What is the relative % abundance of isotope Q-2 for element Q if the atoms for each isotope are as follows: Q-1 5; Q-2 10; Q-3 5

How many atoms are there in 5.70 mol of mg

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.