The combustion of propane (C3H8) produces CO2 and H2O : C3H8 (g) + 5 O2 (g) = 3 CO2 (g) + 4 H2O (g)
How many moles of H2O be produced from the combustion of 5.5 moles of O2 ?
a. 2.1 mol
b. 4.4 mol
c. 5.5 mol
d. 8.6 mol

Alculate the concentration of h3o⁺in a solution that contains 5.5 × 10-5m oh⁻at 25°c. identify the solution as acidic, basic, or neutral.a) 1.8 × 10-10m, basicb) 1.8 × 10-10m, acidicc) 5.5 × 10-10m, neutrald) 9.2 × 10-1m, acidice) 9.2 × 10-1m, basic

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.