At a certain temperature the rate of this reaction is second order in nh4oh with a rate constant of 34.1 m^-1*s^-1:
nh4oh(aq) > nh3(aq) + h2o (aq)
suppose a vessel contains nh4oh at a concentration of 0.100m. calculate how long it takes for the concentration of nh4oh to decrease to 0.0240 m. you may assume no other reaction is important. round your answer to 2 significant digits.

During metamorphic processes, increased pressure and temperature can affect the of minerals in rock. rocks subjected to very high pressure are typically than others because mineral grains are squeezed together, and the atoms are more closely packed. during metamorphic processes, water facilitates the transfer of ions between and within minerals, which can the rate at which metamorphic reactions take place. the growth of new minerals within a rock during metamorphism has been estimated to be about per million years. metamorphism is commonly associated with convergent plate boundaries, where two plates move toward each other. during contact metamorphism, a large intrusion will contain thermal energy and will cool much more slowly than a small one. metamorphosed sandstone is known as the metamorphic rock made from metamorphosed shale, was once used to make blackboards for classrooms.

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?