1. Physical matter
2. Chemical matter
3. Physical matter
4. Physical matter
5. Chemical matter
6. Physical matter.
Option D: 246 K
According to ideal gas law:
...... (1)
Here, P is pressure, V is volume, n is number of moles, R is Universal gas constant and T is temperature of the gas. The value of R is 
.
Number of moles of gas are 0.750 mol, volume of cylinder is 6850 mL and pressure of gas is 2.21 atm.
First converting volume from mL to L
Thus,
6850 mL=6.850 L
Putting the values in equation (1),
Rearranging
,
Therefore, temperature of the gas is 246 K.
Answer:
We smell hot food from distance because of the diffusion process. Diffusion is the spreading out and intermixing of particles From one substance into another substance due to the movement of particles.
Explanation:
For example, a method that has been used to regulate or control global warming is planting trees. The pros of planting trees is they serve as an absorber of carbon dioxide which helps the ozone layer get protected by the oxygen trees produce and they also regulate the temperature in the atmosphere although the cons are these trees can also catch fire eaaily due to the rising temperature in the atmosphere which can make them less effective in regulating the warming of the globe.
This is true! Heterozygous would be Dd, and the dominant masks the recessive
