Kathy R

If a sample of a compound of carbon and oxygen contains 3.00g of carbon and 8.00g of oxygen, what is the mass percent of carbon in the compound? A. 27.3% B. 25.0% C. 37.5% D. 3.67% E. 2.67%

arrange the following compounds in the order of increasing polarity HF, H2SE, N2, H2s I believe that the answer is H2Se < H2S < N2 < HF Is that correct?

22. Choose the best description for a solid held together by London forces. A. This substance melts at -30 °C to give a liquid that does not conduct electricity. B. This substance melts at 650 °C and both the solid and liquid phases conduct electricity. C...

37.5 right

To this N2 < H2Se < H2S < HF