S I NEED SOME ONE TO HELP ME IN IGCSE CHEMISTRY , LIKE EXPLAIN STUFF FOR ME SO BASICALLY A TUTOR. IF U CAN HELP OR KNOW SOMEONE , PL HELP MY EXAMS ARE ON 3 MONTHS AND I KNOW NOTHING
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What happens when the temperature of a solution increases?

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?

What is the name of the enzyme that forms at the start of transcription?