Question 1 of 5 Share Facebook Twitter LinkedIn WhatsApp Email Copy Link Placing solid ammonium nitrate, NH4NO3, in a container of water causes an endothermic reaction. The result is ammonium hydroxide, NH4OH, and nitric acid, HNO3. Which diagram shows the correct equation for the reaction? A. NH4OH + HNO3 → NH4NO3 + H2O + energy B. NH4NO3 + H2O + energy → NH4OH + HNO3 C. NH4NO3 + H2O → NH4OH + HNO3 + energy D. NH4OH + HNO3 + energy → NH4NO3 + H2O Submit Answer
Question 2 of 5 Share Facebook Twitter LinkedIn WhatsApp Email Copy Link Maria places a rock in a graduated cylinder containing some water as a step in calculating the density of the rock, as shown below. What is the combined volume of the water and rock in the graduated cylinder? A. 9 mL B. 26 mL C. 30 mL D. 15 mL Submit Answer
Question 3 of 5 Share Facebook Twitter LinkedIn WhatsApp Email Copy Link Limestone and marble are often used in buildings. Both types of rock contain calcium carbonate, which is sensitive to chemical weathering by acids. A scientist conducted an experiment to test the effect of acid strength on calcium carbonate... Which change would reduce the possibility of error in the experiment? A. performing the experiment with a different acid in the solution B. performing multiple trials for each solution pH C. using more of the acidic solution D. using a solution with a pH below 3.00 Submit Answer
Question 4 of 5 Share Facebook Twitter LinkedIn WhatsApp Email Copy Link The cladogram shows the relatedness of several organisms based on shared characteristics. Which characteristic separates catfish from frogs? A. Suborbital fenestra B. Amniotic egg C. Four limbs D. Bony skeleton Submit Answer
Question 5 of 5 Share Facebook Twitter LinkedIn WhatsApp Email Copy Link A scientist studying solubility increased the temperature of a constant volume of water and measured the amount of sugar that dissolved into solution... Which of the following describes the relationship between the independent and dependent variables? A. As the amount of dissolved sugar increased, the temperature of the water decreased. B. As the water temperature increased, the amount of dissolved sugar increased. C. As the amount of dissolved sugar increased, the amount of water remained constant. D. As the water temperature increased, the amount of water decreased. Submit Answer