<span> The atomic number increases by one and the element becomes a different element. </span>
We can calculate how long the decay by using the half-life equation. It is expressed as:
A = Ao e^-kt
<span>where A is the amount left at t years, Ao is the initial concentration, and k is a constant.
</span><span>From the half-life data, we can calculate for k.
</span>
1/2(Ao) = Ao e^-k(30)
<span>k = 0.023
</span>
0.04Ao = Ao e^0.023(t)
<span>t = 140 sec</span>
57.1g * 6.022*10^23 / 22.9 * 2 = 7.51*10^23 molecules
<span>570 torr.
The ideal gas law is
PV = nRT
where
P = pressure
V = volume
n = number of moles of gas particles
R = Ideal gas constant
T = absolute temperature
Since the value n, R, and T remain constant for this problem, that indicates that if the volume is doubled, the pressure will be halved. So the new pressure will be 1.50 atm / 2 = 0.750 atm. Now we just need to convert that from atm to torr. 1 atm is equal to 760 torr, so 0.750 atm * 760 torr/atm = 570 torr.</span>
Explanation:
Transcribed image text: H26.25 - Level 2 Homework. Unanswered Match reagents as starting materials for the synthesis of ethyl 3-phenyl-3-oxopropanate. You can draw out the structures on your own to help you answer this question. Premise Response Drag and drop to match 1 Methyl benzoate = A Acetophenone 2 Diethyl carbonate = B Ethyl acetate
