1. (9) An impure 18.540g sample of a weak base of a metal hydroxide, M(OH)), is 62.08% M(OH), by mass. The sample is added to 625.0mL of 0.2800M sulfuric acid (H. SO.). The resulting solution is acidic is then neutralized
with 238.2mL of 0.1130M NaOH.
a) What is the mass of M(OH), in the original sample? (1 pt)
b) Assuming that the M(OH), is the only substance that reacts with the acid, determine the moles of M(OH),
present in the original sample (5 pts).
c) Determine the identity of the metal (3 pts).

b) Assuming that the M(OH), is the only substance that reacts with the acid, determine the moles of M(OH),

present in the original sample (5 pts).

Explanation:

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance