hardequalsmath
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Questions Answered

hardequalsmath:
Group Title
1. ch3ch3 + br2 > ch3ch2br + Hbr
2. ch3ch2br + HO^ > ch3ch2oh + Br^
for the organic substrates, is it being reduced, oxidized or …
 updated yesterday
 2 replies
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
NOCL decomposes to form nitric oxide and chlorine, all in the gaseous state. At a given temperature 0.150 moles of nitric oxide gas, .100 mo…
 updated 4 months ago
 3 replies
 No Medals Yet
Mathematics

Zale101fan:
Group Title
What is true about an offspring produced by selective breeding?
…
 updated 4 months ago
 3 replies
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
Determine the critical values: 2x^264sqrt(x)
 updated 4 months ago
 35 replies
 2 Medals
Mathematics

hardequalsmath:
Group Title
The concentration of hydronium ion in a solution is 2 x 10
4
M. What is the hydroxide ion
…
 updated 4 months ago
 9 replies
 4 Medals
Mathematics

hardequalsmath:
Group Title
Ammonia, NH3, is a weak base with a Kb value of 1.8×10−5. What is the pH of a 0.440M ammonia solution? What is the percent ionization of amm…
 updated 4 months ago
 5 replies
 3 Medals
Mathematics

hardequalsmath:
Group Title
Explain!!!!!
for a given reaction at 298k, the enthalpy of reaction is +35.5kj and the entropy of reaction +83.6J/mol*k. The reaction is sp…
 updated 5 months ago
 2 replies
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
find derivative:
y=(9x+4)^x
 updated 5 months ago
 23 replies
 No Medals Yet
Mathematics

loveya6638:
Group Title
Find the perimeter of the parallelogram shown.
…
 updated 5 months ago
 11 replies
 2 Medals
Mathematics

hardequalsmath:
Group Title
Hydrogen gas and bromine vapor react to form gaseous hydrogen bromide at 1300 K. The value of the equilibrium constant is 1.6 x 105. What is…
 updated 5 months ago
 7 replies
 2 Medals
Mathematics

hardequalsmath:
Group Title
Carbon disulfide and chlorine react according to the following equation:
…
 updated 5 months ago
 8 replies
 1 Medal
Mathematics

hardequalsmath:
Group Title
differentiate:
y=ln(e^x+xe^x)
 updated 6 months ago
 20 replies
 1 Medal
Mathematics

hardequalsmath:
Group Title
differentiate:
1/lnx
this one has me stuck!!
 updated 6 months ago
 14 replies
 2 Medals
Mathematics

hardequalsmath:
Group Title
differentiate:
…
 updated 6 months ago
 4 replies
 1 Medal
Mathematics

hardequalsmath:
Group Title
find all points ob the curve x^2y^2+xy=2
where the slope of the tangent line is 1. Ok so i know you find y prime first, but then what? Tha…
 updated 6 months ago
 41 replies
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
differentiate:
y=arctan(sqrt:(1x/1+x))
 updated 6 months ago
 40 replies
 1 Medal
Mathematics

hardequalsmath:
Group Title
HELP with Arrhenius eq.
http://www.youtube.com/watch?v=G7g0Wa4oFsk
…
 updated 6 months ago
 3 replies
 1 Medal
Mathematics

hardequalsmath:
Group Title
A certain firstorder reaction has a rate constant of 2.80×10−2s−1 at 15∘C. What is the value of k at 62∘C if Ea = 112kJ/mol ?
 updated 6 months ago
 21 replies
 1 Medal
Mathematics

hardequalsmath:
Group Title
find the limit of:
Limit(x>0) : (cosx1)/sinx
All i know is you start by performing the quotient rule, but now im stuck! thanks in advanc…
 updated 6 months ago
 10 replies
 1 Medal
Mathematics

hardequalsmath:
Group Title
What is the rate constant of a firstorder reaction that takes 5.50 minutes for the reactant concentration to drop to half of its initial v…
 updated 6 months ago
 4 replies
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
find f '(x) of 1/square root of t. give the definition of the derivitative. f '(x)=(f(x+a)f(x))/(h) I know you find denominator, then conju…
 updated 6 months ago
 2 replies
 2 Medals
Mathematics

hardequalsmath:
Group Title
factor: x^33x2
 updated 7 months ago
 5 replies
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
factor: 3x^24x+4
…
 updated 7 months ago
 6 replies
 2 Medals
Mathematics

hardequalsmath:
Group Title
Ammonia will burn in oxygen and form nitric oxide (NO) and water vapor according to the following equation:
4 NH3 (g) + 5 O2 (g) → 4 NO(…
 updated 9 months ago
 4 replies
 1 Medal
Mathematics

rbeckford134:
Group Title
Is this a function?
Solve.
…
 updated 11 months ago
 3 replies
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
i need help with sig figs! what would 0.525702 be in 3 sig figs? my answer was wrong: 7.02e^4
 updated 11 months ago
 2 replies
 1 Medal
Mathematics

austinharding:
Group Title
Find the slope of the line by counting the change in y and the change in x. (Remember, slope is rise over run).
(negative 3, 2), an…
 updated 11 months ago
 4 replies
 No Medals Yet
Mathematics

WeNeedDaAnswas:
Group Title
Can someone please help? Pleeeease! :)
Juliana has created the function f(x) = 3x + 2 over 4 to represent the cost of texting on her curr…
 updated 11 months ago
 4 replies
 1 Medal
Mathematics

huliebby:
Group Title
Choose the equivalent system of linear equations that will produce the same solution as the one given below.
6x + 2y = 6
…
 updated 11 months ago
 6 replies
 1 Medal
Mathematics

hardequalsmath:
Group Title
The density of platinum is 21.45 g/cm3 at 20 ∘C. Calculate the mass of 72.00cm3 of platinum at this temperature. PLEASE EXPLAIN! Thanks:)
 updated 11 months ago
 2 replies
 No Medals Yet
Mathematics
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