How much energy is required to convert 14.0 g of ice at
−15
°C to 14.0 g of steam at 114°C?
Specific heat capacity, ice: 2.108 J/g·K (at 0°C)

Specific heat capacity, water: 4.1801 J/g·K (at 25°C)

Specific heat capacity, steam: 2.0784 J/g·K (at 100.°C)

ΔHfus = 333.6 J/g (at 0°C)

ΔHvap = 2.2567 kJ/g (at 100.°C)

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

For each of the following compounds, write the formula then predict whether it would be a strong, weak, or non-electrolyte when placed in di water. for the ionic compounds only, put (s) or (aq) after the forrmula formula strong, weak or non electrolyte? a calcium hydroxide b. silver carbonate c. lead(ii) sulfate d. phosphorus trifluoride e. sodium phosphide f barium sulfate g. strontium acetate h. zinc nitrate

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins