Which sentence uses end punctuation marks incorrectly?

A You are not going to sit there and tell me you don't want to go to school today!

B Jonathan picked up the newspaper and saw with dismay that he was the cover story.

C Unlike other girls, Joanne had one desire for high school: to play varsity football.

D When will you finally get around to writing that story you've been telling the children.

What overall charge must all compounds have

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.

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?