Friday
April 18, 2014

Posts by roro


Total # Posts: 36

Chemistry
A volume of 5oo ml of potassium sodium tartrate solution S1 of c1=0.21mol/l is to prepared. Determine the mass of hydrated potassium sodium tartrate of formula KNaC4H4O6.4H2O needed for this preparation .(molar atomic masses : H=1;C=12;O=16;Na=23;K=39)

Chemistry
A volume of 5oo ml of potassium sodium tartrate solution S1 of c1=0.21mol/l is to prepared. Determine the mass of hydrated potassium sodium tartrate of formula KNaC4H4O6.4H2O needed for this preparation .(molar atomic masses : H=1;C=12;O=16;Na=23;K=39)

Chemistry
A volume of 5oo ml of potassium sodium tartrate solution S1 of c1=0.21mol/l is to prepared. Determine the mass of hydrated potassium sodium tartrate of formula KNaC4H4O6.4H2O needed for this preparation .(molar atomic masses : H=1;C=12;O=16;Na=23;K=39)

Chemistry
A volume of 5oo ml of potassium sodium tartrate solution S1 of c1=0.21mol/l is to prepared. Determine the mass of hydrated potassium sodium tartrate of formula KNaC4H4O6.4H2O needed for this preparation .(molar atomic masses : H=1;C=12;O=16;Na=23;K=39)

Physics
Please explicit the method for calculating the answers to b) and c).

Physics
How have you calculated the answer to b and c ???

Physics
Have you the formula? Please

Physics
Anonymous could you explain the formula? Please

Physics
fx(x)=rho_2*g*A for L/2 to L

Physics
Ok, thanks. No, I hav not solution for 1 and 2!

Physics
-0.71 mm is bad answer

physics
A 0.43 kg object connected to a light spring with a spring constant of 21.4 N/m oscillates on a frictionless horizontal surface. The spring is compressed 4.0 cm and released from rest. (a) Determine the maximum speed of the mass. (b) Determine the speed of the mass when the sp...

Physics
A 0.30 kg mass is attached to a spring with a spring constant 170 N/m so that the mass is allowed to move on a horizontal frictionless surface. The mass is released from rest when the spring is compressed 0.15 m. (a) Find the force on the mass. N (b) Find its acceleration at t...

physics
A object-spring system undergoes simple harmonic motion with an amplitude of A. Does the total energy change if the mass is doubled but the amplitude is not changed? Do the kinetic and potential energies depend on the mass? Explain. Thanks in advance

physic:(
answer plz

physic:(
Starting at = 0 , a horizontal net force 0.280 (-0.440 is applied to a box that has an initial momentum -2.90 4.10 .

physic:(
Two ice skaters, Daniel (mass 70.0 ) and Rebecca (mass 45.0 ), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, who is moving at 14.0 before she collides with him. After the collision, Rebecca has a velocity of magnitude 8.00 at an ang...

chemistry
how many milliliters (ml) of H2 gas will be produced at 1.0 atm and 25 Celsius all the MG reacts?

chemistry
He analizado antes de poder ver la solución para ver los pasos Gracias roro

chemistry
Consider the following reaction Al(OH)3 + 3HCL ____>ALCL3 How many milliltres of 0.8 M HCL will react with 2g of AL(OH)3 ??

child care
Mrs. Carroll and her sister want to keep their taxes low and keep Ms. Howard's liability to the amount of her original investment. Which type of business arrangement would be best for them

physics
Multiply by gravity and take the square root

chemistry
i have a question of why did you put 2 after the parentheses Ca(CO3)2 isn't Ca has the charge number of 2+ and the CO3 has the charge of negative 2

Geometry
I am a triangle. My perimeter is 96 centimeters. Two sides are 34 centimeters and 25 centimeters and 25 centimeters. How long is my third side?

Geometry
I am a triangle. My perimeter is 96 centimeters. Two sides are 34 centimeters and 25 centimeters . How long is my third side?

Geometry
I am a triangle. My perimeter is 96 centimeters. Two sides are 34 centimeters and 25 . How long is my third side?

math-2
Darin counted 46 more cars than trucks in a parking lot. There were 29 trucks. Write an expression that shows how many cars were in the parking lot.

Math
A bike shop has 8 red, 5 blue, 12 black, and 9 white bikes. Write an expression that shows how many more black bikes than red bikes there are.

Gil
A bike shop has 8 red, 5 blue, 12 black, and 9 white bikes. Write an expression that shows how many more black bikes than red bikes there are.

Chemistry
the answer is actually B and A

algebra
2*12s + 2*20c + (2s + 10c) 24s + 40c + 2s + 10c 26s + 12c

Algebra
y= x^2 -x - 9 y=(x^2 -x + 0.5^2 - 0.5^2) -9 ; we get 0.5 by dividing 1 by 2) y=(x^2 -x + 0.25) - 0.25 -9 y=(x-0.5)^2 - 9.25

Algebra
when you used the calculator to find (-8)/(2)(2) you did not consider the order of operations you must multiply 2 by 2 before you divide -8 by the answer, otherwise your method is correct

Quadratic equations- word problem
x*y = 24 y = x - 5 so the equation becomes: x*(x - 5) = 24 expand: x^2 - 5x - 24 - 0 Factor by sum and product method: (x - 8)(x + 3) = 0 so x = 8 or x = -3 since the integers are positive, the solution is x = 8, and y = x - 5, so y = 8 - 5, y = 3 the two integers are 3 and 8

English
inquietude

English
Hi! I'm new here, but I have a quick question. I have been trying to learn how to use words figuratively. My professor gave us a list of words and we had to define them literally, figuratively and contextually. I have the literal and contextual down pat, but when it comes ...

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