Hi, I've been trying to figure these homework problems out but just can't seem to understand what i'm supose to do. Can anyone show me how to find the answers?
CH4 + 2O2 ---> CO2 + 2H2O
1 mole of CH4 reacts with ___ Moles of O2 to form ___ moles CO2 and ___ moles H2O
An unknown compound is found to contain 27.0g Ca, 21.6g O and 1.37g H. What is it's empirical formula?
H3PO4 + 3NaOH ---> 3H2O + Na3PO4
How many moles of Na3PO4 will be produced from 1.7 moles of NaOH in the presence of excess H3PO4?
2AgNO3 + CaBr2 ---> 2AgBr + Ca(NO3)2
A chemist wishes to obtain 59.5g AgBr from the above reaction. How many grams of AgNO3 and how many grams of CaBr2 should be reacted?
A chemist performs the following experiment:
2FeCl3 + 3CaCO3 ---> Fe2(CO3)3 + 3CaCl
If he starts with 105g FeCl3 and excess CaCO3 how many grams of CaCl2 will he obtain?
How many moles of CaCl2 is this? (the answer from #7)
A compound has an empirical formula of CHO2. It's molarmass is 90g 1 mole. What is the molecular formula of the compound?
any help would be appreciated, Thank you so much!