Questions Asked

znimon:
Group Title
10,000 kg of a saturated solution of Na2CO3 at 30ºC is available. You want to crystallize from this solution 3,000 kg of Na2CO3∙10H2O witho…
 updated 6 days ago
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znimon:
Group Title
Find the volume of the solid below the paraboloid
z=4(x^2)(y^2)
…
 updated 16 days ago
 1 reply
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znimon:
Group Title
Rectangular boxes with a volume of 10m^3 are made of two materials. The materials for the top and bottom of the box costs $10/m^2 and the ma…
 updated one month ago
 2 replies
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znimon:
Group Title
I took two samples from the same site. One sample contained 12 rocks of type A out of 49 total rocks. The other sample contained 22 rock of …
 updated 5 months ago
 6 replies
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znimon:
Group Title
(4e^x)/(e^2x+4e^x+4) integral
 updated 8 months ago
 5 replies
 1 Medal

znimon:
Group Title
What is the concentration of free cobalt ion in a solution that is 4.75 ×10^–2 M Co2+ and 5.0 M NH3? Kf Co(NH3)6 2+= 8.3×10^4
…
 updated 11 months ago
 1 reply
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znimon:
Group Title
What is the molar solubility (mol/L) of Cr(OH)3 at pH=10.00 (not buffered)? Ksp for Cr(OH)3
is 3.0×10^–29 and Kf for Cr(OH)4– is 8×10^29.
 updated 11 months ago
 3 replies
 1 Medal

znimon:
Group Title
What is the molar solubility (mol/L) of Cr(OH)3 at pH=10.00 (not buffered)? Ksp for Cr(OH)3
is 3.0×10^–29 and Kf for Cr(OH)4– is 8×10^29.
 updated 11 months ago
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znimon:
Group Title
To what final concentration of NH3 must a solution be adjusted to just dissolve 0.060mol of NiC2O4 (Ksp = 4×10−10) in 1.0 L of solution? (Hi…
 updated 11 months ago
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znimon:
Group Title
Calculate the pH of a buffer that is 0.120M in NaHCO3 and 0.300M in Na2CO3.
 updated 11 months ago
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znimon:
Group Title
You are asked to prepare a pH=3.00 buffer solution starting from 1.25 L of a 1.00M solution of hydrofluoric acid (HF) and an excess of sodiu…
 updated 11 months ago
 3 replies
 1 Medal

znimon:
Group Title
A piston at the top of a cylindrical chamber with a radius of 5 cm when it starts moving into the chamber at a constant speed of 2 cm/s. Wha…
 updated 11 months ago
 3 replies
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znimon:
Group Title
The length of an isosceles triangle is increasing at a rate of 5 m/s. At what rate is the hypotenuse changing?
 updated one year ago
 27 replies
 1 Medal

znimon:
Group Title
The sides of a square are increasing at a rate of 5 m/s. the area of the square is changing at a rate of (blank) m/s^2 when the sides are 3…
 updated one year ago
 17 replies
 2 Medals

znimon:
Group Title
Can someone explain why the domain of arcsec(x) is (infinity,1]union[1,+infinity)?
 updated one year ago
 21 replies
 1 Medal

znimon:
Group Title
Why use the second derivative to find min/max points?
 updated one year ago
 3 replies
 1 Medal

znimon:
Group Title
Why is 0.56566566656666... irrational? It seems to have a repeating pattern.
 updated one year ago
 4 replies
 3 Medals

znimon:
Group Title
4 sin θ cos θ + 2 cos θ − 2 sin θ − 1 = 0
 updated one year ago
 12 replies
 4 Medals

znimon:
Group Title
Analysis of a gas indicated that 46.2 % of its mass was carbon and 53.8% of the mass was nitrogen.
 updated one year ago
 17 replies
 2 Medals

znimon:
Group Title
When comparing two gases to determine which one is closest to an ideal gas, which strategy is best?
 updated one year ago
 9 replies
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znimon:
Group Title
Establish the Identities (Trigonometry)
 updated one year ago
 8 replies
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znimon:
Group Title
Evaluate the expression without using a calculator.
…
 updated one year ago
 20 replies
 1 Medal

znimon:
Group Title
If f(x) = 8^x, show that (f(x+h)  f(x))/h = 8^x((8^h1)/h)
I am not sure of the properties at play here. I have the answer. If someone w…
 updated one year ago
 11 replies
 1 Medal

znimon:
Group Title
I want access old questions; is there anyway to save/archive or access old questions I have asked?
 updated one year ago
 6 replies
 1 Medal

znimon:
Group Title
This is a question about open study. Please feel free to redirect me if this is wrong place to ask this sort of question. I want access old …
 updated one year ago
 3 replies
 1 Medal

znimon:
Group Title
If I have x^5 81x and I want to find all the zeros here is how I go about that: x(x^481), x(x^43^4), x((x^2)^2(3^2)^2), x((x^23^2)(x^2+…
 updated one year ago
 13 replies
 1 Medal

znimon:
Group Title
Solve the nonlinear inequality. Express the solution in interval notation. x^4 is greater than x^2
 updated 2 years ago
 25 replies
 1 Medal

znimon:
Group Title
A function is given below. Determine the average rate of change of the function between x = 3 and x = 3 + h. f(t) = √7t
 updated 2 years ago
 39 replies
 1 Medal

znimon:
Group Title
How do I find the domain of this function?
 updated 2 years ago
 39 replies
 3 Medals

znimon:
Group Title
I don't understand what they want me to do or where to begin. Precalculus maybe a proof not sure
 updated 2 years ago
 68 replies
 3 Medals
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