The clean air act of 1990 was important because it helped reduce pollution and keep the enviornment safe. The act organized the idea's of 'safe' in regards to the ozone layer and also the air (generally). This meant that the amount of acid rainfall was controlled. It set rules and policies regarding polluting. Basically, people needed to wake up and think about the enviornment. Companies, people, and even communities were all now responsible for keeping what they breathe (air) clean.
Does this explain it pretty well? If not, please feel free to comment! Thanks for being part of Brainly. :)
When we look at the periodic table, it tells us the Sodium is labeled as 'Na'.
Density of gasoline is 0.737 g/mL and volume of tank is 13.0 gal.
Since, 1 US gal=3.78 L
Volume of tank in L will be:
Also, 1 L=1000 mL
Thus,
Mass of gasoline can be calculated as follows:
m=d×V
Here, d is density and V is volume thus,
Therefore, mass of gasoline will be 
.
Chemical equations have reactants to its left and products to its right. It is natural that number of atoms of each element in the reactants must be balanced with the number of atoms of those elements in the products also. This is called balancing of the chemical equation.
Hope this helps. Found it on the internet.
