In the reaction 2h2 + o2 → 2h2o, what coefficient should be placed in front of o2 to balance the reaction? a) 1 b) 2 c) 3 d) no coefficient is needed

Use the drop-down menus to answer each question. which runner finished the 100 m race in the least amount of time? which runner stopped running for a few seconds during the race? at what distance did anastasia overtake chloe in the race?

Identify two types of chemical bonding in the source of dietary potassium

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?