Arrange the following ions in order of decreasing charge density; 2+, 2+, 3+ 2+

Evaluate this exponential expression,8. (2 + 3)2 – 42

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

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?