Explain reasons why

helium is used to fill balloon instead of hydrogen having a lighter weight

Will chlorine gas effuse more quickly than ammonia gas

What mass of water is produced from the complete combustion of 5.00*10-3 g g of methane?

The change in the standard Gibbs free energy (ΔGº) for the dissociation of nitrous acid (HNO2) at 298 K is 19.09 kJ. If the pH of the solution after equilibrium is reached is 1.30 and the NO2 - concentration at equilibrium is 0.00060 M.

Alkanes are saturated organic molecules that contain only carbon and hydrogen atoms connected through single bonds.

How many Oxygen (O) atoms are in the following? H2O + CO2 3 2 4

How many moles of CO will be produced, if 32.5grams of H2O are produced? C6H6S+6O2=>6CO+3H2O+SO3

Identify and briefly describe two ecosystems in your community that are beyond schoolyard

Is N2H2 a ionic compound?

What do Lewis dot structures show?

300 grams of a compound which contains only carbon, hydrogen and oxygen is analyzed and found to contain the exact same percentage of carbon as it has oxygen. The percentage of hydrogen is known to be 5.98823%.