How many atoms are in 0.230grams Pb

What is the molarity of 10.0 g of NaCl dissolved in water to make 100. mL?

According to kinetic molecular theory, which of the following statements are true about the behavior of gases? The particles of a gas are in constant, random motion. Gases consist of small particles that are separated from one another by empty space.

Question 5 A 8.00L tank at 0.6°C is filled with 8.79g of sulfur hexafluoride gas and 19.5g of carbon dioxide gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction of each gas.

The change in internal energy for the combustion of 1.0 mol of octane at a pressure of 1.0 atm is - 5084.1 kj. f the change in enthalpy is - 5074.3 kj, how much work is done during the combustion

Express BaO + O2-BaO2 as a chemical equation

Which of the following is an extensive physical property? viscosity color mass density

Are protons and neutrons the same size? Explain.

3) which is an example of a physical change? a) grinding pepper b) toasting bread c) lighting up a grill d) baking a cake

When a bond is formed, energy is _ the atoms

Describe 2 theories for yawning