Saturated fats have single bond between the carbon atoms, this makes them a solid at room temperature. Unsaturated fats have at least one double bond between the carbon atoms, which makes them liquid in room temperature.
Answer:
Density of copper = 8.9 g/cm³
The density of liquid mercury is 13.6 g/cm³ which means mercury is denser than copper so copper will float on liquid mercury.
Explanation:
Given data:
weight of copper metal = 1896 g
Dimensions of block = 8.4 cm, 5.5 cm, 4.6 cm
Density of copper = ?
Will it float to the liquid mercury = ?
Solution:
Density:
Density is equal to the mass of substance divided by its volume.
Units:
SI unit of density is Kg/m3.
Other units are given below,
g/cm3, g/mL , kg/L
Formula:
D=m/v
D= density
m=mass
V=volume
volume of coper metal = 8.4 cm × 5.5 cm × 4.6 cm
volume of coper metal =212.52 cm³
d = 1896 g/ 212.52 cm³
d = 8.9 g/cm³
The density of liquid mercury is 13.6 g/cm³ which means mercury is denser than copper so copper will float on liquid mercury.
Answer:
The average kinetic energy of a particle is proportional to its temperature in kelvins.
Explanation:
<u>Kinetic molecular theory postulates:-
</u>
-
The gas is composed of small molecules are they are in continuous random motion and having elastic collisions with one another and also with the walls of the container.
- The molecules of the gas does not exert any kind of repulsive or attractive forces on each other and they their size is negligible as compared to the difference between them.
- Pressure exerted by the molecules of the gas results from the collisions which is happening between the molecules of the gas and the walls of the container.
- Average kinetic energy of molecules of the gas is directly proportional to absolute temperature.
Out of the given postulates, the postulate which can be used to explain the increase in pressure of a gas with temperature is:- <u>The average kinetic energy of a particle is proportional to its temperature in kelvins.</u>
<u>This is because increase in the kinetic energy demonstrate that the molecules are moving faster which leads to greater pressure. </u>Thus, Pressure is directly proportional to the kinetic energy which in turn is directly proportional to temperature.
<u>So, Pressure is directly proportional to the temperature.</u>
Answer:
I would say the answer is D
Explanation:
The volume that 0.878 mol occupy at the same temperature and pressure is calculated as follows
if 0.274 mol occupy 6.62 L what about 0.878 mol
by cross multiplication
=0.878 x6.62/0.274=21.21 L