Static electricity
a. is a stationary type of electricity
b. is created by moving a magnet through a wire coil
c. requires a closed loop
d. is created by moving an object through a magnetic field

Stoichiometry- i need with 14 and 15! an explanation would be appreciated!

Listed below are the amounts of mercury (in parts per million, or ppm) found in tuna sushi sampled at different stores. the sample mean is 0.836 ppm and the sample standard deviation is 0.253 ppm. use technology to construct a 90% confidence interval estimate of the mean amount of mercury in the population.

27. find the molar mass of nitric acid (hno 3).