∆H (enthalpy change) should be positive because you would need energy to break the oxygen- oxygen bond to generate 2 molecules of Oxygen .
<h3>What is enthalpy change ?</h3>
It is type of energy or the measurement of energy . The quantity of enthalpy equals to the total content of heat of a system .
It can be defined as the sum of total internal energy and the product of volume and pressure .
It describes the system is endothermic or exothermic .
<h3>What is exothermic reaction? </h3>
It is a reaction in which energy is released from the system in the form of heat and light.
in this loss of energy occurs. energy liberated from system to surrounding. the enthalpy change i.e. ∆H<0.
<h3>
What is endothermic reaction? </h3>
It is a reaction in which energy is absorbed from the surrounding to the system. in this gain of energy occurs. the enthalpy change i.e ∆H>0.
Learn more about enthalpy change here:
brainly.com/question/14047927
#SPJ4
200,000 kilometers is the total distance traveled.
50,000 x 4 = 200,000
please mark brainliest.
Answer:
1.505535375e+23 or if it needs to be simple, 1.5.
Explanation:
Idk hope this helps.
Answer:
Electrochemistry,
Explanation:
Electrochemistry is a branch of chemistry concerned with the relation between electricity and chemical change. Many spontaneously occurring chemical reactions liberate electrical energy, and some of these reactions are used in batteries and fuel cells to produce electric power.
I Hope This Helps!!!!!
A balance in a lab measures the weight of a substance or object.
Weight is the mass of the body x the gravitation pull on the mass of the object.
So the mass of the object can be found by dividing the weight by gravitational constant.
The gravitational constant on earth is 1. so if a balance says that a substance weighs 300g then its mass is also 300g on earth because 300/1 = 300.
Hope that helps :)
