Answer:
2nd and last.
Explanation:
In the first equation,the number of hydrogen atoms is not balanced and in the third,the number of aluminum atoms is not balanced.
Answer:
Strong intermolecular forces: an increase in viscosity of the liquid, increase in surface tension, decrease in vapor pressure, and an increase in the boiling point.
Weak intermolecular forces: a decrease in viscosity, a decrease in surface tension, an increase in vapor pressure and an increase in boiling point.
Explanation:
Intermolecular forces are forces of attraction or repulsion between neighboring molecules in a substance. These intermolecular forces inclde dispersion forces, dipole-dipole interactions, hydrogen bonding, and ion-dipole forces.
The strength of the intermolecular forces in a liquid usually affects the various properties of the liquid such as viscosity, surface tension, vapour pressure and boiling point.
Strong intermolecular forces in a liquid results in the following; an increase in viscosity of the liquid, increase in surface tension, decrease in vapor pressure, and an increase in the boiling point of the liquid.
Weak intermolecular forces in a liquid results in the following; a decrease in viscosity, a decrease in surface tension, an increase in vapor pressure and an increase in boiling point of that liquid.
Answer: B. 0.6125 m
For spherical concave mirror:
Height of the object,
Height of the image,
Object distance, u=-0.7 m
we need to find the distance of the image, v.
These are related by the following formula:
Insert the values:
Hence, option B is the correct.
Answer:
When dry ice is exposed to warm air, a gas called carbon dioxide is produced through a process called sublimation
Explanation:
The term they use is group.