Give explanation for each please Directions: Read each statement and determine whether the two variables are positively correlated(P), negatively correlated (N), or contain zero/no correlation (Z). Explain why you chose the answer that you did.

1. It was found that people that smoke more marijuana have a harder time reciting the pledge of allegiance than people who do not smoke.

2. Carter found that the more he slept, the less time he had to do activities.

3. As more students entered the student center, it became increasingly messy and hard to walk through.

4. The more the butterfly flaps its wings in Thailand, the more homework Roberto does

5. Roberto bullied many people. His number of friends went down.

6. If Pavlov rang the bell often, his dogs salivated a great deal.

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.

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Which substance can be broken down by chemical means