What is the MOST likely reason the author included the story of her first two science projects? (A) to explain the early experiences that motivated her to become a climate scientist (B) to show that most scientists fail many times before they make any discoveries (C) to explain the influence of her teachers on her decision to study science (D) to show that becoming a successful scientist requires patience and curiosity --

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.

Uranium can supply energy for the worlds electricity without admitting harmful greenhouse gases which of these statements best describes an outcome of uranium mining

Place the following substances in order of ph from lowest ph to highest. a. neutral compounds, bases, acids b. acids, neutral compounds, bases c. bases, acids, neutral compounds d. bases, neutral compounds, acids