Answer:The new volume will be
0.7 L
Explanation:
This is an example of Charles' law, sometimes called the temperature-volume law. It states that the volume of a gas is directly proportional to the Kelvin temperature, while pressure and amount are held constant.
The equation is
V
1
T
1
=
V
2
T
2
, where
V
is volume and
T
is temperature in Kelvins.
Known
V
1
=
0.5 L
T
1
=
20
∘
C
+
273.15
=
293 K
T
2
=
150
∘
C
+
273.15
=
423 K
Unknown
V
2
Solution
Rearrange the equation to isolate
V
2
. Substitute the known values into the equation and solve.
V
2
=
V
1
T
2
T
1
V
2
=
(
0.5
L
×
423
K
)
293
K
=
0.7 L
rounded to one significant figure
Answer:
0.5
L solution
⋅
required molarity
2.5 moles NaCl
1
L solution
=
1.25 moles NaCl
Now, to convert this to grams of sodium chloride, you must use the mass of
1
mole of this compound as a conversion factor. The mass of
1
mole of sodium chloride is given by its molar mass
1.25
moles NaCl
⋅
58.44 g
1
mole NaCl
=
73 g
−−−−
Explanation: if this is wrong i am very sorry
