Canceling out the constants and taking the natural log of both sides gives us this:
<span>Ea1/T1=Ea2/T2 </span>
<span>Ea1=75kJ </span>
<span>T1=298K </span>
<span>Ea2=49kJ </span>
<span>T2=? </span>
<span>So now, </span>
<span>T2= Ea*T1/Ea = 75*298/49 </span>
<span>Your answer should be 456.12 = 456K!
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We are given with the reaction HCOOH(g) →CO2(g) + H2 (g). According to Dalton's law, the total pressure of a vessel is equal to the sum of the partial pressure of the components inside it. In this case, we plot first the data ln (ratio partial pressure of HCOOH to total pressure) vs time. Partial pressure is the difference of pressure (from one point to another). In this case, the equation is ln P(HCCOH) = -0.0146t - 0.2281 where R² = 0.9923. K is equal to <span> -0.0146 s-1. When the total pressure is 291, ln P is -0.66938, thus the time is 30.23 seconds. The half life is ln(0.5)/k equal to 47.46 seconds.</span>
Dependent is a variable who's outcome depends on another variable. independent is a variable who's outcome doesn't depend on another variable only the researchers experimenting.
hope this helps !
Energy E = hc / l
where h = Planck's constant, c = speed of light and l = wavelength.
E = 1.986 * 10^-25 / 3.8 * 10^-7 = 5.223*10^-19
Missing question:
(a) 1s2 2s2 2p6 3s1
(b) 1s2 2s2 2p6 3s2
(c) 1s2 2s2 2p6 3s2 3p1
(d) 1s2 2s2 2p6 3s2 3p4
(e) 1s2 2s2 2p6 3s2 3p5
Answer is: a) 1s²2s²2p⁶3s¹ (sodium).
Sodium have the largest second ionization energy, because when he lost one electron(first ionization energy), he have stable electron configuration of noble gas neon (1s²2s²2p⁶), so sodium do not need to lost second electron, because he will have unstable electron configuration.
