Express the value of exactly 15 centimeters to three significant figures.

Predict which atom has the higher ionization energy. A) Cl B) I will give brainliest

Hydrogen gas can be prepared by reacting metallic sodium with water: 2Na (s) + 2H2O (l) → H2 (g) + 2NaOH (aq). If the price of sodium were 165/kg, what would be the cost of producing 1.00 mol of hydrogen. Ignore the cost of the water.

Why does water expand when it freezes

Which process is a chemical change? 1. freezing of liquid water to solid ice 2. condensation of gaseous steam to liquid water 3. boiling of liquid water to gaseous steam 4. decomposing of water to hydrogen gas and oxygen gas

In the combustion of propanol, what is the molar ratio of propanol (ch3ch2ch2oh) to co2? combustion of propanol: 2ch3ch2ch2oh + 9o2 → 6co2 + 8h2o

State one major difference between having a nitrogen atom in a ring structure and having an oxygen atom in that structure

Can dowels be chopsticks, since both of them are wood?

Which electron configuration represents the electrons in an atom of Ga in an excited state?

Why are there so many volcanoes in and around japan

A liquid fuel mixture contains 30.35% hexane (c6h14), 15.85% heptane (c7h16), and the rest octane (c8h18). what maximum mass of carbon dioxide is produced