Which is the best example of a closed system

Sodium explodes when it contacts water. If I have a compound that contains sodium, will it explode if it is exposed to water? Question 2 options: A. Only if there is a larger amount of sodium than other elements. B.

Calculate the volume in liters of a potassium iodide solution that contains of potassium iodide. Be sure your answer has the correct number of significant digits.

In the balanced chemical reaction shown below, what is the molar ratio of Fe to Al? Fe2O3 (s) + 2Al (s) - -> 2Fe (5) + Al2O3 (5)

A material will float on the surface of a liquid if the material has a density less than that of the liquid. Given that the density of water is approximately 1.0 g/mL, will a block of material having a volume of 1.

How many carbon dioxide is formed from reaction 112.1 grams of oxygen gas with carbon monoxide?

Magnesium carbonate--->? + carbon dioxide

Determine the number of moles 28.8 g Br2

Which statement best explains why heating a liquid affects its viscosity?

In which type of unconformity is the eroded rock tilted or folded? disconformity nonconformities angular unconformity scarp unconformity

What's the difference between an iconic bond and a covalent bond? A. an iconic bond Is a bond between charged atoms, while a covalent bond is a bond between neutral atoms B.