Answer:
molecular formula = 
Explanation:
Given data
c = 92.25%
H = 7.75%
molar mass = 104 g/mol
to find out
the empirical and molecular formula for styrene
solution
we know that
styrene 1 g contain = 0.9225 g C and 0.0775 g H
so
C = 104 × 0.9225 g / 12 g/mol
C = 7.995 mol = approx 8 mol
and
H = 104 × 0.0775 g / 1 g/mol
H = 8.06 mol = approx 8 mol
so we say that 1 mole of styrene have 8 mole of C and H
so
molecular formula =
Answer: wavelength=velocity×period
Explanation:the relation between velocity, wavelength and period is
Wavelength=velocity×period
<span>fast-moving particles colliding with slow-moving particles</span>
Answer:
70560 m
Explanation:
The formula to calculate the distance travelled during a free fall motion is
where
d is the distance travelled
g = -9.8 m/s^2 is the acceleration due to gravity
t is the time
In this situation,
t = 120 s
Therefore the distance travelled after 120 s is
