Answer:
A) (3.2g)
Explanation:
Did you reposed this? Because I remember answering this
When you wake up early, and go brush your teeth the toothpaste is made of chemical compounds, the water that you use to wash your faceis treated chemically. To make the coffee sugar or sweetener has chemical compounds.
<em>Advantages</em>
Chemistry helps you to understand the world around you.
Basic knowledge of chemistry helps you to read and understand product labels.
Chemistry can help you make informed decisions.
Chemistry is at the heart of cooking.
A command of chemistry can help keep you safe!
<em>Disadvantages</em><em> </em>
It isn't a sustainable form of energy.
It can be expensive.
Some forms of chemical energy are quite rare.
It can produce harmful waste.
It can be used to create devastating weapons.
It offers short-term benefits for long-term consequences.
Answers:
a) 10155 J
b) 16.6 J
Explanation:
According to the First Law of Thermodynamics we have:
Where:
is the total change in the internal energy of a system
is the heat exchanged between the system and its surroundings
is the work done on the system
a) In this case 
and 
, hence:
b) In this case 
and 
, hence:
