Nucleic Acids are polymers made of nucleotideds
Large intestines hgtgfjcob turn o bff 15th t ? vc
Two objects are dropped from a height of 100 m.
If one object is heavier than the
other object, which of the following is true?
(Note: ignore air resistance)
(a) The heavier object will experience equal force
and accelerate more slowly.
(b) The heavier object will experience more force
and accelerate more quickly
(c) The heavier object will experience equal force
and accelerate at the same rate
(d) The heavier object will experience more force
and accelerate at the same rate
I don’t have a periodic table nearby but I believe the answer is C, iron.
<em>Answer :</em> the density of the N₂O at 325 K and 113.0 kPa is 1.84 kg m⁻³.
<span>
<span><em>Explanation : </em>
Density (kg/m³) = mass (kg) / Volume (m³)
</span><span> <span>d = m/V
(1)
Ideal gas law,
PV = nRT (2)</span></span></span>
<span>Where, P is
the pressure of the gas (Pa), V is the volume of the gas
(m³), n is the number of moles of gas (mol), R is
the universal gas constant ( 8.314 J mol</span>⁻¹ K⁻<span>¹) and T is temperature in
Kelvin.
n = m/M (3)
Where, n is number of moles, m is mass and M is
molar mass.
From (2) and (3),
PV = (m/M) RT
By rearranging,
P = (m/VM)RT (4)
From (1) and (4)
P = (dRT) / M
The given data,
P = 113.0 kPa = 113.0 x 10</span>³ Pa<span>
d = ?
R = 8.314 J mol</span>⁻¹ K⁻<span>¹
T = 325 K
M = </span>44.0 g/mol = 44.0 x 10⁻³ kg/mol
<span>
By substitution,</span>
113.0 x 10³ Pa = (d x 8.314
J mol⁻¹ K⁻¹ x 325 K) / 44.0 x 10⁻³ kg/mol
d = (113.0 x 10³ Pa x 44.0 x 10⁻³ kg/mol) / (8.314 J mol⁻¹ K⁻¹ x 325 K<span>)
d = 1.84 kg m</span>⁻<span>³
Hence, the density of the N</span>₂O at 325 K and 113.0 kPa is 1.84 kg m⁻³.
<span>
Assumption made is "N</span>₂O gas has an ideal gas behavior".
