Answers created by Pitufox27

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• Question #b9c49
  
• How atoms of hydrogen are there in the formula `C_2H_5OH`?
  
• How do you calculate the molarity of 0.060 moles `NaHCO_3` in 1500. mL of solution?
  
• An element that has a low first ionization energy and good conductivity of heat and electricity. What is this element classified as?
  
• How do you differentiate `f(x)=(x-3lnx)(cosx+2x)` using the product rule?
  
• A person gets cooler by perspiring. Is this a chemical or physical change?
  
• Question #bcf6f
  
• What is the difference between corrosion and erosion?
  
• How do you simplify `(cos^2x-4)/(cosx-2)`?
  
• Question #29222
  
• What are eigenvectors and eigennumbers?
  
• Question #678ec
  
• A cone with a height of 6 and a volume of 18∏. Can you fine the radius?
  
• What is `f(x) = int e^(2x-1)-e^(1-2x)+e^x dx` if `f(2) = 3`?
  
• The surface area of a cube is `486` `i``n^2`. What is the volume of the cube?
  
• Is `f(x)= sin(x+(3pi)/8)` increasing or decreasing at `x=pi/12`?
  
• Question #82d07
  
• What is the chemical formula for an ionic compound of potassium and oxygen?
  
• How do you solve and graph the inequality `-3x-1< -5x+5`?
  
• How do you simplify 2 square root -49?
  
• Question #d4070
  
• How do you write `6.92*10^-8` in standard notation?
  
• What is the maximum value of the function `y=2sin3x`?
  
• How do you solve the quadratic `7x^2+5=-137` using any method?
  
• As a general rule, does the heart rate of an animal increase or decrease with size? Is there a certain pattern?
  
• A spring with a constant of `5 (kg)/s^2` is lying on the ground with one end attached to a wall. An object with a mass of `1 kg` and speed of `12 m/s` collides with and compresses the spring until it stops moving. How much will the spring compress?
  
• How do you simplify `3/4n+3m-1/3n+1/4m`?
  
• How do you find the zeros, real and imaginary, of `y= -x^2-2x-1` using the quadratic formula?
  
• The point (-3,2) lies on a circumference whose equation is `(x+3)^2+(y+1)^2-r^2 = 0`, what is the radius of the circumference?
  
• How do you write the linear equation `-12x+8y=-32` in slope-intercept form?
  
• How do you write 19/25 as a percentage?
  
• What kind of conic is defined by the equation `2x^2+2y^2-8x+12y+2=0`?
  
• A sample of oxygen gas expands in volume from 1.6 L to 5.4 L at constant temperature. What is the work done in joules if the gas expands against a constant pressure of 0.80 atm?
  
• How do you integrate `int (x^2-1)/(x^(3/2))dx`?
  
• Question #59a03
  
• How do you solve the system of equations `13x - 5y = 20` and `13x - 5y = 10`?
  
• A man must mix some liquid fertilizer for his lawn. The instructions say to use 2 cups of chemical for every 1/2 gallon of water. How many cups of chemical will be needed for 13 gallons of water?
  
• An experiment shows that a 252 mL gas sample has a mass of 0.433 g at a pressure of 760 mm Hg and a temperature of 34 degrees C. What is the molar mass of the gas?
  
• How do you use the chain rule to differentiate `y=sin^2x/cosx`?
  
• Given `f(x)=root3(x-8)` how do you find f(-208) and f(8)?
  
• An ionic bond occurs between what particles? t
  
• A force of magnitude `F_1` accelerates a body of mass `m` from rest to speed `v`. Another force `F_2` accelerates a body of mass `2m` from rest to a speed `2m`. What is the ratio of the work done by `F_2` to that of `F_1`?
  
• How do you find the domain of `f(x)=sqrt(1/2x-10)+3`?
  
• How do you write 27/18 as a decimal?
  
• I am very confused about anti-bonding orbitals, how they form? I mean when two atomic orbitals produce bonding orbital + anti-banding orbital?? Please clear my basics. I am really worried, please solve my problem
  
• How do you find the local extremas for `f(x)=xe^x`?
  
• How do you solve `-4/7+y=-2/3`?
  
• How many seven–letter permutations can be formed from the letters of the word GIGGLES?
  
• Question #7e7e4
  
• I am very confused about anti-bonding orbitals, how they form? I mean when two atomic orbitals produce bonding orbital + anti-banding orbital?? Please clear my basics. I am really worried, please solve my problem
  
• Question #b793d
  
• How do you solve `236= - 4( - 8v - 2) + 6v`?
  
• Question #baea9
  
• How to find instantaneous rate of change for `f(x) = 3x^2+4x` at (1, 7)?
  
• How do you find the greatest common factor of 88, 66?
  
• What happens to the density of rock as it cools?
  
• What is the equation of the line that goes through `(0, 7)` and `(1,9)` in point-slope form?
  
• During an athletics training session, Jenny runs 12 laps of a 400-meter track. She wants to run a total of 8 km. How many more laps does she need to run?
  
• Question #7c363
  
• How do you find the greatest common factor of 20, 16?
  
• Is xenon reactive?
  
• How many valence electrons does `N` have?
  
• How do you find the limit of `(x-3)/(x^2+4)` as `x->1`?
  
• How do you find the limit of `x/sinx` as x approaches 0?
  
• Question #a6cdc
  
• What is the element with the lowest electronegativity value? How do you determine this?
  
• It takes Joey `1/16` of an hour to write one Thank You card. How many cards can he write in `3/4` of an hour?
  
• If the length of a side of a regular cube is 12 cm, how do you find its volume?
  
• A model train with a mass of `4 kg` is moving along a track at `18 (cm)/s`. If the curvature of the track changes from a radius of `25 cm` to `42 cm`, by how much must the centripetal force applied by the tracks change?
  
• How do you find the product of `2times10^-4` and `3.4 times 10^6`?
  
• How do you simplify `6.3 + (-3.569)`?
  
• What is the value of `x` in `g(x)=-97.2x-83.2` when `g(x)=-38`?
  
• How do you solve `11+ | - 2+ x | = 30`?
  
• How can I balance this equation? ____ `KClO_3 ->` ____ `KCl +` ____ `O_2`
  
• Question #f0b84
  
• How many unpaired electrons are in a mercury atom?
  
• Question #4821a
  
• How do you multiply `(-4i)^3`?
  
• What is the final temperature when 100 g of water at 25`"^o`C is mixed with 75 g of water at 50`"^o`C?
  
• What is `f(x) = int -x^2+x-4 dx` if `f(2) = -1`?