• Help! Ap chem Question!?

    It is known that the conversion of cyclopropane to propene is a first order reaction with a rate constant of k=6.7*10^-4*s^-1 at 500 degrees Celsius. If the initial concentration was 0.5M, what is the cyclopropane concentration after 10 minutes? First Order Rate Equation: ln[A]t=-kt+ln[A]0
    It is known that the conversion of cyclopropane to propene is a first order reaction with a rate constant of k=6.7*10^-4*s^-1 at 500 degrees Celsius. If the initial concentration was 0.5M, what is the cyclopropane concentration after 10 minutes? First Order Rate Equation: ln[A]t=-kt+ln[A]0
    Chemistry · 3 days ago
  • Help! Trig Question!?

    A car travels 250 km east, then turns 25 degrees south of east and goes 115km. What is the resultant distance traveled? Round to the nearest tenth.
    A car travels 250 km east, then turns 25 degrees south of east and goes 115km. What is the resultant distance traveled? Round to the nearest tenth.
    4 answers · Mathematics · 5 days ago
  • Trig help? Multiple choice?

    A boat, initially traveling 150 mi/hr 100 degrees east of north, suddenly enters a region where the wind is blowing at 50 mi/hr from the southwest. What is the boats resultant direction? A: 90.22 degrees B: 87.09 degrees C: 9.78 degrees D: 10 degrees
    A boat, initially traveling 150 mi/hr 100 degrees east of north, suddenly enters a region where the wind is blowing at 50 mi/hr from the southwest. What is the boats resultant direction? A: 90.22 degrees B: 87.09 degrees C: 9.78 degrees D: 10 degrees
    2 answers · Mathematics · 5 days ago
  • Please help! Chemistry Question!?

    The van't Hoff factor for NaCl is 1.9. What concentration for NaCl should be used for a medical saline solution if the osmotic pressure of blood is about 7.35atm? Assume body temp is 37 degrees Celsius. Round answer to tenths.
    The van't Hoff factor for NaCl is 1.9. What concentration for NaCl should be used for a medical saline solution if the osmotic pressure of blood is about 7.35atm? Assume body temp is 37 degrees Celsius. Round answer to tenths.
    Chemistry · 5 days ago
  • Please help! Chemistry question!! What is the osmotic pressure in atm of a 0.50 M urea solution at 25 degrees Celsius?

    Assume R=0.08206 L * atm/mol*K Please help and offer some explanation if you can, I keep getting it wrong and every time I get it wrong I have to watch a 15 minute long video :(
    Assume R=0.08206 L * atm/mol*K Please help and offer some explanation if you can, I keep getting it wrong and every time I get it wrong I have to watch a 15 minute long video :(
    2 answers · Chemistry · 6 days ago
  • Trig question?

    Hopefully the photo will work. https://www.flickr.com/photos/162197805@...
    Hopefully the photo will work. https://www.flickr.com/photos/162197805@...
    Mathematics · 6 days ago
  • What is the freezing point,in Celsius, of a 1.56 m aqueous solution of K3PO4?

    Note: Kf for water is 1.86 C/m
    Note: Kf for water is 1.86 C/m
    1 answer · Chemistry · 1 week ago
  • Calculate the vapor pressure (in torr) of a 35 degree C solution of ethanol and propanol where the mole fraction of propanol is 0.75.?

    Assume ideal behavior. P ethanol35=100 torr P propanol35= 36torr ( I had posted this before, but accidentally left out some important information.) Thank you!
    Assume ideal behavior. P ethanol35=100 torr P propanol35= 36torr ( I had posted this before, but accidentally left out some important information.) Thank you!
    1 answer · Chemistry · 1 week ago
  • Find cos 2thera if thera is in the first quadrant and tan theta= 40/9.?

    Give your answer to the nearest thousandth.
    Give your answer to the nearest thousandth.
    6 answers · Mathematics · 1 week ago
  • Trig question?

    Find the value of sin2*theta if theta is in the fourth quadrant and sin theta =-1/2
    Find the value of sin2*theta if theta is in the fourth quadrant and sin theta =-1/2
    4 answers · Mathematics · 1 week ago
  • Calculate the vapor pressure in torr of a 35 degrees C solution of ethanol and propanol wher the mole fraction=0.75.?

    Assume ideal behavior. P ethanol35=100 torr P propalol35=36torr
    Assume ideal behavior. P ethanol35=100 torr P propalol35=36torr
    1 answer · Chemistry · 1 week ago
  • A solution contains two substances, x and y, both volatile components.?

    Calculate the vapor pressure in torr of this solution when the mole fraction of x is 0.82. Assume ideal behavior. Px=320 torr Py=412 torr
    Calculate the vapor pressure in torr of this solution when the mole fraction of x is 0.82. Assume ideal behavior. Px=320 torr Py=412 torr
    1 answer · Chemistry · 1 week ago
  • A solution contains 180 grams of glucose and 500 ml of water at 25 degrees C. What is the vapor pressure of the solution in torr?

    ( Vapor pressure of pure water at 25 degrees C is 23.8 torr and assume the density of water is 1g/ml )
    ( Vapor pressure of pure water at 25 degrees C is 23.8 torr and assume the density of water is 1g/ml )
    1 answer · Chemistry · 1 week ago
  • Chemistry Question?

    1.5 moles of a solute are added to 2.0 liters of water at 25 degrees C. What is the vapor pressure of the solution in torr? ( Vapor pressure of pure water at 25 degrees C is 23.8 torr and assume the density of water is 1g/ml )
    1.5 moles of a solute are added to 2.0 liters of water at 25 degrees C. What is the vapor pressure of the solution in torr? ( Vapor pressure of pure water at 25 degrees C is 23.8 torr and assume the density of water is 1g/ml )
    1 answer · Chemistry · 2 weeks ago
  • Trig question?

    Solve for x when pi/2 <(or equal to) x <)or equal to) 3pi/2 -4cos²(x) + (4√2)sin(x) + 6
    Solve for x when pi/2 <(or equal to) x <)or equal to) 3pi/2 -4cos²(x) + (4√2)sin(x) + 6
    2 answers · Mathematics · 2 weeks ago
  • -4cos^2*(x)+4*sqrt(2)*sinx+6=0?

    1 answer · Mathematics · 2 weeks ago
  • Trig Question?

    Solve for x when 0<(or equal to) x<(or equal to) pi/2 4 * (sqrt(3)) * (cscx) - 4 -(3csc^2x)=0
    Solve for x when 0<(or equal to) x<(or equal to) pi/2 4 * (sqrt(3)) * (cscx) - 4 -(3csc^2x)=0
    3 answers · Mathematics · 2 weeks ago
  • Another trig question?

    I'm really wanting to finish my trigonometry class by the time break is over so that I can start taking pre-calc when school starts. However, I just keep running into problems that stump me. Here's one that I'm on right now: Find x where pi/2 <(or equal to) x <(or equal to) 3pi/2 3tan^2x-8=cos^2x+sin^2x Enter your answers from... show more
    I'm really wanting to finish my trigonometry class by the time break is over so that I can start taking pre-calc when school starts. However, I just keep running into problems that stump me. Here's one that I'm on right now: Find x where pi/2 <(or equal to) x <(or equal to) 3pi/2 3tan^2x-8=cos^2x+sin^2x Enter your answers from smallest to largest, separated by a comma. Thanks in advance!
    4 answers · Mathematics · 3 weeks ago
  • Trig question!?

    Simplify: sin^2x - cosx(cos(-x))sin^2x
    Simplify: sin^2x - cosx(cos(-x))sin^2x
    6 answers · Mathematics · 3 weeks ago
  • Question about ball python feeding?

    I have been wanting to get a ball python for awhile. I've done countless amounts of research on it, and I know that they have a tendency to be picky eaters. Some people I have watched have had to feed their ball pythons live food because they wouldn't eat anything else. I know that it is often dangerous to feed a snake live food due to the... show more
    I have been wanting to get a ball python for awhile. I've done countless amounts of research on it, and I know that they have a tendency to be picky eaters. Some people I have watched have had to feed their ball pythons live food because they wouldn't eat anything else. I know that it is often dangerous to feed a snake live food due to the food fighting back, so I really don't ever want to feed live. I know a lot of people who have never had a problem feeding their ball python, but there are also many others that have. I will definitely be buying one from a breeder that has been feeding frozen thawed rodents all of the snake's life if I do choose to get one. My question (finally) is, what are the chances that a ball python that has never eaten live will go on a hunger strike until it gets live?
    2 answers · Reptiles · 2 months ago