon dioxide from the atmosphere.
1 mole Ni ------------- 6.02x10²³ atoms
?? moles Ni ----------- 5x10²⁵ atoms
1 x ( 5x10²⁵ ) / 6.02x10²³ =
=> 83.05 moles
