24g of magnesium were burned in oxygen. the compound formed had mass of 40 g. explain why the mass has gone up

If the particles in a sample of matter have an orderly arrangement and move only in place, the sample is a

One of the few xenon compounds that form is cesium xenon heptafluoride (csxef7). how many moles of csxef7 can be produced from the reaction of 13.0 mol cesium fluoride with 12.5 mol xenon hexafluoride? csf(s) + xef6(s) csxef7(s)

Given that 1 mi = 1760 yd, determine what conver- sion factor is appropriate to convert 1849 yd to miles; to convert 2.781 mi to yards.