21. How much heat energy was transferred when 20 15°C to 45°C? grams of water was heated from (note: q-Mico x Cp x AT) a

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21 How Much Heat Energy Was Transferred When 20 15 C To 45 C Grams Of Water Was Heated From Note Q Mico X Cp X At A 1 (36.99 KiB) Viewed 17 times

21. How much heat energy was transferred when 20 15°C to 45°C? grams of water was heated from (note: q-Mico x Cp x AT) a. 1255.23 b. 1860.2 J C. 2510J d. 3270 J 22. An ion that has a positive charge is called a/an a. cation b. anion c. radical d. spectator ion 23. The percentage of a gas is 0.025%. What is the concentration in parts per million? a. 2.5 ppm b. 250 ppm d. 25 ppm c. 0.25 ppm 24. Which of the following compounds is associated with or causes "Blue Baby Syndrome? d. a. sulfates b. nitrates c. carbonates phosphates 25. Elements of group 2A are called? a. halogens b. noble gases d. alkaline earth metals 26. How many grams of carbon dioxide are found in 0.2 moles of carbon dioxide? a. 0.88 g b.8.8g c. 88g d. 0.087g 27. What is the concentration (M) if 9 grams of hydrochloric acid is dissolved in 100mL of water? a. 2.5M b. 3.0M c.0.5M d. 5.0M 28. How much salt (in grams) will be produced when 20 grams of sulfuric acid reacts with excess of barium hydroxide? a. 47.55 g b. 57.55g 62.55g d. 45.77g 29. If the solution turns litmus paper red, it is? a. neutral pH b. alkaline pH d. water c. acidic pH 30. Which of the following is equal to a concentration of 0.000325% a. 3.25mg/L b. 325 mg/L c. 32.5 ug/L d. 325ug/L. 31. Which of the following layer has the standard temperature lapse rate? a. troposphere b. mesosphere c. stratosphere d. thermosphere c. alkali metals C