From the reaction: B2H6 + O2 HBO2 + H2O What mass of O2 will be needed to burn 22.4 g of B2H6?​

Main expenses you plan on making payments on a new car too. you want to spend 15% of your monthly net pay on the car payment, insurance, registration, and taxes combined. what is your monthly car allowance? $149.46 $298.91 $448.37 $597.83

What is the molar mass of a gas that has density of 2.054 g/l

Use the half-reactions of the reaction au(oh)3 + hi -> au +i2 +h2o to answer the questions