AM LOOKING FOR A CHEMISTRY TUTOR. CAN ANYONE HELP? GRADE 11 IGCSE
PLZZZ HELP MY EXAM IS IN 3 MONTHS
(ELECTROLYSIS AND ORGANIC CHEMISTRY)
EXTENDED SYLLBUS

How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6