Achemist prepares a solution of copper(ii) fluoride by measuring out of copper(ii) fluoride into a volumetric flask and filling the flask to the mark with water. calculate the concentration in of the chemist's copper(ii) fluoride solution. round your answer to significant digits. initial knowledge check answers

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

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.