For a given reaction the half-life, t1/2, of a reactant is the time required for its concentration to reach a value that is the arithmetic mean of its initial and final (equilibrium) value.
Half-life is constant for first-order reactions.
t1⁄2 =
ln 2
k
Half-life is not constant for second-order reactions but rather it varies with initial concentration and k.
t1⁄2 =
1
k·[A]o
half-life → vrijeme poluraspada
For a simple radioactive decay process, half-life, t1/2, is defined as the time required for the activity of a given radioactive isotopes to decrease to half its value by that process.
N = N0 / 2
The half-life is a characteristic property of each radioactive isotope and is independent of its amount or condition.
limiting reactant → mjerodavni reaktant
Limiting reactant is a reactant in a chemical reaction that limits the amount of product that can be formed. The reaction will stop when the entire limiting reagent is consumed. These other reactants are present in excess.
reactant → reaktant
Reactants are initial materials in a chemical reaction.
half-cell → polučlanak
Half-cell is a part of galvanic cell in which oxidations or reduction of an element in contact with water or water solution one of its compounds.
half-wave potential → poluvalni potencijal
Half-wave potential (E1/2) is a potential at which polarographic wave current is equal to one half of diffusion current (id). In a given supporting electrolyte, the half-wave potential is unique for each element and its different valence states and chemical forms. Observation of a current peak at a specific half-wave potential therefore identifies the chemical species producing the current.
Answer:
27.2atm
Explanation:
Data obtained from the question include:
V1 (initial volume) = 27.2mL
P1 (initial Pressure) = 1atm
V2 (final volume) = 1mL
P2 (final pressure) =?
Since the temperature is constant, the gas is obeying Boyle's law.
Mathematically, Boyle's law is expressed as:
P1V1 = P2V2
1 x 27.2 = P2 x 1
P2 = 27.2atm
The final pressure is 27.2atm.
Therefore, the pressure needed to compress the gas is 27.2atm
This statement is True! Lets think about it... When water boils, the water doesnt evaporate from the bottom of the bowl it evaporates from the top!
=)
<span>The neutral atom chlorine
has an atomic number of 17 therefore it also contains a total of 17 electrons. We
can write its ground state electronic configuration as 1s<span>2 </span>2s<span>2 </span>2p<span>6 </span>3s<span>2 </span>3p5</span>
Additional
info we can get here is that since the last one is <span>3p5 therefore its valence electron is 5.</span>