determine the L CALCULATIONS- FINAL EXAM 36. Which of the following is a metric

Question

determine the L CALCULATIONS- FINAL EXAM 36. Which of the following is a metric unit? (A)miles (B) kilometers (C) feet (D) yards xide. for 37. Matter is anything that has a mass and volume 12 (A)True (B) False s, of 38. What is the coefficient for Oz when the following chemical equation is balanced? 6.4 amu .1 amu (A) 42 (B) 21 (C) 7 (D) 11 d to 39. In the balanced equation, how many of grams of ammonia, NHs, can be produced from 10.0 g of H2? N2 + 3H2 2NH3 (B) 48.6 g (D) 90.0 g (A) 28.4 g 1(C) 56.3 g 40. How many milliliters of 0.200 M KCI can be made with 10.25 g of potassium chloride? (A) 441 mL (C) 27.5 mL (B) 3.82 x 106 mL (D) 687 mL

Explanation / Answer

36.The metric system uses units such as meter, liter, and gram to measure length, liquid volume, and mass.In addition to the difference in the basic units, the metric system is based on 10s, and different measures for length include kilometer, meter, decimeter, centimeter, and millimeter. Notice that the word “meter” is part of all of these units.

So option B is correct.

37.According to classical physics, matter is any substance that has mass and takes up space by having volume.

So it is true.

38. Balanced chemical equation is

2 C7H14 + 21 O2 = 14 CO2 + 14 H2O

So option B.21 is correct

39.Balanced chemical equation is

N2 + 3 H2 = 2 NH3

6 grams of H2 produces 34 grams of Ammonia, so 10 grams of H2 will produce (34/6)*10=56.6666667

So option C is corrrect.

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