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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