Achemist determined by measurements that 0.015 moles of iron participated in a chemical reaction. calculate the mass of iron that participated in the chemical reaction. round your answer to 2 significant digits.

Pls! plant cells and animal cells were observed under a microscope. the characteristics of two cells are listed below. cell p: does not capture sunlight cell q: has cytoplasm but no chloroplast which statement about the two cells is correct? cell q also has a cell wall. cell q also has large vacuole. cell p also has a large vacuole. cell p also has a cell membrane.

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %