13 half-lives have passed
<h3>Further explanation
</h3>
General formulas used in decay:
T = duration of decay
t 1/2 = half-life
N₀ = the number of initial radioactive atoms
Nt = the number of radioactive atoms left after decaying during T time
t1/2 = 4 days
Nt=18 mg (0.01% of the original isotope)
18 mg (Nt) = 0.01% No
No = the original isotope :
The duration of decay (T) :
Half-lives passed :
Answer:
Liquid B because of its higher vapor pressure due to the fact that evaporation rate is directly proportional to vapor pressure
Explanation:
The vapor pressure of liquid at equilibrium is a function to the liquid's rate of evaporation. The evaporation rate and hence the vapor pressure is a measure of the propensity of the particles of the liquid to leave the surface of the liquid and exist as vapor directly above the liquid. As high evaporation rate leads to high vapor pressure, a liquid with a higher vapor pressure will evaporate faster than one with a lower vapor pressure at the same temperature and pressure.
Therefore, liquid B with a vapor pressure of 18.04 kPa at 40° C will evaporate faster than liquid A with a lower vapor pressure of 7.37 kPa at the same 40°C.
The information given shows that the intermolecular force in C will be higher than the intermolecular force in D.
<h3>What is a intermolecular force?</h3>
It should be noted that an intermolecular force simply means the attractive or repulsive force which arise between the molecules of a substance.
In this case, the intermolecular force in D will be higher than the intermolecular force in C.
This is attributed to the fact that the dominant intermolecular force in C is hydrogen bonding while in D, it's dipole - dipole bonding.
It should be noted that hydrogen bonding is the highest intermolecular force in gases and liquids.
In D, due to the dipole-dipole force, the ions that has same charge will repel each other.
Learn more about intermolecular force on:
brainly.com/question/13979601
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IT ACID OR BASE THATS WHAT WOULD PUT SEE YA
Magnesium is in Group 2 (sometimes called Group II or 2A). Since it is in Group 2 it will have 2 valence electrons. When you draw the Lewis structure for Magnesium you'll put two "dots" or valance electrons around the element symbol (Mg).