Sand is less dense than gravel and will therefore sink to the bottom of the container while the gravel stays ontop.
Half life period for the reaction where deduction of mass takes places is 8 days.
<h3>What is
half life?</h3>
Half life period of any reaction is that time where half concentration of reactant get converted into product.
Here we can calculate the half life through the below equation:
where, m' = initial mass of iodine = 80g
m = remaining mass = 2.5g
t = taken time = 40 days
T = half life
By putting this all value in above equation, we get
Hence, half life period of this reaction is 8 days.
To learn more about half life time, do visit the given link:
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Answer:
the answer to your question is c
Answer:
V = 15 L
Explanation:
PV = nRT
P = 1.29 atm, T= 355 K mass argon 40g/mol
n = mass/ molecular mass; n = 26.6 g/40 g/mol; n = 0.665 mol
V = (0,665 mol x 0.082 x 355 K) / 1.29 atm = 15 L
Answer:
Before we get into the first law of thermodynamics we need to understand the relation between heat and work and the concept of internal energy. Just like mass, energy is always conserved i.e. it can neither be created nor destroyed but it can be transformed from one form to another. Internal energy is a thermodynamic property of the system that refers to the energy associated with the molecules of the system which includes kinetic energy and potential energy.
Whenever a system goes through any change due to interaction of heat, work and internal energy, it is followed by numerous energy transfer and conversions. However, during these transfers, there is no net change in the total energy.
Similarly, if we look at the first law of thermodynamics it affirms that heat is a form of energy. What it means is that the thermodynamic processes are governed by the principle of conservation of energy. The first law of thermodynamics is also sometimes referred to as the Law of Conservation of Energy
Explanation: