Recent content by chemgirl

well boyle's law states that under conditions of constant temperature and quantity, there is an inverse relationship between the volume and pressure for an ideal gas. but I am not sure how to explain that in like a question format?

Cant stand the heat? This is my experiment i had to do! In this lab you will investigate the properties of gases as they relate to temperature and pressure. Materials one empty soda can tongs water one 2- to 3- quart saucepan Caution: This lab involves heat and the can will be very...

i don't understand #5. anyone want to helP??

i don't get this experiment...

for question # 1. what happens the the air pressure?

Problem #1 Aluminum oxide is formed from the reaction of metallic aluminum with oxygen gas. How many moles of Aluminum are needed to form 3.4 moles of Aluminum oxide? Hint: This is a simple ratio problem. Just use the molar ratio from the balanced equation. This was covered in 5.09. Mass is...

i have to do this problem... (its in green) Assignment Problem Balance the equation and calculate the enthalpy change for the following reaction: NH3(g) + O2(g) --> N2(g) + H2O(l) NH3(g)= -46.11 kj/mol O2(g) = 0 kJ/mol N2 = 0 kJ/mol H20= - 285.830 kJ/mol and i don't...

does anyone know how to do enthalpys?? here is the problem i have to do... (its in red) Assignment Problem Balance the equation and calculate the enthalpy change for the following reaction: NH3(g) + O2(g) --> N2(g) + H2O(l) NH3(g)= -46.11 kj/mol O2(g) = 0 kJ/mol N2 = 0...

ohhhh i get it! i was thinking of it like backwards. thankks so muchh

Ba(OH)2... because the number infront of H3PO4 is 2...right??

the limiting one is H2SO4..right?

what are stoichiometric coefficients and why do i have to account for them as well?? im confused... :confused:

ohhhh! okayy i get it! so for this particular problem the one with the lower number of moles is the limting reagant??

okay i really need help with this... How many grams SO2 can be formed from 20.0 g of S and 160g O2? my equation is S + O --> SO2 and i change grams to moles or something like that?? someone pleaseee help me figure this out! I am so confused...