A 6.4 g sample of rocket fuel is found to contain 5.6 g of nitrogen and 0.80 g of hydrogen. The molecular molar mass of the compound is twice that of its empirical molar mass. Determine the empirical formula and the molecular formula of this compound. NH₅ & N₂H₁₀

NH₂ & N₂H₄

N₂H & N₄H₂

NH₇ & N₂H₁₄

None of these.

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

If maltose undergoes hydrolysis what subunits does it results to?