Which of the following statements about subatomic particles best characterizes protons?
positive charge, heavy, found in the nucleus of an atom
no charge, heavy, found in the nucleus of an atom
negative charge, light, circling the nucleus of an atom
no charge, light, circling the nucleus of an atom

To save time, you can approximate the initial mass of the solid to the nearest ±1 g. for example, if you are asked to add 14.3 g of copper, add between 13 g and 15 g. which of the following sets include two samples with an equal density? which all that apply below 15.4 g gold and 18.7 g silver 15.2 g copper and 50.0 g copper 20.2 g silver and 20.2 g copper 11.2 g gold and 14.9 g gold

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

Compare and contrast solutions and suspensions