What mass of oxygen is consumed by the reaction of 3.4 moles
of hydrogen?

Which description best characterizes the motion of particles in a solid?

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent

One student said that the investigation was not valid (a fair test). write a plan for the investigation that includes improvements to the method and apparatus