help!! fast pls. what is the second quantum number for one of the electrons in the 4P energy sub level of bromine

Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).

How many moles are equivalent to 55.5g of nano3

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants