States that the properties of elements are periodic or recurring and are correlated to their atomic number.
A chemical reaction that releases energy usually in the form of heat
Answer:
squeezing syringes contain gas
Answer:
it will have 6 valence electrons
it will gain electrons
charge will be 2-
Answer:

Explanation:
Hello.
In this case, since the neutralization of the acid requires equal number of moles of both acid and base:

Whereas we can express it in terms of concentrations and volumes:

Thus, we can compute the volume of sodium hydroxide (base) as follows:

Best regards.