Lee and celia are lab partners. while celia pours a chemical into a graduated cylinder, some of the chemical splashes onto her arm. what should they do next? a. lee should continue working with celia after wipe off her arm. b. lee should tell the teacher what happened to celia when he leaves the lab. c. lee should tell the teacher while celia washes her arm with soap and water. d. lee should have celia stand in the safety shower while another student tells the teacher.

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

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.

Reduction is a reaction which results in a in electrons and a in positive charge of the atom or ion 1) a- loss 1) b- gain 2) a-increase 2) b-decrease