Answers created by Nathan L.

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• If mass % of Oxygen in a monovalent metal carbonate is 48. Then find the number of atoms of metal present in 5mg of this metal carbonate sample?`( N_a = 6.022 * 10^23)`
  
• Question #018b8
  
• If a `4 kg` object moving at `2/3 m/s` slows to a halt after moving `6 m`, what is the coefficient of kinetic friction of the surface that the object was moving over?
  
• Question #e4d6c
  
• Question #be539
  
• A `4.60*L` volume of gas at `845*mm*Hg` pressure is expanded such that the new pressure is `368*mm*Hg`. To what volume does it expand?
  
• A graduated cylinder has a mass of 50 g when empty. When 30 mL of water is added, it has a mass of 120 g. If a rock is added to the graduated cylinder, the level rises to 75 ml and the total mass is now 250 g. What is the density of the rock?
  
• Question #351ba
  
• How do you convert `(1,-2)` into polar form?
  
• Question #dcad3
  
• Question #bcf2e
  
• Question #f65ea
  
• What gases in Earth's atmosphere would you expect to find as molecules and which as individual atoms?
  
• Lisa will make punch that is 25% fruit juice by adding pure fruit juice to a 2-liter mixture that is 10% pure fruit juice. How many liters of pure fruit juice does she need to add?
  
• An object with a mass of `6 kg` is on a plane with an incline of `-(3 pi)/8`. If it takes `15 N` to start pushing the object down the plane and `5 N` to keep pushing it, what are the coefficients of static and kinetic friction?
  
• Projectile Motion ?
  
• The force applied on a moving object with a mass of `1 kg` on a linear path is given by `F(x)=x^2+3`. How much work would it take to move the object over `x in [1,2]`?
  
• A truck pulls boxes up an incline plane. The truck can exert a maximum force of `5,200 N`. If the plane's incline is `(5 pi )/8` and the coefficient of friction is `4/3`, what is the maximum mass that can be pulled up at one time?
  
• Question #e1645
  
• Question #4462e
  
• Question #9881b
  
• Question #3abf0
  
• Question #5c9ea
  
• Question #c287b
  
• Question #248e7
  
• Given `K_c = 0.36` at `2000^@ "C"` for `"N"_2"O"_4(g) rightleftharpoons "NO"_2(g)`, if the initial concentration of `"NO"_2` is `"1 M"`, what are the equilibrium concentrations of `"N"_2"O"_4(g)` and `"NO"_2(g)`?
  
• Question #1efb7
  
• Question #d4999
  
• Awater pail in your backyard has a small hole in it. You notice that it has drained a total of 3.5 liters in 4 days. What is the average change in water volume each day?
  
• Question #6308e
  
• A truck pulls boxes up an incline plane. The truck can exert a maximum force of `2,400 N`. If the plane's incline is `(2 pi )/3` and the coefficient of friction is `5/8`, what is the maximum mass that can be pulled up at one time?
  
• A truck pulls boxes up an incline plane. The truck can exert a maximum force of `4,500 N`. If the plane's incline is `(5 pi )/8` and the coefficient of friction is `7/6`, what is the maximum mass that can be pulled up at one time?
  
• Question #3fa99
  
• The complete combustion of 1 mole of pentane, `C_5H_12`, will require how many moles of oxygen, `O_2`?
  
• Question #7f3c3
  
• If Justin races his Chevy Camaro South down I-540 for 2560 meters in 60 seconds. What is his velocity?
  
• Question #5c383
  
• What it the basic formula for a double displacement equation?
  
• Question #c5e8c
  
• Question #e7c74
  
• Question #2212e
  
• How do you graph `log_2(x-4)`?
  
• A machine gun fires 10 rounds per second. The speed of the bullets is 300 m/s. What is the distance in the air between the flying bullets?
  
• Question #f7f80
  
• Question #338d5
  
• The force applied against a moving object travelling on a linear path is given by `F(x)=1+xe^x`. How much work would it take to move the object over `x in [1,2 ]`?
  
• When is a particle in projectile motion at its maximum height? What is true about its velocity when this occurs? Why?
  
• A tugboat pulls a ship with a constant net horizontal force of `5.00 * 10^3` `N` and causes the ship to move through a harbor. How much work is done if the ship if it moves a distance of `3.00` `km`?
  
• Question #97fb1
  
• Question #a4f96
  
• How many particles are in a mole?
  
• Question #d67b8
  
• How to simplify this imaginary expression?
  
• How much work would it take to horizontally accelerate an object with a mass of `8 kg` to `3 m/s` on a surface with a kinetic friction coefficient of `6`?
  
• The gas inside of a container exerts `12 Pa` of pressure and is at a temperature of `360 ^o K`. If the pressure in the container changes to `64 Pa` with no change in the container's volume, what is the new temperature of the gas?
  
• What is the average speed of an object that is not moving at `t=0` and accelerates at a rate of `a(t) =5-t^2/4` on `t in [2,4]`?
  
• Pure water and alcohol are mixed to get a 60% (weight) alcohol solution. The densities in Kg/m3 of water, alcohol and the solution may be taken as 998, 798 and 895 respectively at 293 K. Estimate the molarity and molality??
  
• Ten moles of a gas are contained in a 1.00 L container at 295 K. What is the pressure of the gas?
  
• Question #03d52
  
• What are group of elements in the same horizontal (side to side) row called?
  
• Question #99084
  
• What is the approximately length of the mobile phone? Steps please..
  
• The boiling point of a solution containing 10.44g og an unknown nonelectrolyte in 50g of acetic acid is 159.2 degree celsius. What is the molar mass of the solute?
  
• How can I make my answer featured?
  
• An object's two dimensional velocity is given by `v(t) = ( 3t^2 - 2t , t )`. What is the object's rate and direction of acceleration at `t=1`?
  
• How much work did the movers do (horizontally) pushing a 46.0-kg crate 10.3 m across a rough floor without acceleration, if the effective coefficient of friction was .50?
  
• The speed 1 km/sec is equal to _____ mm/microsecond ?
  
• The velocity of a particle moving along the x-axis is given by v(t) = tsin(t^2). Find the total distance traveled from t = 0 to t = 3. A) 1.0 B) 1.5 C) 2.0 D) 2.5 E) 3.0 ?
  
• Car is driving with a speed of 36km/h. Then the car stops completely in 2 seconds. What is the negative acceleration of the car?
  
• Question #e7110
  
• What is the atomic number of neon?
  
• How do you differentiate `f(x)=e^x*sin^2x` using the product rule?
  
• How do you use the chain rule to differentiate `y=1/(x^4+x)^2`?
  
• What kind of bond is created by a weak electrical attraction between polar molecules?
  
• Aluminum can react with oxygen gas to produce aluminum oxide (`Al_2O_3`). What type of reaction is this?
  
• Question #6108a
  
• Question #e676b
  
• Green light has a wavelength of 5200 A. How do you calculate the energy of one photon of green light?
  
• How do you write the complex number in standard form `3/2(cos300+isin300)`?
  
• Question #18144
  
• Question #2027f
  
• Question #117eb
  
• The temperatures on Mercury range from 279 F to 800 F. What is the difference between the highest and lowest temperatures?
  
• Question #f6259
  
• What is the derivative of `tan^7(x^2)`?
  
• An object with a mass of `12 kg` is on a surface with a kinetic friction coefficient of `2`. How much force is necessary to accelerate the object horizontally at `14 m/s^2`?
  
• What is the polar form of `( 0,0 )`?
  
• An object with a mass of `1 kg` is pushed along a linear path with a kinetic friction coefficient of `u_k(x)= 2e^x-x+3`. How much work would it take to move the object over `x in [1, 4]`, where x is in meters?
  
• How do you normalize `(- 2i - j - k)`?
  
• Question #ad51c
  
• The destination of your trip is 456 miles away. How much time will you need to make the trip if you drive 75 miles per hour and take 4 rest stops that average 21 minutes each?
  
• Question #45384
  
• An object with a mass of `14 kg` is on a plane with an incline of `- pi/3`. If it takes `12 N` to start pushing the object down the plane and `11 N` to keep pushing it, what are the coefficients of static and kinetic friction?
  
• An object with a mass of `5 kg` is on a plane with an incline of `pi/8`. If the object is being pushed up the plane with `3 N` of force, what is the net force on the object?
  
• A box with an initial speed of `3 m/s` is moving up a ramp. The ramp has a kinetic friction coefficient of `5/7` and an incline of `( 5 pi )/12`. How far along the ramp will the box go?
  
• Question #1e5b4
  
• A container with a volume of `42 L` contains a gas with a temperature of `150^o K`. If the temperature of the gas changes to `75 ^o K` without any change in pressure, what must the container's new volume be?
  
• How do you find a polynomial function that has zeros `1+sqrt3, 1-sqrt3`?
  
• An object with a mass of `2 kg` is on a plane with an incline of `- pi/3`. If it takes `12 N` to start pushing the object down the plane and `4 N` to keep pushing it, what are the coefficients of static and kinetic friction?
  
• A truck pulls boxes up an incline plane. The truck can exert a maximum force of `2,800 N`. If the plane's incline is `(2 pi )/3` and the coefficient of friction is `3/8`, what is the maximum mass that can be pulled up at one time?
  
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