(a) 20cm of a gaseous hydrocarbon M required 150cm of oxygen for complete
combustion. M reacts with one mole of hydrogen gas in the presence of nickel
catalyst to give the hydrocarbon N.
(1) What is the molecular formula of hydrocarbonM
Write the reaction of the hydrocarbon M with hydrogen
Write all isomers of the hydrocarbon N and their IUPAC names
(iv) Giving reason, arrange these isomers in order of increasing boiling point.​

Which describes interactions between substances and stomata during photosynthesis? check all that apply. oxygen enters stomata. oxygen is released through stomata. carbon dioxide enters stomata. carbon dioxide is released through stomata. hydrogen enters stomata. hydrogen is released through stomata.

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)