A 143.1 g sample of a compound contains 53.4 g of carbon, 16.9 g of hydrogen, 43 g of nitrogen, and some amount of oxygen. what is the mass percent of oxygen in the compound? 11.20% 11.81% 20.82% 30.05% 37.34%

In which medium would sound move the fastest

Average precipitation of arctic tundra

Aqueous lithium sulfate was mixed with aqueous strontium chlorate, and a crystallized strontium sulfate product was formed. What is the molecular equation for this?

Two pieces of silk have an electric charge after being rubbed on a piece of amber. What will happen when the two silk pieces are brought close together? A. They will repel one another. B. They will attract one another. C.

CaSO4 + AlBr3 > CaBr2 + Al2 (SO4) 3 What will the coefficient of CaBr2 when the equation is balanced using the smallest possible whole number coefficient

Which is the balanced chemical equation for the reaction of nitrogen (n2) with oxygen (o2) to form no?

What cells are chicken eggs made from

What is the study of matter called? O A. Chemistry O B. Philosophy O O C. Biology D. Physics

Molality is a unit of concentration that measures the moles of solute per liter of solution. liter of solvent. kilogram of solution. kilogram of solvent.

What evidence do you have that the slope of the natural logarithm plot will be the same for all ions of the same charge, and not just for the ions you investigated?