Answer:
Approximately 3318 disintegrations per minute.
Explanation:
The activity
of a radioactive decay at time
can be found with the following equation:
.
In this equation,
is the natural base.
.
is the initial activity of the decay. For this question,
.- The decay constant
of this sample needs to be found.
The decay constant here can be found using the activity after 10 days. As long as both times are in the same unit (days in this case,) conversion will not be necessary.
.
.

Apply the natural logarithm to both sides of this equation.
.
.
.
Note that the unit of the decay constant
is
(the reciprocal of days.) The exponent
should be dimensionless. In other words, the unit of
should also be days. This observation confirms that there's no need for unit conversion as long as the two times are in the same unit.
Apply the equation for decay activity at time
to find the decay activity after 47.2 days.
.
By dimensional analysis, the unit of activity here should also be disintegrations per minute. The activity after 47.2 days will be approximately 3318 disintegrations per minute.
Answer:
covalent bond
Explanation:
ionic bond is when electrons are transferred by atoms not shared
Carbon dioxide is the other product created.
Answer:
The resulting pressure is 2.81 atm
Explanation:
According to Dalton's Law of Partial Pressure, each of the gases (A and B) will exert their pressure independently. If we use Boyle's Law to calculate the pressure of each of the gases separately we have:
Pressure of gas A:
p1V1 = p2V2
p1 = 2.4 atm
V1 = 722 mL
V2 = 722 + 169 = 891 mL
p2 =?
Clearing p2:
p2 = (p1V1)/V2 = (2.4*722)/891 = 1.94 atm
Pressure of gas B:
p1 = 4.6 atm
V1 = 169 mL
V2 = 169+722 = 891 mL
p2=?
Clearing p:
p2 = (4.6*169)/891 = 0.87 atm
Dalton's expression for total partial pressures is equal to:
ptotal = pA + pB = 1.94+0.87 = 2.81 atm
Conjugated dienes routinely undergo 1,2 and 1,4 addition reactions with a variety of electrophilic reagents; this suggests that electrophilic reagents are likely intermediates during these reactions.
Two double bonds and one single bond divide a conjugated diene into two halves. Nonconjugated (Isolated) Dienes have more than one single bond separating two double bonds. Two double bonds are joined to the same atom to form cumulated dienes.
Reagents that function by acquiring electrons or sharing electrons that once belonged to a foreign molecule are referred to as electrophilic reagents, or electrophiles, in some cases. Electrophiles are molecules with a positive charge and a lack of electrons that can react by exchanging electron pairs with nucleophiles, which have many electrons. Epoxides, hydroxy amines, nitroso and azoxy derivatives, nitrenium ions, and elemental sulfur are significant electrophiles.
To know more about Electrophiles refer to: brainly.com/question/21773561
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