There are two stable isotopes of bromine. Their masses are 78.9183 and 80.9163 amu. If the average atomic mass of bromine is 79.9091 amu, what is the natural abundance of the heavier isotope? percent abundance of 81Br __%

Qué método utilizaría para separar los componentes de una mezcla de: limaduras de hierro, azufre en polvo y piedras?

Based upon the information provided in the class, which of the following bond types is the strongest? Question options: A) hydrogen bond B) Ion - Dipole C) Dipole - Dipole D) Ion - Induced Dipole E) Dipole - Induced Dipole

Does water ever change into a different substance in the water cycle?

Which substance can be broken down by a chemical change? antimony, carbon, water or sulfur

Which pure substance can be classified as a element

When balancing an equation, should you adjust the subscripts or the coefficients?

How does the sun warm the earth

What controls the amount of light that enters the eye?

The universe contains billions of galaxies, each containing billions of stars. True or false

How is measuring the volume of liquids different than measuring the volume of regular-shaped solids?