Identify the following combinations of atoms as ionic or covalent

A+b→2c when the reaction begins, the researcher records that the rate of reaction is such that 1 mole of a is consumed per minute. after making changes to the reaction, the researcher notes that 2 moles of a are consumed per minute. what change could the researcher have made to effect this change?

How do scientists think that gravity affected the formation of our solar system?

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.