Answer:
When factories mass produce something it produces smoke. That smoke can be harmful to something called the ozone layer. The ozone layer is part of earth's atmosphere that protects us from the suns burning heat. When that layer is damaged the sun's heat burns through heating up the world and melting ice causing the water levels to rise. All of this can make working conditions less safe, cause more flooding, and have the sun cause cancer.
Many atoms if they are radioactive isotopes will loss protons and neutrons as radiation in order to gain and become more stable
hope that helps
<u>Answer:</u> The mass of magnesium carbonate that will be dissolved in the reaction is 6.99 g.
<u>Explanation:</u>
We are given:
Amount of heat released = 1950 J = 1.950 kJ (Conversion factor: 1 kJ = 1000 J)
The chemical equation for the reaction of magnesium carbonate and hydrochloric acid follows:
By Stoichiometry of the reaction:
If 23.4 kJ of heat is released, then 1 mole of magnesium carbonate is dissolved
So, when 1.950 kJ of heat is released, then = 
of magnesium carbonate is dissolved
To calculate the mass of the substance by given number of moles, we use the equation:
Moles of magnesium carbonate = 0.083 moles
Molar mass of magnesium carbonate = 84.3 g/mol
Putting values in above equation, we get:
Hence, the mass of magnesium carbonate that will be dissolved in the reaction is 6.99 g.
As I am reading the problem,i can tell the question gives you two temperatures, two pressures, one volume and asking for the other. this should be an indication that you need to use the following gas formula
P1V1/T1= P2V2/T2
P1= 2.0 atm
V2= 4.0 L
T1= 27= 300 K
P2= 8.0 atm
V2= ?
T2= 327= 600 k
let's plug in the values into the formula
(2.0 x 4.0)/ 300= (8.0 x V2)/ 600 K
V2= 2.0 Liters
answer is D
