What is the mass of hydrogen produced when 8.0 g of sodium reacts with an excess of water to produce hydrogen and sodium hydroxide?

If oil spills continue, all of the following should be expected except (2 points) death of aquatic life. polluted groundwater. decreased soil productivity. increased global temperatures.

The rate constant for the reaction below is 6.2 x 10−5 mol l−1 s −1. if the initial concentration of a is 0.0500 m, what is its concentration after 115 s?

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse