Sam burned propane to heat 500.0 g of water that had an
initial temperature of 20.0°C.
The heat added from the
burning of the propane was
84.6 kJ. What is the final
temperature of the water?

How will the emission of an alpha particle affect the atomic number of an atom

Suppose a lab group reports a ppercent yield of sand of 105. is it really possible to collect more sand than was originally represented? what is the possible explanation for the extra product?

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?