<span>1. soft
2. yellowish white
3. greasy
4. smooth</span>
Answer:
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP)
The atom that has atomic mass of 12 has ___6____________ protons. The valence electron(s) is/are<span> the outer most electron(s) in an atom. In an atom, the electrons form a cloud around the nucleus. Objects that </span>are<span> electrically neutral become negatively </span>charged<span> when they gain electrons.</span>
Answer:
false evaporation is change of state
boiling point is temperaturw of liquid
Answer: The volume of 0.640 grams of
gas at Standard Temperature and Pressure (STP) is 0.449 L.
Explanation:
Given: Mass of
gas = 0.640 g
Pressure = 1.0 atm
Temperature = 273 K
As number of moles is the mass of substance divided by its molar mass.
So, moles of
(molar mass = 32.0 g/mol) is as follows.

Now, ideal gas equation is used to calculate the volume as follows.
PV = nRT
where,
P = pressure
V = volume
n = no. of moles
R = gas constant = 0.0821 L atm/mol K
T = temperature
Substitute the values into above formula as follows.

Thus, we can conclude that the volume of 0.640 grams of
gas at Standard Temperature and Pressure (STP) is 0.449 L.