Brian is planning to cycle 84 km to a hotel for an overnight stay. He cycles at a constant speed of 24 km/hour. How much time will it take him to get there?​

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?