In ancient Greece, it was proposed that matter is composed of Earth, air, water, and fire and that these elements have what?

Explain why hotter air rises in the atmosphere

Consider the following reaction: 2{/rm{ N}}_2 {/rm{O (}}g) /; / rightarrow /; 2{/rm{ N}}_2 (g) /; + /; {/rm{O}}_2 (g) a. In the first 12.0 s of the reaction, 1.7*10-2 mol of {/rm{O}}_2 is produced in a reaction vessel with a volume of 0.240 L.

At 1.75 atm, a sample of gas takes up 2.88L. If the pressure in the gas is increased to 2.25 atm, what will the new volume be

The round base of a copper tea kettle has a radius of 4 inches. What is the base's circumference? Use 3.14 for ?.

What will occur if solution A containing 400 mosmol/L nonpenetrating solute is separated by a biological membrane from solution B containing 600 mosmol/L nonpenetrating solute?

When electricity flows through a wire which of the following appears? Question 6 options: Gravitational Field Magnetic Field

Which of the following statements are correct about the chemical reaction? H2 + O2 - > H2O2 versus 2 H2 + O2 - > 2 H2O? They are both balanced chemical equations. The two reactions are equivalent. The laws of thermodynamics apply to both.

Explain how you would convert the moles of a compound to the made (grams) of the same compound

Which is the best definition of activation energy? O the energy required to end a chemical reaction O the energy required to bind a substrate to an active site O the energy required to form or break the bonds of reactant molecules O the energy

A chemist wants a 0.100 m solution of naoh. She has 0.0550 mol naoh available. What volume of solution is needed to make the mixture?