What element has the lowest density of all elements?

The complete combustion of octane, a component of gasoline, is represented by the equation: 2 C8H18 (l) + 25 O2 (g) →16 CO2 (g) + 18 H2O (l) How many liters of CO2 (g), measured at 63.

What are five things gravity can do

Why does ice float after it crystallizes? Its mass is greater than water. Its density is greater than water. Its density is less than water. Air trapped in ice causes it to float.

If a substance has a low absorption, will its transmittance be high or low

Rank these systems in order of decreasing entropy:? 1 mol methane gas at 273K and 40L 1 mol helium gas at 273K and 40L 1 mol hydrogen gas at 273K and 40L 1 mol helium gas at 273K and 20L 1/2 mol helium gas at 273K and 20L 1/2 mol helium gas at 100K

If the [H+] of a solution is 1.0 x 10 to the power of - 2 mol/L the pH is: (pH = - log (H+] 1 12 -2 2 chemistry

Change 5.20 moles of c3h6o2to grams

What factors can make atoms unstable

Nitrogen (N), oxygen (O), chlorine (Cl), neon (Ne), and argon (Ar) are all elements that occur as a gas at room temperature (20°C). Using the periodic table, which pair of gases has the most similar properties?

what will be the new volume of a 250mL sample of gas at 300 k and 1 atm if heated to 350 k at 1 atm law use: