Determine the mass of CO2 and the mass of H2O produced by the combustion of 1.27 g of a compound with the empirical formula CH4O. What is the mass of CO2?

What is the mass of H2O?

How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles

__can be defined as which velocity changes

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here