Friday
August 28, 2015

Posts by K


Total # Posts: 799

aig math
Pat= x , Kyle= y, Ryan= z x+y+z= 306 2x= y+z z+18=y So from here, you just plug the equations into each other... 2x= y+z so, 2x= (z+18)+z so, 2x= 2z+18 so, x= (2z+18) /2 Then you plug this in to the equation: x+y+z= 306 So... (2z+18) /2 + (z+18) + z = 306 Then, 4z+38 = 612 4z...
March 25, 2013

aig math
so just do this... 8x+6x+9x then you know that 8x+6x= 84 so, 14x=84 so, x=6 then you multiply 6 by 9, and your answer is 54 marbles
March 25, 2013

chemistry
Thanks so much! :)
March 24, 2013

chemistry
At a certain temperature, the concentrations of NO and NH3 are equal, and the concentration of H2o and o2 are 2.0M and 3.0M respectively. What is the value of Keq at this temp? The equation is 5O2+4NH3--> 4NO+6H20
March 24, 2013

Math
determine the equation of a line that passes through (2,1) and is parallel to the line 3x-7y=5
March 23, 2013

college algebra
A rectangular box with no top is to be constructed from a 10 in. x 10 in square piece of cardboard by cutting equal square of side x from each corner and then bending up the sides. Write the volume of the box as a function of x.
March 23, 2013

algebra 2nd try
(2√3:((49)^(2)))/(49)
March 23, 2013

college algebra
A rectangular box with no top is to be constructed from a 10 in. x 10 in square piece of cardboard by cutting equal square of side x from each corner and then bending up the sides. Write the volume of the box as a function of x.
March 23, 2013

college algebra
A roll of 640 feet of chicken wire is used to enclose a rectangular vegetable garden.Express the area A of the garden in terms of its length (x)
March 23, 2013

Math
C.because it takes 3 min per problem which equal out to 8 problem in 24 min and in 54 min you can solve 18.
March 23, 2013

college algebra
A rectangular box with no top is to be constructed from a 10 in. x 10 in square piece of cardboard by cutting equal square of side x from each corner and then bending up the sides. Write the volume of the box as a function of x.
March 23, 2013

college algebra
A roll of 640 feet of chicken wire is used to enclose a rectangular vegetable garden.Express the area A of the garden in terms of its length (x)
March 23, 2013

Math Ms. Sue please
help
March 22, 2013

math check answer
what is true a a trend line data
March 22, 2013

chemistry
why is it necessary to try and keep the temperature constant during an experiment of determining pKa by pH measurements?
March 22, 2013

chemistry
how do i calculate the NaOH molarity from a titration of KHP and NaOH after preparing KHP to standardise NaOH. KHP mass was 2.0378g dissoveld in distilled water to fill up a 100ml volumetric flask and only 10ml of this solution was used to in titration
March 22, 2013

business math
Oprah Winfrey ha closed on a 42- acre estate near Santa Barbara California for $50,000,000 If Oprah puts down 20% down and finances at 7% for 30 years what would be her monthly pay payment.
March 21, 2013

physics
Object I is a solid cylinder with diameter d has resistance R. What would be resistance of another object made of the same material and with the same mass as Object I but has the cross section shown below (it is a hollow cylinder with outer diameter 2d and inner diameter d). R...
March 21, 2013

physics
Object I is a solid cylinder with diameter d has resistance R. What would be resistance of another object made of the same material and with the same mass as Object I but has the cross section shown below (it is a hollow cylinder with outer diameter 2d and inner diameter d).
March 21, 2013

physics
Light bulb packages will have at least two numbers on them; a power and what the potential difference across the bulb must be so that the bulb has the listed power. You go to the store and purchase two light bulbs. The package for Bulb A says 40 W in a large font with 120 V in...
March 20, 2013

physics
The figure below shows a collection of wires. The currents at the numbered points are: I1 = 2.4 mA right; I2 = 3.6 mA down; I3 = 0.60 mA right; I4 = 4.0 mA up; and I5 = 1.6 mA up. i. imgur. com/SCyljHG. png a. What is the current at point A (size and direction)? b. What is the...
March 20, 2013

Chemistry
just kidding i figured it out
March 20, 2013

Chemistry
On Easter Sunday, April 23, 1983, nitric acid (HNO3) spilled from a tank car near downtown Denver, Colorado. The spill was neutralized with sodium carbonate (Na2CO3). 2HNO3(aq) + Na2CO3(s) -> 2NaNO3(aq) + H2O(l) + CO2(g) deltaH=-69.0kJ a. How much heat is released by the ...
March 20, 2013

business
Pikes Peak Harley Davidson. offered to finance a new motorcycle for qualifying customers at 15% downer 7.5% interest for 48 months during July 2009 Rich Martinez was interested in calculate what his monthly payment would be if he bought a $29,386 bike.
March 17, 2013

physics
A parallel capicitor is made of two plates with cross sectional area A which are separated by a distance d (with a vacuum between the plates). The capacitor is connected to a battery until a charge Q is stored on it and a total potential difference VC is measured across the ...
March 14, 2013

Math
If you multiply 100!*200!*300!, how many 0s are there?
March 13, 2013

calculus help please!
I know you got 8 from because it is the radius but can you explain why you are using cot?
March 12, 2013

MATH VERY URRRGENT!!!!!!!!!!!!!
one of them was wrong
March 9, 2013

Chem
Thank you so much
March 8, 2013

Chem
In procedure B2, you will titrate a saturated solution to find out how much of the anion dissolved. Assume you we're able to dissolve about 0.12g of potassium hydrogen tartrate in 25.0 mL of water. For the titration, you will use 10.00mL of this sample. How many mL of 0....
March 8, 2013

Geometry
110
March 7, 2013

Chemistry
Sodium azide (NaN3) yields N2 gas when heated to 300 degrees Celsius , a reaction used in automobile airbags. If 1.00 mol of N2 has a volume of 47.0 liters under the reaction conditions , how many liters of gas can be formed by heating 35g of NaN3? The reaction is 2Nan3------&...
March 3, 2013

economincs
The price elasticity of demand for imported whiskey is estimated to be −0.20 over a wide interval of prices. The federal government decides to raise the import tariff on foreign whiskey, causing its price to rise by 20 percent. a. Will the quantity demanded on imported ...
February 27, 2013

Chem lab last question!! Urgent help
Commodity prices of NaCl and urea are about $0.033/lb for NaCl (as rock salt) and about $0.10/lb for urea. Calculate the cost of treating 1000 lb of ice on a surface to produce a solution that melts at -3.9 degrees Celsius with each chemical. I know you use to delta T= mkfi ...
February 27, 2013

Chem please help urgent
why is the formation of a condensation polymer impossible in these cases ? A) ethanoic acid + NH2CH2CH2CH2CH2NH2 B) ethanoic acid+CH3CH2NH2 C) HOOC-CH2-COOH + CH3CH2NH2
February 27, 2013

Chem please help me I need help
I am having trouble on this please help Indicate which of these statements is true? For those that are false,.explain why a) addition reactions always involve compounds with multiple bonds b) all addition reactions produce polymers, but not all polymers are addition polymers c...
February 27, 2013

Chem please help
why is the formation of a condensation polymer impossible in these cases ? A) ethanoic acid + NH2CH2CH2CH2CH2NH2 B) ethanoic acid+CH3CH2NH2 C) HOOC-CH2-COOH + CH3CH2NH2
February 27, 2013

please help me on chem
Commodity prices of NaCl and urea are about $0.033/lb for NaCl (as rock salt) and about $0.10/lb for urea. Calculate the cost of treating 1000 lb of ice on a surface to produce a solution that melts at -3.9 degrees Celsius with each chemical. I know you use to delta ...
February 27, 2013

chemistry
I am having trouble on this please help Indicate which of these statements is true? For those that are false,.explain why a) addition reactions always involve compounds with multiple bonds b) all addition reactions produce polymers, but not all polymers are addition polymers c...
February 27, 2013

chemistry
Pleaseeeee helpppp me
February 26, 2013

chemistry
Commodity prices of NaCl and urea are about $0.033/lb for NaCl (as rock salt) and about $0.10/lb for urea. Calculate the cost of treating 1000 lb of ice on a surface to produce a solution that melts at -3.9 degrees Celsius with each chemical. I know you use to delta T= mkfi ...
February 26, 2013

Chemistry
My teacher say I don't have to show any calculation so how do I explain it using the graph I have for both??
February 26, 2013

Chemistry
So nacl is effective in both cases
February 26, 2013

Chemistry
Sorry wrong post
February 26, 2013

Chemistry
I found molality of urea but I am not sure how to do after
February 26, 2013

Chemistry
I have o.236 g for urea and 0.235g for NaCl. And the question is On a gram basis, which is more effective in depressing the freezing point, urea or NaCl? On a mole basis, which Is more effective? I am confused on what depressing the freezing point me and idk how to explain the...
February 26, 2013

Algebra
The answer is x=1 :)
February 21, 2013

Science
I need to calcuted the molarity from this 12.5 g of ethylene glycol antifreeze dissolved in o.100kg of water. Density of solution is 1.0 g/mL I know molarity if mole of solute / L of solution. I am confused on how to find the L of solution. Do I add 12.5 and .100g to get the ...
February 15, 2013

Chemistry
But that one was density of solution, but this problem is density of water so is that different???
February 15, 2013

chemistry
what are the fundamental particles in antifreeze
February 13, 2013

English Plz Help
help
February 1, 2013

college chem
I am still very confused
February 1, 2013

college chem
Thank you but I am not sure what you mean by derive it
February 1, 2013

college chem
A researcher explores the ideal gas equation. He measures the pressure of a system at different temperatures ( keeping the volume and moles of the gas constant) and creates a plot of P versus T. What is the slope of the line that results if the volume is 1.0L when 1.0 mol of ...
February 1, 2013

organic chem
i. imgur. com/J6VpPrc. png what is the mechanism (electron pushing) of this reaction?
January 31, 2013

science
how much water can dissolve in 700ml of water at 50 c?
January 31, 2013

calculus
three bowls are filled to a depth of four units. a paraboloid, z=x^2 +y^2 for 0<z<4, a cone z=(x^2 + y^2)^(1/2) for 0<z<4, and a hyperboloid z=(1+x^2+y^2)^(1/2) for 1<z<5. which bowl holds more water?
January 29, 2013

physics
A near-sighted person might correct his vision by wearing diverging lenses with focal length f = 60 cm. When wearing his glasses, he looks not at actual objects but at the virtual images of those objects formed by his glasses. Suppose he looks at a 10-cm-long pencil held ...
January 28, 2013

organic chemistry
you divide that by 2 so it's 1
January 24, 2013

organic chemistry
there is only 1 degree of unsaturation
January 24, 2013

organic chemistry
what is this compound, it has a mf of c6h12o i. imgur. com/gCgw0Hi. png
January 24, 2013

physic 108
A charged nonconducting rod, with a length of 3.83 m and a cross-sectional area of 5.69 cm2, lies along the positive side of an x axis with one end at the origin. The volume charge density ρ is charge per unit volume in coulombs per cubic meter. How many excess electrons ...
January 21, 2013

Design
New Wave
January 16, 2013

physics
A 91.0 N grocery cart is pushed 17.1 m along an aisle by a shopper who exerts a constant horizontal force of 42.0 N. The acceleration of gravity is 9.81 m/s2 . If all frictional forces are neglected and the cart starts from rest, what is the grocery cart’s final speed? ...
January 16, 2013

Letter to Mrs.Sue
what happened? And gabby, check my question please.. I'm confused!
December 16, 2012

math
The perimeter of the office bulletin board is 24 ft. The perimeter of the sandbox is 1 1/2 times as long. What is the perimeter of the sandbox?
December 14, 2012

physics
20
December 13, 2012

Physics
(77.6)(3500)(2.78)=M(2.42E^6) 755048=M(2.42E^6) M=0.312
December 5, 2012

Physics
A spaceship of mass 2.3×10^6 kg is cruising at a speed of 6.0×10^6 m/s when the antimatter reactor fails, blowing the ship into three pieces. One section, having a mass of 5.2×10^5 kg, is blown straight backward with a speed of 2.0×10^6 m/s. A second ...
November 26, 2012

Physics
A 1.1 kg block slides along a friction-less surface at 1.4 m/s. A second block, sliding at a faster 4.3 m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.6 m/s. What was the mass of the second block?
November 26, 2012

Physics
A 9.6 kg dog takes a nap in a canoe and wakes up to find the canoe has drifted out onto the lake but now is stationary. He walks along the length of the canoe at 0.53 m/s, relative to the water, and the canoe simultaneously moves in the opposite direction at 0.12 m/s. What is ...
November 26, 2012

Physics
A 9.6 kg dog takes a nap in a canoe and wakes up to find the canoe has drifted out onto the lake but now is stationary. He walks along the length of the canoe at 0.53 m/s, relative to the water, and the canoe simultaneously moves in the opposite direction at 0.12 m/s. What is ...
November 26, 2012

Math
5/36
November 19, 2012

Physics
an object has a charge of -2.0 microcoloumbs, how many electrons must be removed so that the charge becomes +3.0 microcoloumbs? I'm not sure of which formula to use
November 15, 2012

math but also probability
1/81
November 15, 2012

world history
Why did different regions in Africa develop in different ways between 1000 and 1700?
November 14, 2012

algebra
six people ate one tenth of a pie and there was two fifth left. How much pie did she start with?
November 13, 2012

chem
what is the ph of a solution in which 250.0 ml of .200 M HNO3 is added to 280.0 ml of .150 Ba(OH )
November 13, 2012

chem
what is the ph of a solution in which 250.0 ml of .200 M HNO3 is added to 280.0 ml of .150 Ba(OH )
November 13, 2012

chem
what is the ph of a solution in which 250.0 ml of .200 M HNO3 is added to 280.0 ml of .150 Ba(OH )
November 13, 2012

chem
what is the ph of a solution in which 250.0 ml of .200 M HNO3 is added to 280.0 ml of .150 Ba(OH )
November 13, 2012

chem
what is the ph of a solution in which 250.0 ml of .200 M HNO3 is added to 280.0 ml of .150 Ba(OH )
November 13, 2012

chem
what is the ph of a solution in which 250.0 ml of .200 M HNO3 is added to 280.0 ml of .150 Ba(OH )
November 13, 2012

statistics
1/6
November 12, 2012

PHYSICS!!!
Water flowing through a garden hose of diameter 2.72 cm fills a 25.0-L bucket in 1.10 min. (a) What is the speed of the water leaving the end of the hose? m/s (b) A nozzle is now attached to the end of the hose. If the nozzle diameter is one-third the diameter of the hose, ...
November 11, 2012

PHYSICS!!!
A liquid (ñ = 1.65 g/cm3) flows through a horizontal pipe of varying cross section as in the figure below. In the first section, the cross-sectional area is 10.0 cm2, the flow speed is 288 cm/s, and the pressure is 1.20 105 Pa. In the second section, the cross-sectional...
November 11, 2012

PHYSICS!!!
A hypodermic syringe contains a medicine with the density of water (figure below). The barrel of the syringe has a cross-sectional area of 2.89 10-5 m2. In the absence of a force on the plunger, the pressure everywhere is 1.00 atm. A force of magnitude 2.13 N is exerted on the...
November 11, 2012

PHYSICS!!!
Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 105 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.22 105 Pa and the pipe radius is 1.70 cm. (a) ...
November 11, 2012

PHYSICS!!!
The Venturi tube shown in the figure below may be used as a fluid flowmeter. Suppose the device is used at a service station to measure the flow rate of gasoline (ñ = 7.00 102 kg/m3) through a hose having an outlet radius of 2.72 cm. The difference in pressure is ...
November 11, 2012

PHYSICS!!!
A square metal sheet 3.1 cm on a side and of negligible thickness is attached to a balance and inserted into a container of fluid. The contact angle is found to be zero, as shown in Figure (a), and the balance to which the metal sheet is attached reads 0.40 N. A thin veneer of...
November 11, 2012

PHYSICS!!!
To lift a wire ring of radius 1.95 cm from the surface of a container of blood plasma, a vertical force of 1.79 10-2 N greater than the weight of the ring is required. Calculate the surface tension of blood plasma from this information. Answer in N/m
November 11, 2012

PHYSICS!!!
A certain fluid has a density of 1045 kg/m3 and is observed to rise to a height of 2.4 cm in a 1.0-mm-diameter tube. The contact angle between the wall and the fluid is zero. Calculate the surface tension of the fluid. Answer in N/m
November 11, 2012

PHYSICS!!!
A straight horizontal pipe with a diameter of 1.0 cm and a length of 46 m carries oil with a coefficient of viscosity of 0.11 N · s/m2. At the output of the pipe, the flow rate is 8.4 10-5 m3/s and the pressure is 1.0 atmosphere. Find the gauge pressure at the pipe ...
November 11, 2012

PHYSICS!!!
A thin 1.8-mm coating of glycerine has been placed between two microscope slides of width 1.0 cm and length 4.0 cm. Find the force required to pull one of the microscope slides at a constant speed of 0.35 m/s relative to the other slide. Answer in N
November 11, 2012

PHYSICS!!!
A thin 1.8-mm coating of glycerine has been placed between two microscope slides of width 1.0 cm and length 4.0 cm. Find the force required to pull one of the microscope slides at a constant speed of 0.35 m/s relative to the other slide. Answer in N
November 11, 2012

PHYSICS!!!
A pipe carrying 20°C water has a diameter of 3.6 cm. Estimate the maximum flow speed if the flow must be streamline. Answer in cm/s
November 11, 2012

PHYSICS!!!
Sucrose is allowed to diffuse along a 8.0-cm length of tubing filled with water. The tube is 6.1 cm2 in cross-sectional area. The diffusion coefficient is equal to 5.0 10-10 m2/s, and 8.0 10-14 kg is transported along the tube in 18 s. What is the difference in the ...
November 11, 2012

PHYSICS!!!
Glycerine in water diffuses along a horizontal column that has a cross-sectional area of 2.0 cm2. The concentration gradient is 3.1 10-2 kg/m4, and the diffusion rate is found to be 5.4 10-15 kg/s. Determine the diffusion coefficient. Answer in m2/s
November 11, 2012

physics!!!
The viscous force on an oil drop is measured to be 6.0 10-13 N when the drop is falling through air with a speed of 9.0 10-4 m/s. If the radius of the drop is 2.5 10-6 m, what is the viscosity of air? Answer in N x s/m^2
November 11, 2012

Chemistry
The combustion of how many moles of ethane would be required to heat 838 grams of water from 25.0 to 93.0 degrees C? Assume liquid water is formed during the combustion.
November 2, 2012

  1. Pages:
  2. <<Prev
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. 8
  11. Next>>

Members