Answer:
the law of conservation mass states that the mass of an isolated system cannot be created nor destroyed by any chemical reaction or physical transformation.
thus, there must be an equal number of atoms of an element present on both sides of the equation.
Answer:
Explanation:
(a)The first liquid phase temperature required at 183°C
(b)By drawing a tie line and intersection with the liquidus line, the composition of the first liquid deduced is
61.8wt% of sand
38.2wt% of Pb
(c)By studying the diagram, phase diagram is on liquidus line, then
The complete melting point temperature of alloy is 260°C
(d)If a tie line is drawn it is deduced that thecomposition of the last solid remaining prior to complete melting is 13wt% of Sn
<span>n = c x v
= 1 x 0.025
= 0.025 moles
= n
NaOH = n/v
= 0.025/0.045
= 0.56M
So is it A
0.56 M NaOH</span>
Answer:
if im right i do my caculation that it is B
In this solution liquid is solvent and the solid is solute. solid will be solve in liquid in normally but the increasing of tempreature make this solutuion speed higher because of preasure.