Quick true or false question .

the equation, 2 h2(g) + o2(g) arrow 2 h2o(l), represents an equation for a standard formation reaction.

true false

If the same amount of cacl2 is added to equal volumes of water and maple syrup, which will have the higher temperature?

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Match the name of the following compound:   mgso4  · h2omagnesium sulfate monohydratemagnesium (ii) sulfate monohydratemagnesium (ii) sulfate hydratemagnesium sulfate hydrate