Amixture consists of sand and an aqueous salt
solution. which procedure can be used to separate
the sand, salt, and water from each other?
(1) evaporate the water, then filter out the salt.
(2) evaporate the water, then filter out the sand.
(3) filter out the salt, then evaporate the water.
(4) filter out the sand, then evaporate the water.

7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation. 8. when a 2.5 mol of sugar (c12h22o11) are added to a certain amount of water the boiling point is raised by 1 celsius degree. if 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? show all calculations leading to your answer or use 3 – 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100⁰c, how much steam at 100⁰c is produced? show all calculations leading to an answer. 10. the freezing of water at 0⁰c can be represented as follows: h2o (l) ↔ h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 – 4 sentences explain why applying pressure causes ice to melt.

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?

If i add water to oil what will happen