C.) The pressure of the air above the substance. Hope this helps you!
To solve number 18 you have to add the positive and negative to equal zero. For example for 18a it would be K2S ( the 2 is a subscript ) because you need 2 positives to cancel out the 2 negatives.
Answer:
they lose their water
Explanation:
When exposed to air washing soda crystals lose their water of crystallisation and become amorphous. ∴ The phenomenon is called efflorescence.
It is false, the atomic number is the number of protons and/or electrons in an atom on an element.
Answer:
pH solutions cause the water to become more basic or more acidic therefore would force the organisms to adapt to their new situations