Allison

Can cops evade getting search warrants by claiming that they got an anonymous tip? I heard that they can't unless they can independently verify the claim, but what if they claim that the tip is urgent and opportunity would be lost by spending time to verify the veracity of the claim?

You want to make 2 bottles of 30% 1.5 L solutions from 65% 8-oz stock bottles. How many bottles do you need to open?

You have the following hypothetical decomposition:

A3BC2D4 ----> 3A + B + 2C + 4D

If you have 0.0010 moles of D, how much of A, B, and C do you have? It's been so long since I've taken chemistry...

I'm putting images in my paper for illustration purposes, and I got them from a website. However, the website got them from textbooks and science articles, and they list the source of where they got the images. So in my works cited section, which reference do I add? The website, or the textbook that the website got them from?

If a physician orders 25% dextrose 1000 mL and all you have is 70% dextrose 1000 mL, how much 70% dextrose and how much sterile water will be used?

I am ashamed that I cannot answer this question. -_-

Or the glass of milk back into the cupboard--or just leave it there and walk away when you put the milk back in the refrigerator--and not realize it until later?

Would it be "In the 1900's..." or "In the 1900s..."?

Would it be "I have a couple of MP3's..." or "I have a couple of MP3s..."

Would it be "There are 4 S's and 3 A's in 'Sassafras'" or "There are 4 Ss and 3 As in 'Sassafras'"?

It's always bugged me.

I just got accepted to a university, and I need to send them my official transcripts from the other colleges I have been going to. Is there a way I can get my transcripts without having to drive to all my old colleges (I went to several)?

A 10.0-mL solution of 0.050 M AgNO3 was titrated with 0.025 M NaBr in the cell:

S.C.E || titration solution | Ag(s)

SCE = standard calomel (Hg2Cl2) Electrode

Find the cell voltage for 0.1, 10.0, 20.0, and 30.0 mL of titrant.

I don't know how to set up the redox reaction for this one. Can anyone just set it up for me, and show me how? Thanks.

How many photons with a wavelength of 12.5 cm are required to heat up 600 mL water from 0 to 100 degrees C?

Nitroglycerin, C3H5(NO3)3(l), a powerful explosive used in mining, detonates to produce nitrogen, water, carbon dioxide, and oxygen.

a) Write a balanced equation for this reaction using the smallest whole-number coefficients.

Did just that:

4 C3H5(NO3)3 => 6 N2 + 12 CO2 + 10 H2O + O2

b) If dH0(rxn) = -2.29x10^4 kJ for the equation as written in part (a), calculate the dH0(f) of nitroglycerin.

A 505-g piece of copper tubing is heated 99.9 C and placed in an insulated vessel containing 59.8 g water at 24.8 C. Assuming no loss of water and that the vessel has a heat capacity of 10.0 J/K, what is the final temperature of the system? (c of copper = 0.387 J/gK).

Thank you for the help!

A manufacturer claims that its new dietetic dessert has "fewer than 10 calories per serving." To test the claim, a chemist at the Department of Consumer Affairs places one serving in a bomb calorimeter and burns it with O2. The temperature increases 4.937 C. Is the manufacturer's claim correct? Heat capacity of the calorimeter is 8.151 kJ/K.

What is the pH of a 0.08 nL solution of a 6.00 M HCl solution that has been diluted to 250 L? What % of the [H+] does water provide? Does HCl or water provide more [H+]?

I tried doing it the same way as deadfish did it:

0.08 nL = 0.08x10^-9 L (6.00 M HCl) = 4.8x10^-9 moles HCl / 250 L = 1.92x10^-11 M HCl

pH = -log(1.92x10^-11) = 10.72.

This doesn't look right... how can an HCl solution be basic?

What is the pH of a 0.08 nL solution of a 6.00 M HCl solution that has been diluted to 15 nL? What % of the [H+] does water provide? Does HCl or water provide more [H+]?

Help! I don't understand this! I know nL is nanoliters, but what is it talking about water for? Thanks for your guys' help!

Calculate the concentrations of Ag+ and CN- when silver cyanide (ksp=2.2x10^-12) is in water.

Ag2(CN)2 <=> 2Ag+ + 2CN-

ksp = [Ag+]^2[CN-]^2

2.2x10^-12=s^4

s = 0.00122

My internet homework won't accept it. What is wrong?

Hi everyone. It's my first time using Yahoo! Answers, and I heard that this is a great place to get some chemistry help from. So here I go!

What is the [Cu2+] of Cu(OH)2 (ksp = 4.8x10^-20)? What is its concentration when it is added to a basic solution with a pH of 10.10? Thank you all for your help!