3.94 g of magnesium metal was used to produce hydrogen gas. Write the balanced chemical equation for this reaction. How many moles of hydrogen gas would be produced by the complete reaction of the
magnesium?

Naoki's bicycle has a mass of 10 kg. if naoki sits on her bicycle and starts pedaling with a force of 168 n, causing an acceleration of 2.8 m/s2, what is naoki's mass?

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

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6