In the following reaction, how many liters of oxygen will react with 124.5 liters of propane (c3h8), at stp?
c3h8 + 5o2 d 3co2 + 4h2o
a) 24.9 liters
b) 622.5 liters
c) 373.5 liters
d) 41.5 liters

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion