Ametallurgist has one alloy containing 21% aluminum and another containing 42% aluminum. how many pounds of each alloy must he use to make 41 pounds of a third alloy containing 38% aluminum?

Which statement accurately describes the relationship between air pressure, air density, or altitude? as altitude increases, pressure increases.as altitude increases, air density increases.air pressure and density are lowest at sea level.denser air exerts more pressure than less dense air.

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.