how many moles of sodium are present in a sample of sodium having a mass of 137 g? (molar mass is 23.0g)

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?

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

Why are people not able to skip a dive to the deepest part of the ocean