Wednesday
July 23, 2014

Posts by RC


Total # Posts: 32

neuroscience
-25 80 63

chemistry
The ionic strength of an aqueous solution containing 0.24 M CH3COOAg and 0.050 M NH4Cl is:

Chemistry
Calculate the permanganate activity in an aqueous 0.18 M KMnO4 solution.

chem
If a 30.00mL aliquot of a 0.15 M NH4Cl solution is added to 20.00mL of a 0.18 M NH4NO3 solution, what is the concentration of nitrate ion in the mixture?

Chemistry
A sodium selective electrode indicates a 34.2 mV response to a 2.50 x 10-4 M Na+ standard solution. Assuming ideal electrode response, what is the sodium concentration of a sample when the electrode indicates a 35.2 mV response?

Analytical chemistry
A water sample was analysed using a sodium selective electrode. The electrode response was 75.0 mV. A 10.00 mL aliquot of standard 0.50 mmol/L NaCl solution was added to 10.00 mL of water sample. The well-mixed solution gave a response of 98.0 mV. What is the concentration of ...

chemistry
What is the molarity of the acetic acid if 0.5ml of a vinegar solution has been titrated with the 0.101M solution of NaOH and the volume of the NaOH solution at the equivalence point is 5.0mL?

Public Speaking
I agree with Ms. Sue

Information Systems in Organizations
Sky's answers are correct

physics
At a fabrication plant, a hot metal forging has a mass of 66.8 kg and a specific heat capacity of 437 J/(kg C°). To harden it, the forging is quenched by immersion in 785 kg of oil that has a temperature of 25.0 °C and a specific heat capacity of 2770 J/(kg C°). Th...

physics
A room has a volume of 164 m3. An air-conditioning system is to replace the air in this room every 26.8 minutes, using ducts that have a square cross section. Assuming that air can be treated as an incompressible fluid, find the length of a side of the square if the air speed ...

physics
A 53-kg skier is going down a 30 ° slope. The area of each ski in contact with the snow is 0.12 m2. Determine the pressure that each ski exerts on the snow.

physics
A ball is thrown vertically upward with a speed of 27.9 m/s from a height of 1.9 m. How long does it take to reach its high- est point? The acceleration of gravity is 9.81 m/s2. Answer in units of s

MATH 2
WHAT IS 2X+8=X+7

college
HCL+NaOH=CH3OOH+NaOH

college
HCL+NaOH=Ch3OOH+NaOH

chem
Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.2L of water upon warming from 25C to 50C . Assume that the water is initially saturated with nitrogen and oxygen gas at 25C and a total pre...

AP Calculus
An Initial amount of 100 grams of Thorium-234 decays according to the model: dP/dt=-0.02828P (where t is measured in years). a) Find the equation for the amount of Thorium left after t years. b) Determine the half-life of this radioactive isotope c) How long will it take for t...

AP Calculus
Use implicit differentiation to find the derivative for: arctan(xy)=1+x

French
I know that the definite article is normally used when discussing parts of the body, but I have oftentimes seen possessive adjectives with parts of the body while reading. Why is this? Is it just done for clarification? Thanks!

French
Is it more common to use the expression "poser des questions à qn" vs "demander des questions à qn?" or is the latter even used? Thanks!

French
"Charles est un grand homme" means "Charles is a great man," whereas "Charles est un homme grand" means "Charles is a tall man," correct? Merci beaucoup!

French
Is "ce que les profs ne vous disent pas" a correct translation of "what the profs don't tell you?" Merci beaucoup!

FRENCH
Yes, but you need to use the subjunctive, so it would be "il faut que j'aille avec ma mère."

FRENCH
can you tell me if this question and answer are correct: 1. Est-ce qu'il te faut un stylo? Ans: Oui, il m'en faut un

French
Is the answer to this question correct: 1. Est-ce qu'il te faut un stylo? Ans: Oui, il me faut un.

quick french question
In the sentence "ou prenez vous des cours de maths?" can I replace "des cours de maths" with "en?"

French
if I want to say "with some other people" in French, is it supposed to be "avec des autres gens" or "avec d'autres gens?" Merci

French
Can someone please check to make sure this is correct: Chère Famille Rosseau, Merci pour m'inviter rester chez vous! (should translate to "thank you for inviting me to stay at your house.") Merci beaucoup!

Math confused
I am trying to help a friend and I understand the first part but I am really confused about what to do next!! This is what I have so far 10,000 x $0.69 = 6900 2,000 x $1.09 = 2180 4,000 x $0.99 = 3960 1,000 x $1.19 = 1190 2,000 x $1.09 = 2180 10,000 2,000 4,000 1,000 2,000 = 1...

French
Can anyone proofread this paragraph and tell me if it is grammatically correct? Beaucoup de temps sont passés depuis la dernière fois que je t’ai vue! J’espère que tu vas bien. Aussi, veux-tu venir chez moi pour le révellion? Après ...

economics
whats law of demand define satisfaction law of demand Definition If supply is held constant, an increase in demand leads to an increased market price, while a decrease in demand leads to a decreased market price. Source: http://www.investorwords.com/2734/law_of_demand.html

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