What pH scale number represents a neutral.
The answer is 7
Answer: 8.12 g NaCl
Explanation: Use Avogadro's number to find the number of m
moles of NaCl:
8.24x10²² molecules NaCl / 1 mole NaCl/ 6.022x10²³ molecules NaCl
= 0.14 mole NaCl
Next convert moles to grams NaCl using its molar mass;
0.14 mole NaCl x 58g NaCl / 1 mole NaCl
= 8.12 g NaCl
When vinegar was added to baking soda, A new product is formed as foam. Hence, it is s a chemical change.
<h3>What is chemical change ?</h3>
A chemical change results from a chemical reaction forming new products while a physical change is when matter changes forms but not chemical identity.
Foam up with carbon dioxide gas,all of baking soda can be made react and disappear into vinegar solution and thus chemical reaction completes.
Hence, When vinegar was added to baking soda, A new product was formed Hence, it is s a chemical change.
Learn more about chemical change here ;
brainly.com/question/23693316
#SPJ1
Repeated patterns in the elements.
Hopefully this helps