What is the freezing point of a solution that contains {g} g of glycerin (molar mass= 92.09 g/mol) in 100. g of H2O?  Kf for water is 1.86°C/m.  Enter only the numerical part of your answer in °C, not the units.

Determine the mass of water in kg if [a] ×104 calories are absorbed to increase the temperature of water from [b]°C to [c]°C. Use q = m × SH × ΔT, SH of water = 4.184 J/(g•°C) and 1 J = 0.239 cal). Make sure to report your final answer with 3 SFs.__________ kg.You must include your math work (scanned copy of scratch papers) for credit. 

Heat of fusion of water is 333 J/g. How many pounds (lb) of ice were melted if [a] kJ of energy was absorbed during the melting process? (Hint: Check units!)

A piece of paper has the area of [a] × 10–3 m2. This area is equivalent to __________squared inches (in2)? (1 in = 2.54 cm)__________ in2. Enter the final answer with 3 SFs. Do not enter units.

How many significant figures (sig. figs.) are in the following measurements? (A) 2.5000 km = [BLANK-1] sig. figs. (B) 0.0020 s = [BLANK-2] sig. figs. (C) 5200 mi = [BLANK-3] sig. figs. (D) 2002 L = [BLANK-4] sig. figs. (E) 0.05 g = [BLANK-5] sig. figs.

Describe the clinical features and location as seen in this photo. Identify the disease or condition. Include the cause and any other related symptoms or features as applicable. Lastly, as a hygienist: describe your conversation with this patient regarding their condition. 

Hiram Bingham III, a historian-explorer who rediscovered Machu Picchu, and Leonardo Da Vinci, one of the greatest Renaissance exponents, have something in common. Choose the sentence that best describes this commonality. 

Concrete is a building material made from volcanic and organic materials. Dating as far back as the 8th century B.C., it was commonly used by ancient cultures such as the Sumerians and in arid lands. 

What were the major technological advancements that contributed to building Gothic cathedrals in France during the Medieval period?  Choose all that apply.

                                The square gaps at the top of castles for firing arrows and protecting the archers behind are called______