Questions Asked on February 7, 2013

At a concession stand, popcorn costs $1.10 and nachos cost $2.35. One day, the receipts for a total... Asked on February 7, 2013 at 12:00 AM Need help on the question below. Jeff studied data from the following categories: age, countries... Asked on February 7, 2013 at 12:02 AM Ammonium ion (NH4^+) reacts with nitrite ion (NO2^-) to yield nitrogen gas and liquid water. The f... Asked on February 7, 2013 at 12:04 AM Passing through point (1,4); perpendicular to 2x+y=5 How do I solve this? I think it might be thi... Asked on February 7, 2013 at 12:07 AM I agree with 0.0918 mols C and 0.137 mols H but not the formula. 0.137/0.0918 = about 1.5; is that... Asked on February 7, 2013 at 12:10 AM Assuming that the [Potato extract] is .001 M and I am going to make a 10 ml solution and each drop i... Asked on February 7, 2013 at 12:22 AM How do we determine whether a substance is pure in a chemical formula ? Asked on February 7, 2013 at 12:25 AM how will i know if the given formula is an element, compound or mixture? Asked on February 7, 2013 at 12:31 AM scientific notation for (5.5*10^-8)(8*10^-2) I got (5.5*8)(10^-8*10^-2) then 44*10^10 Wh... Asked on February 7, 2013 at 12:32 AM Alexandra decides to climb Mt. Krumpett, which is 5000 high. She determines that this will require a... Asked on February 7, 2013 at 12:34 AM