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