Carbon dioxide is a compound. Oxygen is an element. A compound is 2 or more elements chemically combined. An element is a pure substance. A mixture is combining two or more different compounds/elements.
False.
Its newtons <u>law</u> of gravity. We already know that it works and has been proven.
A <u>theory</u> is an idea, or something that someone believes to be true, but might not be
Answer:-
241.66 mL
Explanation:-
Volume of HCl = 145 mL / 1000 = 0.145 L
Strength of HCl = 0.25 M
Number of moles of HCl = Strength x volume
= 0.25 M x 0.145 L
= 0.03625 moles
According to the balanced chemical equation
NaOH(aq) + HCl(aq) → H 2 O(l) + NaCl(aq)
1 mol of HCl reacts with 1 mol of NaOH.
∴0.03625 moles of HCl reacts with 0.03625 moles of NaOH.
Strength of NaOH = 0.15 M
Volume of NaOH = Number of moles / strength
= 0.03625 moles / 0.15 M
= 0.24166 L x 1000
= 241.66 mL