Answer:
Sulfur dioxide
Explanation:
Sulfur dioxide (SO₂) is a colorless gas, which comes from burning fossil fuels like burning coal, oil and diesel from vehicles. This gas is also released into the environment through volcanic eruptions.
Sulfur dioxide is considered one of the worst air pollutants, mainly because it accumulates in droplets in the air and also because it reacts with other compounds in the atmosphere, forming particulate materials.
This gas is a major contributor to the warming of the planet. Its presence in acid rain (which makes it return from the atmosphere to the earth) is dangerous for plants and animals, in addition to corroding some materials and affecting monuments, buildings, statues.
Acid rain generated by SO₂ and other compounds can lower the pH of lakes and reduce fish populations. In plants, vegetables and flowers, it compromises production and growth.
In humans, sulfur dioxide can cause acute and chronic health effects, especially on the respiratory system, in addition to aggravating cardiovascular problems due to the simultaneous presence of SO₂ and particles in the atmosphere.
Volume= 0.52 L
P₁V₁=P₂V₂
P₁= 1.00 atm
V₁= 1.56 L
P₂= 3.00 atm
V₂= x
(1.00)(1.56)= 3x
From the equestion:
M=conc÷molarmass
where:conc=mass÷volume (15.00g÷(750.0mL×0.001L) ) =(0.75L)
now:15.00g÷0.75dm cube =20g/DM
Then:M=conc÷molarmass=20g/dm÷40g/mol=0.5M
Therefore the Molarity of naoh is 0.5M
Answer: Option (a) is the correct answer.
Explanation:
Sodium has atomic number 11 ans its electronic configuration is 
.
Sodium has one extra electron. Therefore , in order to gain stability sodium readily loses an electron to an electronegative atom. Hence, it becomes stable.
Thus, we can conclude that out of the given options, Na is the most reactive metal.
