In a solution with a volume of 0.5 dm^3 are dissolved 56 g of KOH. Calculate the molar concentration of the solution. M(KOH) = 56 g/mol. a) 0.02 mol/L
b) 0.2 mol/L
c) 2 mol/L
d) 20 mol/L

Please also provide a explanation

Determine the empirical formula of a compound containing 40.6 grams of carbon, 5.1 grams of hydrogen, and 54.2 grams of oxygen. in an experiment, the molar mass of the compound was determined to be 118.084 g/mol. what is the molecular formula of the compound? for both questions, show your work or explain how you determined the formulas by giving specific values used in calculations.

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?