How can you determine the number of subatomic particles in an atom please i have a quiz tomorrow and my teacher gave us nothing NO LINKS

Now consider the reaction when 45.0 g naoh have been added. what amount of naoh is this, and what amount of fecl3 can be consumed by it?

What metric units would you use to measure the thickness of a key

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.