Answers edited by Surya K.

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• Prove that #2cot(x/2) (1-cos^2(x/2))#is identical to #sinx# ?
  
• Question #5873d
  
• Solve for #x# when #log(x^2-x-6)+x=log(x+2)+4#?
  
• Question #fde90
  
• How do you differentiate #f(x)=sec^2(e^(x^4) ) # using the chain rule?
  
• What is the domain and range of #f(x) = 2 - e ^ (x / 2)#?
  
• Question #b3dab
  
• Question #30dd4
  
• How do you use the area of a triangle to solve for b?
  
• How do you solve #sqrt(x+72) = x#?
  
• A room kept at STP is filled with ozone, #O_3# contains a total of #5.41 xx 10^58# atoms of oxygen. What is the volume (in liters) of the room?
  
• For #x^2 - 6x +9 =0#, how many number of distinct solutions are there, and are they rational, irrational or non real complex numbers?
  
• Question #c0970
  
• How do you find the first and second derivative of #(lnx)/x^2#?
  
• How do you find the derivative of #e^(-5x^3+x)#?
  
• What is the simplest form of #sqrt(80x7y5)#?
  
• Question #e6979
  
• How to do this question?
  
• If i have 4.00 moles of gas at a pressure of 5.6 atm and a volume of 12 liters, what is the temperature?
  
• What is the second derivative?
  
• Question #b7835
  
• Calculate the density of CH4 at 0°C and 1 atmospheric pressure?
  
• A 0.176 mol sample of Kr gas is contained in a 8.00 L flask at room temperature and pressure. What is the density of the gas, in grams/liter, under these conditions?
  
• Question #ea6cb
  
• How do you solve for #g# in #T = 2pi sqrt(L/g)#?
  
• Chloroform is a hydrocarbon or not?
  
• How many grams of chromium are needed to react with an excess of #CuSO_4# to produce 16.2 g Cu?
  
• How do you simplify #i^20#?
  
• How do you integrate #int t sin(mt)dt# where m does not equal 0?
  
• Question #07d97
  
• Question #08486
  
• Write a balanced equation to show the reation of sulfurus acid with lithium hydroxide to form lithium sulfite and water ??
  
• Question #9dc07
  
• What is the limit of(1+(1/x))^5x as x approaches infinity?
  
• How do you simplify #64^ { - 9^ { - 8^ { - 3} }#?
  
• A ball is dropped from the top of a tall building. It took 3.0 secs for the ball to hit the ground. The acceleration of gravity is g = 10 m/sec^2. The initial velocity was 0 m/sec. What was the ball's downward velocity?
  
• What is the empirical formula of a compound comprised of 1.75% hydrogen, 56.1% sulfur and 42.15% oxygen?
  
• What is the vertex of #y=3x^2 +12x - 16 #?
  
• What are all the zeroes of the function #f(x) = x^2-169#?
  
• How do you divide #( i+3) / (-i +9 )# in trigonometric form?
  
• How to resolve #lim_(x to oo)root(4)x e^(-2x)#???
  
• Question #cb01f
  
• If 283g KClO3 react, how many grams of O2 will be produced?
  
• How do you expand #\log \sqrt { x ^ { 4} y }#?
  
• Question #0b882
  
• How do you solve #t^2+16=0# using the quadratic formula?
  
• Question #7aa60
  
• Question #6cbbb
  
• How do you expand #(2x-3)^5 # using Pascal’s Triangle?
  
• Why doesn't absolute value affect a sideways parabola?
  
• Why will no salt form in the reaction between AgCl and HNO3?
  
• How do you differentiate #z=t^2/((t-4)(2-t^3))# using the quotient rule?
  
• Question #86860
  
• Question #55088
  
• If # y = (sinx)^(sinx) # then find #dy/dx#?
  
• A 10 L flask contains 2g of CH4,3g of hydrogen and 4g of nitrogen at 20 ˚ C. a. What is the pressure, in atm inside the flask? b. What is the partial pressure of each component of the mixture of gases?
  
• #inte^(3x)sin(4x)dx#?
  
• A sample of 1cm3 of hydrogen and 1cm3 of oxygen both at NTP.which has a larger number of molecule ?
  
• How do you convert #y=x^2+18x+95# in vertex form?
  
• How do you express the value as a trigonometric function of an angle in Quadrant I given #csc(-330^circ)#?
  
• For what values of x, if any, does #f(x) = tan((5pi)/4-x) # have vertical asymptotes?
  
• The Half-Life Of A Certain Isotope Is 2 Hours.If The Original Mass of Isotope was 12,000 Grams,How Many Grams Would Be Left After 1 Day?
  
• What is the mass of #"22.4 L N"_2"# at #"NTP"#?
  
• What is the volume of 4.1g N2 at STP?
  
• Question #b8162
  
• Question #b8418
  
• Integrate the following? lnx/x^2 dx
  
• How do you graph #y=15e^(-.25t)cos(1.2pit)#?
  
• How do I find the derivative of #f(x)=ln(x^2)#?
  
• Mcq When zinc poweder is added to acetic acid ? A.the mixture becomes warm B.a gas is evolved C.the colour of mixture becomes yellow D.a solid settles at the bottom
  
• #inte^(3x)sin(4x)dx#?
  
• If you have 16.8 L of gas at 1.0 atm, what is the new pressure if the volume is reduced to 15.0 L?
  
• Question #a53f5
  
• What are the asymptote(s) and hole(s), if any, of # f(x) =(-2x^2-6x)/((x-3)(x+3)) #?
  
• Focal length of convex lens is 3cm. Find the image distance if object of height 2cm is placed at 7cm from lens?