Answer:
i am answering the same question 3rd time
please find the answer in the images attached.
Answer:The atoms in a solid .
remain in fixed position
The arrangement of atoms in a solid causes it to have a definite .
shape and value
Solids in which the atoms have no particular order or pattern are called solid
noncrystalline
Explanation:
Answer:
THE FIRST ONE YOU SHOULD TELL HIM AND THE LAST ONE YOU SHOUDENT DO BECAUSE HE WILL DO IT AGAIN AND EXPECT OTHERS TO CLEAN UP AFTER HIM
Explanation:
The neutral pH is 7. Less than 7 indicates an acid and more than 7 indicates a base (up to 14).
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NaCl - it's a salt (we can't measure the pH)
H2O - it can be an acid but also a base (the pH it is almost neutral,meaning close to 7 )
HF - it is a strong acid
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KOH
- it is a strong base (pH=14)
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↓
He needs to use HF (Hydrogen fluoride) to decrease the pH.
