What is the solute in brass alloy containing 75% copper and 25% zinc%?

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

If an atom has 12 protons and 13 neutrons

Can someone check my work 98 5.05 acids and bases for this assignment you will be comparing acids and bases. the chart below will you organize the information needed: acids bases chemical properties (2) deodorant detergent vinger dish soap physical properties (2) orange juice toilet cleaner drain cleaner window cleaner ph level acid ph goes from 0-4 bases ph goes from 10-14 examples around you (2) vinger coffee lemon juice dark chocolate