a student calculated the percent by mass of water in a hydrate as 14.2%. a hydrate is a compound that contains water as part of its crystal structure. if the accepted value is 14.7%, the student's percent error was

Express the following number in scientific notation. 0.026890 =

Acontainer holds 35.8 moles of gas under 10.0 atm of pressure at 70.0 c. what is the volume of the container?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.