I am from Nepal i don't know this language
Answer:
32,0 days.
Explanation:
The radioactive decay follows:
Where Nt is the concentration in a time t (6,22x10¹⁷), N₀ is the initial concentration (9,95x10¹⁸) Half life time is 8,0 days and t is the time it take to drop this concentration. Replacing:
It take <em>32,0 days</em>
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I hope it helps!
Answer:
474.92 mL.
Explanation:
- We can use the general law of ideal gas: <em>PV = nRT</em>.
where, P is the pressure of the gas in atm.
V is the volume of the gas in L.
n is the no. of moles of the gas in mol.
R is the general gas constant,
T is the temperature of the gas in K.
- If n is constant, and have two different values of (P, V and T):
<em>P₁V₁T₂ = P₂V₂T₁</em>
<em></em>
P₁ = 740 mmHg, V₁ = 450 mL, T₁ = 16°C + 273 = 286 K.
P₂ = 760 mmHg, V₂ = ??? mL, T₂ = 37°C + 273 K = 310 K.
<em>∴ V₂ = P₁V₁T₂/P₂T₁ </em>= (740 mmHg)(450 mL)(310 K)/(760 mmHg)(286 K) = <em>474.92 mL.</em>
This is a picture of an atom
