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e2x + 2ex = 8. First, let's define z to be ex Substituting gives us the following quadratic equation:
z2+2z=8 or z2+2z-8=0
Solving for z gives us two possible zs: 2 and minus 4.
As z is a power of e, only z=2 makes sense.
Back solving we get:
ex = 2
and the answer is x=ln(2). If you substitute in the answer, you get e2ln2+2eln2=8, or 4+4=8. ln(2) ~= 0.69315.
What else can I help you with?
If zinc and iron are used to make a cell what half-reactions will occur for zn2 plus aq plus 2e- zn s e0 equals -0.76 v and for fe3 plus aq plus e- fe2 plus aq e0 equals 0.77 v?
Zn(s) → Zn2+(aq) + 2e- and Fe3+(aq) + e- → Fe2+(aq)
What is 2e plus 8 equals 2a-12?
It is one linear equation in two unknown variables: e and a.
7f - 2e - 3f plus 4e?
It can be simplified to: 4f+2e
How do you solve 3 ln x - ln 2 equals 4?
3lnx - ln2=4 lnx^3 - ln2=4 ln(x^3/2)=4 (x^3)/2=e^4 x^3=2e^4 x=[2e^4]^(1/3)
2e-7f-3e-f plus 6e plus 6f?
Simplified is 5e-2f.
How do you solve 2e minus 12 equals 7e plus 8?
2e - 12 = 7e + 8Add 12 to both sides: 2e = 7e + 20 subtract 7e from both sides: -5e = 20 divide both sides by -5: e = -4
What is the standard reduction potential for the half reaction Zn2 plus plus 2e- equals Zn?
Zn2+ + 2e- <--> Zno -0.7618 V
What is the oxidation half reaction for 2mg plus o2 equals 2mgo?
Mg equals Mg2+ plus 2e-
How do you solve 2e - 12 equals 7e plus 8?
2e - 12 = 7e + 8 Subtract 2e from both sides: - 12 = 5e + 8 Subtract 8 from both sides: -20 = 5e Divide both sides by 5: -4 = e That is, e = -4
Solve ex equals 2e1-2x?
meant to be e^x = 2e^1-2x
If y equals -4E-11x3 plus 2E-07x2 plus 9E-05x plus 0.062 what is x?
9E-05x
If a2 plus b2 equals c2 and e equals mc2 then by combining the two you get e equals m times the quantity a2 plus b2 right?
E=mc^2A^2+B^2=C^2E/m=C^2=A^2+B^2E/m=A^2+B^2E=m(A^2+B^2)correct
If zinc and iron are used to make a cell what half-reactions will occur for zn2 plus aq plus 2e- zn s e0 equals -0.76 v and for fe3 plus aq plus e- fe2 plus aq e0 equals 0.77 v?
Zn(s) → Zn2+(aq) + 2e- and Fe3+(aq) + e- → Fe2+(aq)
What is 2e plus 8 equals 2a-12?
It is one linear equation in two unknown variables: e and a.
7f - 2e - 3f plus 4e?
It can be simplified to: 4f+2e
What is the reduction half reaction for Mg s ZnCl2 aq MgCl2 aq Zn s?
-2.37 V (apex) Chace
What is the oxidation half-reaction for 2Mg O2 2MgO?
Mg equals Mg2+ plus 2e-
