True or false, cilia and mucus help keep our lungs clean and healthy?
Plz answer! Will make brainest!

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.