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• Question #d9b53
  
• How many moles of H2SO4 are need to produce 13 moles of H2O?
  
• Is there any shortcut methods for integration of logarthmic or exponential function ?
  
• Question #07091
  
• Lim x->0 √1-cos 2x/√2x=? Thanks
  
• How do you graph `theta=-840^circ`?
  
• When electricity is produced from coal, the chemical energy in coal is first changed to what type of energy?
  
• How to solve the equation `z^4=ibarz` ? Where z is a complex number.
  
• How do you simplify `\frac { gh ^ { - 9} \cdot g ^ { 0} h } {gh ^ { 0} }` with positive exponents?
  
• How would you express Tin (IV) oxide as a chemical formula?
  
• What is the balanced complete ionic equation for `NH_4Cl(aq) + NaOH(aq) -> H_2O + NH_3(g) + NaCl(aq)`?
  
• Which occupies more space: 5 g of solid gold or 5 g of liquid gold?
  
• What is a standard solution?
  
• Is it possible for the equivalence point of a titration to not be at pH 7?
  
• How do you integrate `int y/(e^(2y))` by integration by parts method?
  
• How do you use the Fundamental Theorem of Calculus to find the derivative of `int xsin(πx)` from 1 to x^2?
  
• How do you evaluate the limit `(sqrt(x+4)-2)/x` as x approaches `0`?
  
• How do you integrate `(ln x) ^ 2 / x ^ 2`?
  
• How do you evaluate: `lim_(x rarr 0) xsin(1/x)`?
  
• How do you find the derivative of `-2e^(xcos(x))`?
  
• Question #f26bd
  
• How do you convert 0.320 atm to mm Hg?
  
• What does it mean if a function is not differentiable at a point?
  
• Which halogen has the least attraction for electrons?
  
• What kind of salt (acidic or basic) is `Zn(CH_3COO)_2` solution?
  
• How are the formulas for acids determined?
  
• How do solutes affect the properties of solvents?
  
• How many protons are in the nucleus of aluminum?
  
• How do acid base indicators work?
  
• What are some common mistakes students make with the Nernst equation?
  
• Question #f0076
  
• What are some examples of quantitative and qualitative measurements?
  
• For the balanced equation `2C_2H_5OH + 6O_2 -> 4CO_2 + 6H_2O`, how many moles of `O_2` will react with 0.3020 moles of `CO_2`?
  
• How many moles of `CoO(s)` will be formed for every mole of `CoCl_2 * 6H_2O(s)`?
  
• What is the correct name for `MgF_2`?
  
• What is the name of `Ni_3(PO_4)_2`?
  
• In the reaction `2Li(s) + 2H_2O(l) -> 2LiOH(aq) + H_2(g)`, what compound is in the liquid state?
  
• How do you write a polynomial with zeros -2,-2,3,-4i?
  
• Question #04194
  
• Question #df832
  
• Question #15796
  
• What does cosx sinx equal?
  
• How do you find the inverse of `A=``((-3, 6), (2, -4))`?
  
• What are the all the solutions between 0 and 2π for `sin2x-1=0`?
  
• How do you solve `2 ln x = 1`?
  
• How do you solve `log(x-15)+logx=2`?
  
• How do you simplify `((-15(ab)^2)/(5a^2b))^5`?
  
• Question #34d98
  
• How do you implicitly differentiate `6=lny/(e^x-e^y)-e^x-e^y`?
  
• What is the empirical formula of a molecule containing 24% carbon, 6% hydrogen, and 70% chlorine?
  
• Question #6e2b5
  
• Question #94101
  
• What is the equation of the line tangent to `f(x)=x^(1/x)` at `x=1`?
  
• What is the advantage of a logarithmic model?
  
• How do you balance `C_3H_6 + O_2 -> CO + H_2O`?
  
• How do you integrate `int x^2e^x dx` using integration by parts?
  
• Given the equation:`N_2+3H_2 rarr 2NH_3`, what volume of `NH_3` at STP is produced if 25 grams of `N_2` is reacted with an excess of `H_2`?
  
• What is the difference between weak acids and strong acids?
  
• How do you solve the following system?: `-x -2y =-1, 6x -y = -4`
  
• Question #d5ff0
  
• How do you simplify `cos(x-y)-cos(x+y)` to trigonometric functions of x and y?
  
• What is the solubility of solids in water?
  
• How do you solve using gaussian elimination or gauss-jordan elimination, `-2x -3y = -7`, `5x - 16 = -6y`?
  
• How can you use trigonometric functions to simplify `16 e^( ( 23 pi)/12 i )` into a non-exponential complex number?
  
• What is an example of an oxidation reaction practice problem?
  
• How do you find all the real and complex roots of `x^7 + 128 = 0`?
  
• Question #ed5f9
  
• How do you solve `log_2 (x-1) = log_4 (x+1)`?
  
• When i add KMnO4 into an unsaturated carboxylic acid the color of KMnO4 changes to brown and when i added few drops of H2SO4 into this brown solution the brown color disapears. how this occur kindly help me????
  
• What are the removable and non-removable discontinuities, if any, of `f(x)=abs(x-9)/ (x-9)`?
  
• What is the derivative of `f(x)=sec^2xcosx`?
  
• How do you integrate `f(x)=x/((x-2)(x+4)(x-7))` using partial fractions?
  
• Show that `intx²( e^x -1 )dx = x²e^x -2xe^x +2e^x -(x^3)/3 + c`?
  
• How do you integrate `int (2+sin(x/2))^2 cos(x/2)dx` using integration by parts?
  
• How do you integrate `int x^2 cos3 x dx` using integration by parts?
  
• How do you integrate `int x sinx dx` using integration by parts?
  
• What is the antiderivative of `lnsqrt( 5 x )`?
  
• How do you integrate `int x^2 e^(-x) dx` using integration by parts?
  
• What is the antiderivative of `(ln(x+1)/(x^2))`?
  
• How do you integrate `int (4^(7x)) / (5^(2x))` using integration by parts?
  
• How do you integrate `int xe^x dx` using integration by parts?
  
• What is the antiderivative of `ln(root3(x))`?
  
• How do you integrate `int x^2 sin x dx` using integration by parts?
  
• How do you integrate `int e^x sin x dx` using integration by parts?
  
• How do you integrate `int x^3 t an x dx` using integration by parts?
  
• How do you differentiate `f(x)=e^sqrt(1-(3x+5)^2)` using the chain rule.?
  
• What is `int tan^2(x) * sec^3(x) dx`?
  
• What is `int_(pi/8)^((11pi)/12) cos^3x-sinxdx`?
  
• For `f(t)= (cost/2,sin^2t)` what is the distance between `f(pi/4)` and `f(pi)`?
  
• How do you implicitly differentiate `9=ye^(2y)/x`?
  
• Question #f3b71
  
• Given the incomplete equation for the combustion of ethane, `2C_2H_6 + 7O_2 -> 4CO_2 + 6__`, what is the formula of the missing product?
  
• What is the distance between `(8,0,6)` and `(1,-4,5)`?
  
• What is the force, in terms of Coulomb's constant, between two electrical charges of `-2 C` and `-3 C` that are `5 m` apart?
  
• What are the critical values, if any, of `f(x)=xe^(-3x)`?
  
• How do you find the integral of `int ( x^2 / sqrt(4 - x^2) ) dx`?
  
• What is `lim_(->-oo) f(x) = absx/(16-x^2)`?
  
• What's the integral of `int sin(x)tan(x) dx`?
  
• What is the general formula for the derivative of the natural logarithm?
  
• What are the first and second derivatives of `g(x) =x^2/(lnx)^2`?
  
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